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National Instruments 6508 PCI-DIO-96 User's Manual

1. 3 1 I O Connector Pin Descriptions 3 1 Port C Pin Assignments 3 5 Digital I O Signal Connections 3 6 Power Connections 3 8 Timing Specifications 3 8 Table of Contents PCI DIO 96 User Manual vi National Instruments Corporation Mode 1 Input Timing 3 10 Mode 1 Output Timing 3 11 Mode 2 Bidirectional Timing 3 12 Chapter 4 Theory of Operation Functional Overview 4 1 PCI Interface Circuitry 4 2 82C55A Programmable Peripheral Interface 4 3 82C53 Programmable Interval Timer 4 3 Interrupt Control Circuitry
2. 4 3 Chapter 5 Register Map and Description Introduction 5 1 Register Map 5 2 Register Descriptions 5 3 Register Description Format 5 3 Register Description for the 82C55A 5 3 Register Description for the 82C53 5 5 Register Description for the Interrupt Control Registers 5 6 Interrupt Control Register 1 5 7 Interrupt Control Register 2 5 9 Interrupt Clear Register 5 10 Chapter 6 Programming PCl Local Bus 6 1 Programming Examples 6 1 PCI
3. 1 1 What You Need to Get Started 1 2 Software Programming Choices 1 2 National Instruments Application Software 1 2 NI DAQ Driver Software 1 3 Register Level Programming 1 4 Optional Equipment 1 5 Custom Cabling 1 5 Unpacking 1 6 Chapter 2 Installation and Configuration Software Installation 2 1 Hardware Installation 2 1 Board Configuration 2 2 Chapter 3 Signal Connections I O Connector
4. Chapter 5 Register Map and Description National Instruments Corporation 5 5 PCI DIO 96 User Manual Table 5 2 shows the control words for setting or resetting each bit in port C Notice that bit 7 of the control word is cleared when programming the set reset option for the bits of port C Register Description for the 82C53 Figure 5 2 shows the control word format used to completely program the 82C53 Bits 7 and 6 of the control word select the counter to be programmed Bits 5 and 4 select the mode by which the count data is written to and read from the selected counter Bits 3 2 and 1 select the mode for the selected counter Bit 0 selects whether the counter counts in binary or BCD format Table 5 2 Port C Set Reset Control Words Bit Number Bit Set Control Word Bit Reset Control Word Bit Set or Reset in Port C 0 0xxx0001 0xxx0000 xxxxxxxb 1 0xxx0011 0xxx0010 xxxxxxbx 2 0xxx0101 0xxx0100 xxxxxbxx 3 0xxx0111 0xxx0110 xxxxbxxx 4 0xxx1001 0xxx1000 xxxbxxxx 5 0xxx1011 0xxx1010 xxbxxxxx 6 0xxx1101 0xxx1100 xbxxxxxx 7 0xxx1111 0xxx1110 bxxxxxxx Chapter 5 Register Map and Description PCI DIO 96 User Manual 5 6 National Instruments Corporation Figure 5 2 Control Word Format for the 82C53 Register Description for the Interrupt Control Registers There are two interrupt control registers on the PCI DIO 96 One of these registers has individual enable bits for the two interr
5. Instruments used _________________________________________________________________ _______________________________________________________________________________ National Instruments hardware product model __________ Revision _______________________ Configuration ___________________________________________________________________ National Instruments software product ___________________________ Version ____________ Configuration ___________________________________________________________________ The problem is __________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ List any error messages ___________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ The following steps reproduce the problem ____________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ ________________________________________________
6. D DAQ a system that uses the personal computer to collect measure and generate electrical signals DI digital input DIO digital input output DIRQ0 PPI D port A interrupt enable bit DIRQ1 PPI D port B interrupt enable bit DMA direct memory access a method by which data can be transferred to from computer memory from to a device or memory on the bus while the processor does something else DMA is the fastest method of transferring data to from computer memory DO digital output DPA PPI D port A DPB PPI D port B DPC PPI D port C Glossary PCI DIO 96 User Manual G 4 National Instruments Corporation F ft feet G GND ground signal H hex hexadecimal I IBF input buffer full signal in inches INTE1 port A output interrupt enable bit INTE2 port A input interrupt enable bit INTEA port A interrupt enable bit INTEB port B interrupt enable bit INTEN interrupt enable bit INTRA port A interrupt request status INTRB port B interrupt request status I O input output L LED light emitting diode LSB least significant bit Glossary National Instruments Corporation G 5 PCI DIO 96 User Manual M m meters max maximum MB megabytes of memory min minutes min minimum MSB most significant bit O OBF output buffer full signal P PA PB PC lt 0 7 gt port A B or C 0 through 7 lines PCI Peripheral Component Interconnect
7. a high performance expansion bus architecture originally developed by Intel to replace ISA and EISA It is achieving widespread acceptance as a standard for PCs and work stations it offers a theoretical maximum transfer rate of 132 Mbytes s port a digital port consisting of four or eight lines of digital input and or output PPI programmable peripheral interface R RD read signal Glossary PCI DIO 96 User Manual G 6 National Instruments Corporation S S samples s seconds SCXI Signal Conditioning eXtensions for Instrumentation the National Instruments product line for conditioning low level signals within an external chassis near sensors so only high level signals are sent to DAQ boards in the noisy PC environment signal conditioning the manipulation of signals to prepare them for digitizing STB strobe input signal T TTL transistor transistor logic typ typical V V volts VDC volts direct current VI virtual instrument a combination of hardware and or software elements typically used with a PC that has the functionality of a classic standalone instrument Vin input voltage W W watts WRT write signal National Instruments Corporation I 1 PCI DIO 96 User Manual Index Numbers 5 V supply pin connecting directly to ground or other voltage source warning 3 8 description table 3 4 82C53 Programmable Interval Timer data sheet C 1 to C 12 theory of o
8. 20 250 T10 RD 1 to IBF 0 150 All timing values are in nanoseconds T1 T6 T7 T3 T4 T10 T2 T5 T8 T9 WR OBF INTR ACK STB IBF RD DATA National Instruments Corporation 4 1 PCI DIO 96 User Manual Chapter4 Theory of Operation This chapter contains a functional overview of the PCI DIO 96 and explains the operation of each functional unit comprising the PCI DIO 96 Functional Overview The block diagram in Figure 4 1 illustrates the key functional components of the PCI DIO 96 board Chapter 4 Theory of Operation PCI DIO 96 User Manual 4 2 National Instruments Corporation Figure 4 1 PCI DIO 96 Block Diagram PCI Interface Circuitry The PCI DIO 96 uses the MITE ASIC to communicate with the PCI bus The MITE ASIC was designed by National Instruments specifically for data acquisition The PCI DIO 96 is fully compliant with Local Bus Specification 2 0 The base memory address and interrupt level for the board are stored inside the MITE at power on You do not need to set any switches or jumpers I O Connector Interrupt Control Circuitry Port A Port B Port C Port A Port B Port C Port A Port B Port C Port A Port B Port C 8 8 8 8 8 8 8 8 8 8 8 8 MITE PCI Interface Circuitry Interrupt 1 Data Bus Interrupt Bus Interrupt PCI 1 A Fuse 5 VDC System 2 Ar
9. National Instruments Software APC7 BPC7 CPC7 or DPC7 APC6 BPC6 CPC6 or DPC6 APC5 BPC5 CPC5 or DPC5 APC4 BPC4 CPC4 or DPC4 APC3 BPC3 CPC3 or DPC3 APC2 BPC2 CPC2 or DPC2 APC1 BPC1 CPC1 or DPC1 APC0 BPC0 CPC0 or DPC0 Chapter 3 Signal Connections National Instruments Corporation 3 7 PCI DIO 96 User Manual Figure 3 3 depicts signal connections for three typical digital I O applications Figure 3 3 Digital I O Connections Block Diagram In Figure 3 3 PPI A port A is configured for digital output and PPI C port B is configured for digital input Digital input applications include receiving TTL signals and sensing external device states such as the state of the switch in Figure 3 3 Digital output applications include sending TTL signals and driving external devices such as the LED shown in Figure 3 3 41 43 45 47 67 69 71 73 50 100 GND PCI DIO 96 Board Switch I O Connector 5 V 5 V LED PPI C Port B CPB lt 7 4 gt PPI A Port A APA lt 3 0 gt TTL Signal Chapter 3 Signal Connections PCI DIO 96 User Manual 3 8 National Instruments Corporation Power Connections Pins 49 and 99 of the I O connector supply 5 V from the computer s power supply via a self resetting fuse The fuse will reset automatically within a few seconds after the overcurrent condition is removed These pins are reference
10. PPI x PPI x where the x is replaced by A B C or D refers to one of the four programmable peripheral interface PPI chips on the PCI DIO 96 About This Manual National Instruments Corporation xi PCI DIO 96 User Manual SCXI SCXI stands for Signal Conditioning eXtensions for Instrumentation and is a National Instruments product line designed to perform front end signal conditioning for National Instruments plug in DAQ boards lt gt Angle brackets containing numbers separated by an ellipses represent a range of values associated with a bit signal or port for example ACH lt 0 7 gt stands for ACH0 through ACH7 Abbreviations acronyms metric prefixes mnemonics symbols and terms are listed in the Glossary National Instruments Documentation The PCI DIO 96 User Manual is one piece of the documentation set for your data acquisition system You could have any of several types of manuals depending on the hardware and software in your system Use the manuals you have as follows Getting Started with SCXI If you are using SCXI this is the first manual you should read It gives an overview of the SCXI system and contains the most commonly needed information for the modules chassis and software Your SCXI hardware user manuals If you are using SCXI read these manuals next for detailed information about signal connections and module configuration They also explain in greater detail how the module wo
11. 18 20 22 24 26 28 30 32 BPB lt 7 0 gt Bidirectional data lines for port B of PPI B BPB7 is the MSB BPB0 the LSB 33 35 37 39 41 43 45 47 APA lt 7 0 gt Bidirectional data lines for port A of PPI A APA7 is the MSB APA0 the LSB 34 36 38 40 42 44 46 48 BPA lt 7 0 gt Bidirectional data lines for port A of PPI B BPA7 is the MSB BPA0 the LSB 49 99 5 V supply 5 Volts These pins are fused for up to 1 A total of 4 65 to 5 25 V 50 100 GND Ground These pins are connected to the computer ground signal 51 53 55 57 59 61 63 65 CPC lt 7 0 gt Bidirectional data lines for port C of PPI C CPC7 is the MSB CPC0 the LSB 52 54 56 58 60 62 64 66 DPC lt 7 0 gt Bidirectional data lines for port C of PPI D DPC7 is the MSB DPC0 the LSB 67 69 71 73 75 77 79 81 CPB lt 7 0 gt Bidirectional data lines for port B of PPI C CPB7 is the MSB CPB0 the LSB 68 70 72 74 76 78 80 82 DPB lt 7 0 gt Bidirectional data lines for port B of PPI D DPB7 is the MSB DPB0 the LSB Chapter 3 Signal Connections National Instruments Corporation 3 5 PCI DIO 96 User Manual Port C Pin Assignments The signals assigned to port C depend on how the 82C55A is configured In mode 0 or no handshaking configuration port C is configured as two 4 bit I O ports In modes 1 and 2 or handshaking configuration port C is used for status and handshaking si
12. 8 bit ports A and B and two 4 bit ports upper and lower nibbles of port C Any port can be input or output Outputs are latched but inputs are not latched Mode 1 This mode transfers data that is synchronized by handshaking signals Ports A and B use the eight lines of port C to generate or receive the handshake signals This mode divides the ports into two groups group A and group B and includes the following features Each group contains one 8 bit data port port A or port B and one 4 bit control data port upper or lower nibble of port C The 8 bit data ports can be either input or output both are latched The 4 bit ports are used for control and status of the 8 bit data ports Interrupt generation and enable disable functions are available Mode 2 This mode can be used for communication over a bidirectional 8 bit bus Handshaking signals are used in a manner similar to mode 1 Mode 2 is available for use in group A only port A and the upper nibble of port C Other features of this mode include the following One 8 bit bidirectional port port A and a 5 bit control status port port C Latched inputs and outputs Interrupt generation and enable disable functions Single Bit Set Reset Feature Any of the eight bits of port C can be set or reset with one control word This feature generates control signals for port A and port B when these ports are operating in mode 1
13. ACK signal description table 3 8 Mode 1 output timing figure 3 10 Index PCI DIO 96 User Manual I 2 National Instruments Corporation Mode 2 bidirectional timing figure 3 12 AIRQ0 bit 5 8 AIRQ1 bit 5 8 APA lt 7 0 gt signal table 3 4 APB lt 7 0 gt signal table 3 4 APC lt 7 0 gt signal table 3 4 ASIC MITE Application specific Integrated Circuit chip 6 3 B BIRQ0 bit 5 8 BIRQ1 bit 5 8 bit descriptions See also Port C status word bit definitions AIRQ0 5 8 AIRQ1 5 8 BIRQ0 5 8 BIRQ1 5 8 CIRQ0 5 7 CIRQ1 5 7 CTR1 5 9 CTRIRQ 5 9 DIRQ0 5 7 DIRQ1 5 7 INTEN 5 9 board configuration 2 2 BPA lt 7 0 gt signal table 3 4 BPB lt 7 0 gt signal table 3 4 BPC lt 7 0 gt signal table 3 4 bulletin board support D 1 bus interface specifications A 2 C cabling custom 1 5 CIRQ0 bit 5 7 CIRQ1 bit 5 7 ComponentWorks software 1 2 configuration 2 2 control words 82C53 Register Group control word format figure 5 6 82C55A Register Group control word formats figure 5 4 Port C set reset control words table 5 5 Mode 1 strobed input Port A configuration figure 6 10 Port B configuration figure 6 11 Mode 1 strobed output Port A configuration figure 6 14 Port B configuration figure 6 14 Mode 2 bidirectional bus figure 6 17 CPA lt 7 0 gt signal table 3 5 CPB lt 7 0 gt signal table 3 4 CPC lt 7 0 gt signal table 3 4 CTR1 bit 5 9 CTRIR
14. AIRQ1 PPI A Port B Interrupt Enable Bit If this bit and the INTEN bit in Interrupt Control Register 2 are both set PPI A sends an interrupt INTRB to the computer If this bit is cleared PPI A does not send the interrupt INTRB to the computer regardless of the setting of INTEN 0 AIRQ0 PPI A Port A Interrupt Enable Bit If this bit and the INTEN bit in Interrupt Control Register 2 are both set PPI A sends an interrupt INTRA to the computer If this bit is cleared PPI A does not send the interrupt INTRA to the computer regardless of the setting of INTEN Chapter 5 Register Map and Description National Instruments Corporation 5 9 PCI DIO 96 User Manual Interrupt Control Register 2 Address Base address 15 hex Type Write only Word Size 8 bit Bit Map Bit Name Description 7 3 X Don t care bit 2 INTEN Interrupt Enable Bit If this bit is set the PCI DIO 96 can interrupt the computer If this bit is cleared the PCI DIO 96 cannot generate interrupts to the computer regardless of the status of the bits in Interrupt Control Register 2 1 CTRIRQ Counter Interrupt Enable Bit If this bit is set the 82C53 counter outputs can interrupt the computer If this bit is cleared the counter outputs have no effect 0 CTR1 Counter Select Bit If this bit is set the output from counter 1 of the 82C53 is connected to the interrupt request circuitry In this mode counter 0 of the 82C53 ac
15. Corporation National Instruments Corporation 6504 Bridge Point Parkway 512 794 5678 Austin TX 78730 5039 National Instruments Corporation G 1 PCI DIO 96 User Manual Glossary Numbers Symbols degrees gt greater than greater than or equal to lt less than negative of or minus ohms per percent Prefix Meaning Value p pico 10 12 n nano 10 9 micro 10 6 m milli 10 3 k kilo 103 M mega 106 G giga 109 Glossary PCI DIO 96 User Manual G 2 National Instruments Corporation plus or minus positive of or plus 5 V 5 Volts signal A A amperes ACK acknowledge input signal AIRQ0 PPI A port A interrupt enable bit AIRQ1 PPI A port B interrupt enable bit ANSI American National Standards Institute APA PPI A port A APB PPI A port B APC PPI A port C ASIC Application Specific Integrated Circuit AWG American Wire Gauge B BIRQ0 PPI B port A interrupt enable bit BIRQ1 PPI B port B interrupt enable bit BPA PPI B port A BPB PPI B port B BPC PPI B port C Glossary National Instruments Corporation G 3 PCI DIO 96 User Manual C C Celsius CIRQ0 PPI C port A interrupt enable bit CIRQ1 PPI C port B interrupt enable bit cm centimeters CPA PPI C port A CPB PPI C port B CPC PPI C port C CTR1 counter select bit CTRIRQ counter interrupt enable bit
16. DIO 96 Interrupt Control Circuitry Block Diagram 4 4 Figure 5 1 Control Word Formats for the 82C55A 5 4 Figure 5 2 Control Word Format for the 82C53 5 6 Figure 6 1 Control Word to Configure Port A for Mode 1 Input 6 10 Figure 6 2 Control Word to Configure Port B for Mode 1 Input 6 11 Figure 6 3 Port C Pin Assignments on I O Connector when Port C Configured for Mode 1 Input 6 13 Figure 6 4 Control Word to Configure Port A for Mode 1 Output 6 14 Figure 6 5 Control Word to Configure Port B for Mode 1 Output 6 14 Figure 6 6 Port C Pin Assignments on I O Connector when Port C Configured for Mode 1 Output 6 16 Figure 6 7 Control Word to Configure Port A as Mode 2 Bidirectional Data Bus 6 17 Figure 6 8 Port C Pin Assignments on I O Connector when Port C is Configured for Mode 2 6 19 Tables Table 3 1 Signal Descriptions for PCI DIO 96 I O Connector Pins 3 4 T
17. Initialization for the PC 6 3 PCI Initialization for the Macintosh 6 4 Programming Options 6 4 Using NI DAQ and the Driver Toolkit 6 4 Performing Simple Accesses 6 5 Developing Your Own Interrupt Method 6 5 Port Identification 6 6 Programming Considerations for the 82C55A 6 7 Modes of Operation 6 7 Mode 0 6 7 Mode 1 6 8 Mode 2 6 8 Table of Contents National Instruments Corporation vii PCI DIO 96 User Manual Single Bit Set Reset Feature 6 8 Mode 0 Basic I O 6 8 Mode 0 Basic I O Programming Exampl
18. Mode 1 Strobed Output Note For mode 1 examples you must configure the don t care bits appropriately in the control word if you want to use the other ports in combination with the example The control word written to the Configuration Register to configure port A for output in mode 1 is shown in Figure 6 4 You can use bits PC4 and PC5 of port C as extra input or output lines PC7 I O PC6 I O PC5 IBFA PC4 STBA PC3 INTRA PC2 STBB PC1 IBFB PC0 INTRB Group A Group B Chapter 6 Programming PCI DIO 96 User Manual 6 14 National Instruments Corporation Figure 6 4 Control Word to Configure Port A for Mode 1 Output The control word written to the Configuration Register to configure port B for output in mode 1 is shown in Figure 6 5 Notice that port B does not have extra input or output lines from port C Figure 6 5 Control Word to Configure Port B for Mode 1 Output During a mode 1 data write transfer you can obtain the status of the handshaking lines and interrupt signals by reading port C Notice that the bit definitions are different for a write and a read transfer Port C bits PC4 and PC5 1 Input 0 Output D7 D6 D5 D4 D3 D2 D1 D0 1 0 1 0 1 0 X X X D7 D6 D5 D4 D3 D2 D1 D0 1 X X X X 1 X 0 Chapter 6 Programming National Instruments Corporation 6 15 PCI DIO 96 User Manual Port C Status Word Bit Definitions for Output Ports A and B Address Base
19. PCI DIO 96 User Manual A 96 Bit Parallel Digital I O Interface for PCI Bus Computers January 1997 Edition Part Number 320938B 01 Copyright 1996 1997 National Instruments Corporation All Rights Reserved support natinst com E mail info natinst com FTP Site ftp natinst com Web Address http www natinst com BBS United States 512 794 5422 BBS United Kingdom 01635 551422 BBS France 01 48 65 15 59 512 418 1111 Tel 512 795 8248 Fax 512 794 5678 Australia 03 9879 5166 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Canada Ontario 905 785 0085 Canada Qu bec 514 694 8521 Denmark 45 76 26 00 Finland 09 527 2321 France 01 48 14 24 24 Germany 089 741 31 30 Hong Kong 2645 3186 Israel 03 5734815 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico 5 520 2635 Netherlands 0348 433466 Norway 32 84 84 00 Singapore 2265886 Spain 91 640 0085 Sweden 08 730 49 70 Switzerland 056 200 51 51 Taiwan 02 377 1200 U K 01635 523545 National Instruments Corporate Headquarters 6504 Bridge Point Parkway Austin TX 78730 5039 Tel 512 794 0100 Internet Support Bulletin Board Support Fax on Demand Support Telephone Support U S International Offices Important Information Warranty The PCI DIO 96 is warranted against defects in materials and workmanship for a period of one year from the date of shipment as evidenced by receipts or other documentation
20. has the pin assignments shown in Figure 6 6 when in mode 1 output Notice that the status of ACKA and ACKB are not included when port C is read Figure 6 6 Port C Pin Assignments on I O Connector when Port C Configured for Mode 1 Output Mode 1 Strobed Output Programming Example The following example shows how to configure PPI A for mode 1 output Write 8255Cnfg 0xA0 Set mode 1 port A is an output Loop until OBFA PC7 is set indicating that the data last written to port A has been read Write PortA Data Write data to port A Mode 2 Bidirectional Bus Note For mode 2 examples you must configure the don t care bits appropriately in the control word if you want to use the other ports in combination with the example Mode 2 has an 8 bit bus that can transfer both input and output data without changing the configuration The data transfers are synchronized with handshaking lines in port C This mode uses only port A however port B can be used in either mode 0 or mode 1 while port A is configured for mode 2 The control word written to the Configuration Register to configure port A as a bidirectional data bus in mode 2 is shown in Figure 6 7 If port B is configured for mode 0 you can use PC2 PC1 and PC0 of port C as extra input or output lines PC7 OBFA PC6 ACKA PC5 I O PC4 I O PC3 INTRA PC2 ACKB PC1 OBFB PC0 INTRB Group A Group B Chapter 6 Programming National Instruments Corporatio
21. include a bulletin board service an FTP site a Fax on Demand system and e mail support If you have a hardware or software problem first try the electronic support systems If the information available on these systems does not answer your questions we offer fax and telephone support through our technical support centers which are staffed by applications engineers Electronic Services National Instruments has BBS and FTP sites dedicated for 24 hour support with a collection of files and documents to answer most common customer questions From these sites you can also download the latest instrument drivers updates and example programs For recorded instructions on how to use the bulletin board and FTP services and for BBS automated information call 512 795 6990 You can access these services at United States 512 794 5422 Up to 14 400 baud 8 data bits 1 stop bit no parity United Kingdom 01635 551422 Up to 9 600 baud 8 data bits 1 stop bit no parity France 01 48 65 15 59 Up to 9 600 baud 8 data bits 1 stop bit no parity To access our FTP site log on to our Internet host ftp natinst com as anonymous and use your Internet address such as joesmith anywhere com as your password The support files and documents are located in the support directories Bulletin Board Support FTP Support Fax on Demand is a 24 hour information retrieval system containing a library of documents on a wide range of technical informat
22. not be liable for any delay in performance due to causes beyond its reasonable control The warranty provided herein does not cover damages defects malfunctions or service failures caused by owner s failure to follow the National Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent acts and power failure or surges fire flood accident actions of third parties or other events outside reasonable control Copyright Under the copyright laws this publication may not be reproduced or transmitted in any form electronic or mechanical including photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation Trademarks LabVIEW NI DAQ ComponentWorks CVI MITE and SCXI are trademarks of National Instruments Corporation Product and company names listed are trademarks or trade names of their respective companies WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS National Instruments products are not designed with components and testing intended to ensure a level of reliability suitable for use in treatment and diagnosis of humans Applications of National Instruments products involving medical or clinical treatment can create a potential for accidental injury caused by product
23. of video board installed ____________________________________________________ Operating system DOS Windows or MacOS ______________________________________ Operating system version _______________________________________________________ Operating system mode _________________________________________________________ Programming language _________________________________________________________ Programming language version __________________________________________________ Other boards in system _________________________________________________________ Base memory address of other boards _____________________________________________ Interrupt level of other boards ___________________________________________________ Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products This information helps us provide quality products to meet your needs Title PCI DIO 96 User Manual Edition Date January 1997 Part Number 320938B 01 Please comment on the completeness clarity and organization of the manual _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ ________________________________________
24. or mode 2 Mode 0 Basic I O You can use mode 0 for simple I O functions no handshaking for each of the three ports and assign each port as an input or an output port Table 6 2 shows the 16 possible I O configurations Notice that bit 7 of the control word is set when programming the mode of operation for each port Chapter 6 Programming National Instruments Corporation 6 9 PCI DIO 96 User Manual Table 6 2 Mode 0 I O Configurations Number Control Word Bit 76543210 Group A Group B Port A Port C1 Port B Port C2 0 10000000 Output Output Output Output 1 10000001 Output Output Output Input 2 10000010 Output Output Input Output 3 10000011 Output Output Input Input 4 10001000 Output Input Output Output 5 10001001 Output Input Output Input 6 10001010 Output Input Input Output 7 10001011 Output Input Input Input 8 10010000 Input Output Output Output 9 10010001 Input Output Output Input 10 10010010 Input Output Input Output 11 10010011 Input Output Input Input 12 10011000 Input Input Output Output 13 10011001 Input Input Output Input 14 10011010 Input Input Input Output 15 10011011 Input Input Input Input 1 Upper nibble of port C 2 Lower nibble of port C Chapter 6 Programming PCI DIO 96 User Manual 6 10 National Instruments Corporation Mode 0 Basic I O Programming Example The following example s
25. to D 2 theory of operation 82C53 Programmable Interval Timer 4 3 82C55A Programmable peripheral Interface 4 3 interrupt control circuitry 4 3 block diagram 4 4 PCI interface circuitry 4 2 PCI DIO 96 block diagram 4 2 timing specifications 3 8 to 3 12 Mode 1 input timing 3 10 Mode 1 output timing 3 11 Mode 2 bidirectional timing 3 12 Index PCI DIO 96 User Manual I 8 National Instruments Corporation signal names used in timing diagrams table 3 8 to 3 9 U unpacking the PCI DIO 96 1 6 W WR signal description table 3 9 Mode 1 output timing figure 3 11 Mode 2 bidirectional timing figure 3 12
26. use to request help from National Instruments or to comment on our products The Glossary contains an alphabetical list and description of terms used in this manual including abbreviations acronyms metric prefixes mnemonics symbols and terms The Index contains an alphabetical list of key terms and topics used in this manual including the page where each one can be found Conventions Used in This Manual The following conventions are used in this manual bold Bold text denotes menu items function panel items and dialog box buttons or options bold italic Bold italic text denotes a note caution or warning italic Italic text denotes emphasis a cross reference or an introduction to a key concept Macintosh Macintosh refers to all Macintosh computers with PCI bus unless otherwise noted monospace Text in this font denotes text or characters that are to be literally input from the keyboard sections of code programming examples and syntax examples This font is also used for the proper names of disk drives paths directories programs subprograms subroutines device names functions variables parameters file names and extensions and for statements and comments taken from program code NI DAQ NI DAQ is used in this manual to refer to NI DAQ software for PC or Macintosh computers unless otherwise noted PC PC refers to all IBM PC compatible computers with PCI bus
27. 00 for this example It is important that the memory range to which you re map the board is not being used by another device or system resource You can exclude this memory from use with a memory manager PCI Initialization for the Macintosh Programming Options To program at the register level you must know the PCI DIO 96 base memory address and you must install an interrupt handler to generate interrupts Both of these operations are difficult tasks To make this process easier National Instruments provides a driver toolkit and additional NI DAQ functions to perform these operations You have three options to program the PCI DIO 96 The following sections describe these options Using NI DAQ and the Driver Toolkit Included on the NI DAQ installation media is a toolkit for creating plug in drivers for most of the devices which NI DAQ controls Using this toolkit you can write a plug in driver for your PCI board but continue to use NI DAQ for any other boards that are installed in your Chapter 6 Programming National Instruments Corporation 6 5 PCI DIO 96 User Manual system When you develop a driver using the toolkit your driver plug in has access to all the information and support functions it needs to control the device and respond to interrupts When you use the toolkit your application is divided into two parts a driver and an interface to the driver You use the driver to control the hardware and the interface to co
28. 21 PCI DIO 96 User Manual Mode 1 Strobed Input Programming Example The following example shows how to set up interrupts for mode 1 input for port A Write 8255Cnfg 0xB0 Set mode 1 port A is an input Write 8255Cnfg 0x09 Set PC4 to enable interrupts from the 82C55A Write IREG2 0x04 Set INTEN bit Write IREG1 0x01 Set AIRQ0 to enable PPI A port A interrupts Mode 1 Strobed Output Programming Example The following example shows how to set up interrupts for mode 1 output for port A Write 8255Cnfg 0xA0 Set mode 1 port A is an output Write 8255Cnfg 0x0D Set PC6 to enable interrupts from 82C55A Write IREG2 0x04 Set INTEN bit Write IREG1 0x01 Set AIRQ0 to enable PPI A port A interrupts Mode 2 Bidirectional Bus Programming Example The following example shows how to set up interrupts for mode 2 output transfers Write 8255Cnfg 0xC0 Set mode 2 port A is bidirectional Write 8255Cnfg 0x0D Set PC6 to enable interrupt from 82C55A Write IREG2 0x04 Set INTEN bit Write IREG1 0x01 Set AIRQ0 to enable PPI A port A interrupts The following example shows how to set up interrupts for mode 2 input transfers Write 8255Cnfg 0xC0 Set mode 2 port A is bidirectional Write 8255Cnfg 0x09 Set PC4 to enable interrupt from 82C55A Write IREG2 0x04 Set INTEN bit Write IREG1 0x01 Set AIRQ0 to enable PPI A port A interrupts Chapter 6 Programming PCI DIO 96 User Manual 6 22 Nationa
29. 45 01635 523154 Fax on Demand Support E Mail Support currently U S only Technical Support Form Photocopy this form and update it each time you make changes to your software or hardware and use the completed copy of this form as a reference for your current configuration Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently If you are using any National Instruments hardware or software products related to this problem include the configuration forms from their user manuals Include additional pages if necessary Name __________________________________________________________________________ Company _______________________________________________________________________ Address ________________________________________________________________________ _______________________________________________________________________________ Fax ___ ___________________ Phone ___ ________________________________________ Computer brand ________________ Model ________________ Processor___________________ Operating system include version number ____________________________________________ Clock speed ______MHz RAM _____MB Display adapter __________________________ Mouse ___yes ___no Other adapters installed _______________________________________ Hard disk capacity _____MB Brand _____________________________________________
30. 6 19 mode configuration 3 5 to 3 6 overview 3 5 Port C set reset control words table 5 5 Port C status word bit definitions Mode 1 strobed input 6 12 to 6 13 IBFA 6 12 IBFB 6 12 INTEA 6 12 INTEB 6 12 INTRA 6 12 INTRB 6 12 I O 6 12 Mode 1 strobed output 6 15 to 6 16 INTEA 6 15 INTEB 6 15 INTRA 6 15 INTRB 6 15 I O 6 15 OBFA 6 15 OBFB 6 15 Mode 2 bidirectional bus 6 18 to 6 19 IBFA 6 18 INT1 6 18 INTE2 6 18 INTRA 6 18 Index PCI DIO 96 User Manual I 6 National Instruments Corporation I O 6 19 OBFA 6 18 port identification 6 6 to 6 7 power connections 3 8 power requirement specifications A 2 programming 6 1 to 6 23 82C53 programming considerations 6 22 to 6 23 82C55A considerations 6 7 to 6 8 Mode 0 basic I O 6 8 to 6 10 Mode 1 strobed input 6 10 to 6 13 Mode 1 strobed output 6 13 to 6 16 Mode 2 bidirectional bus 6 16 to 6 19 modes of operation 6 7 to 6 8 Mode 0 6 7 to 6 8 Mode 1 6 8 Mode 2 6 8 single bit set reset feature 6 8 common terms used in examples 6 2 interrupt generation developing your own driver 6 5 to 6 6 simple access with Get_DAQ_device_Info 6 5 using NI DAQ software 6 4 to 6 5 interrupt handling 6 20 to 6 21 82C53 programming example 6 22 to 6 23 82C55A programming examples 6 20 to 6 21 Mode 0 basic I O 6 8 to 6 10 configurations table 6 9 programming example 6 10 Mode 1 strobed input 6 10 to 6 13 control word to configure Port A f
31. F Output Output Buffer Full A low signal on this handshaking line indicates that data has been written to the port Chapter 3 Signal Connections National Instruments Corporation 3 9 PCI DIO 96 User Manual INTR Output Interrupt Request This signal becomes high when the 82C55A requests service during a data transfer The appropriate interrupt enable bits must be set to generate this signal RD Internal Read This signal is the read signal generated from the control lines of the computer I O expansion bus WR Internal Write This signal is the write signal generated from the control lines of the computer I O expansion bus DATA Bidirectional Data Lines at the Specified Port This signal indicates the availability of data on the data lines at a port that is in the output mode If the port is in the input mode this signal indicates when the data on the data lines should be valid Table 3 3 Signal Names Used in Timing Diagrams Continued Name Type Description Chapter 3 Signal Connections PCI DIO 96 User Manual 3 10 National Instruments Corporation Mode 1 Input Timing The timing specifications for an input transfer in mode 1 are as follows Figure 3 4 Timing Specifications for Mode 1 Input Transfer Name Description Minimum Maximum T1 STB Pulse Width 100 T2 STB 0 to IBF 1 150 T3 Data before STB 1 20 T4 STB 1 to INTR 1 150 T5 Data af
32. National Instruments will at its option repair or replace equipment that proves to be defective during the warranty period This warranty includes parts and labor The media on which you receive National Instruments software are warranted not to fail to execute programming instructions due to defects in materials and workmanship for a period of 90 days from date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period National Instruments does not warrant that the operation of the software shall be uninterrupted or error free A Return Material Authorization RMA number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty National Instruments believes that the information in this manual is accurate The document has been carefully reviewed for technical accuracy In the event that technical or typographical errors exist National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition The reader should consult National Instruments if errors are suspected In no event shall Nation
33. Q bit 5 9 custom cabling 1 5 customer communication xii D 1 to D 2 D DATA signal description table 3 9 Mode 1 input timing figure 3 10 Mode 1 output timing figure 3 11 Mode 2 bidirectional timing figure 3 12 digital I O signal connections 3 6 to 3 7 block diagram 3 7 specifications and ratings 3 6 digital I O specifications A 1 to A 2 DIRQ0 bit 5 7 DIRQ1 bit 5 7 documentation conventions used in manual x xi National Instruments documentation xi xii organization of manual ix x related documentation xii Index National Instruments Corporation I 3 PCI DIO 96 User Manual DPA lt 7 0 gt signal table 3 5 DPB lt 7 0 gt signal table 3 4 DPC lt 7 0 gt signal table 3 4 E electronic support services D 1 to D 2 e mail support D 2 environment specifications A 2 equipment optional 1 5 F fax and telephone support D 2 FaxBack support D 2 FTP support D 1 fuse automatic reset 3 8 G Get_DAQ_device_Info call for simple accesses 6 5 GND signal table 3 4 H hardware installation 2 1 I IBF signal description table 3 8 Mode 1 input timing figure 3 10 Mode 2 bidirectional timing figure 3 12 IBFA bit Mode 1 strobed input 6 12 Mode 2 bidirectional bus 6 18 IBFB bit 6 12 installation hardware 2 1 software 2 1 unpacking the PCI DIO 96 1 6 INTE1 bit 6 18 INTE2 bit 6 18 INTEA bit Mode 1 strobed input 6 12 Mode 1 strobed output 6 15 INTEB b
34. _______________________________ _______________________________________________________________________________ _______________________________________________________________________________ PCI DIO 96 Hardware and Software Configuration Form Record the settings and revisions of your hardware and software on the line to the right of each item Complete a new copy of this form each time you revise your software or hardware configuration and use this form as a reference for your current configuration Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently National Instruments Products PCI DIO 96 board _____________________________________________________________ PCI DIO 96 board serial number _________________________________________________ Base memory address of PCI DIO 96 board ________________________________________ Interrupt level of PCI DIO 96 board ______________________________________________ Programming choice NI DAQ LabVIEW LabWindows CVI or other __________________ Software version ______________________________________________________________ Other Products Computer make and model ______________________________________________________ Microprocessor _______________________________________________________________ Clock frequency or speed _______________________________________________________ Type
35. _______________________________________ _______________________________________________________________________________ _______________________________________________________________________________ If you find errors in the manual please record the page numbers and describe the errors _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ Thank you for your help Name _________________________________________________________________________ Title __________________________________________________________________________ Company _______________________________________________________________________ Address ________________________________________________________________________ _______________________________________________________________________________ Phone ___ __________________________ Fax ___ _________________________________ Mail to Technical Publications Fax to Technical Publications National Instruments
36. able 3 2 Port C Signal Assignments 3 5 Table 3 3 Signal Names Used in Timing Diagrams 3 8 Table 5 1 PCI DIO 96 Address Map 5 2 Table 5 2 Port C Set Reset Control Words 5 5 Table 6 1 Port Identification 6 7 Table 6 2 Mode 0 I O Configurations 6 9 National Instruments Corporation ix PCI DIO 96 User Manual About This Manual This manual describes the electrical and mechanical aspects of the PCI DIO 96 and contains information concerning its installation operation and programming The PCI DIO 96 is a member of the National Instruments PCI Series of expansion boards for PCI bus computers These boards are designed for high performance data acquisition and control for applications in laboratory testing production testing and industrial process monitoring and control Organization of This Manual The PCI DIO 96 User Manual is organized as follows Chapter 1 Introduction describes the PCI DIO 96 lists what you need to get started software programming choices and optional equipment describes custom cabling o
37. address 03 hex for PPI A Base address 07 hex for PPI B Base address 0B hex for PPI C Base address 0F hex for PPI D Type Read and write Word Size 8 bit Bit Map Bit Name Description 7 OBFA Output Buffer for Port A A low setting indicates that the CPU has written data to port A 6 INTEA Interrupt Enable Bit for Port A Setting this bit enables interrupts from port A of the 82C55A Control this bit by setting resetting PC6 5 4 I O Input Output These bits can be used for general purpose I O when port A is in mode 1 output If these bits are configured for output you must use the port C bit set reset function to manipulate them 3 INTRA Interrupt Request Status for Port A When INTEA and OBFA are high this bit is high indicating that an interrupt request is pending for port A 2 INTEB Interrupt Enable Bit for Port B Setting this bit enables interrupts from port B of the 82C55A Control this bit by setting resetting PC2 1 OBFB Output Buffer for Port B A low setting indicates that the CPU has written data to port B 0 INTRB Interrupt Request Status for Port B When INTEB and OBFB are high this bit is high indicating that an interrupt request is pending for port B 7 6 5 4 3 2 1 0 OBFA INTEA I O I O INTRA INTEB OBFB INTRB Chapter 6 Programming PCI DIO 96 User Manual 6 16 National Instruments Corporation At the digital I O connector port C
38. al Instruments be liable for any damages arising out of or related to this document or the information contained in it E XCEPT AS SPECIFIED HEREIN N ATIONAL I NSTRUMENTS MAKES NO WARRANTIES EXPRESS OR IMPLIED AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE C USTOMER S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF N ATIONAL I NSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER N ATIONAL I NSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA PROFITS USE OF PRODUCTS OR INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY THEREOF This limitation of the liability of National Instruments will apply regardless of the form of action whether in contract or tort including negligence Any action against National Instruments must be brought within one year after the cause of action accrues National Instruments shall
39. ation 6 22 Interrupt Programming Example 6 22 Appendix A Specifications Appendix B MSM82C55A Data Sheet Appendix C MSM82C53 Data Sheet Appendix D Customer Communication Glossary Index Table of Contents PCI DIO 96 User Manual viii National Instruments Corporation Figures Figure 1 1 The Relationship between the Programming Environment NI DAQ and Your Hardware 1 4 Figure 3 1 PCI DIO 96 Cable Assembly Connector Pinout for Pins 1 through 50 with the R1005050 Ribbon Cable 3 2 Figure 3 2 PCI DIO 96 Cable Assembly Connector Pinout for Pins 51 through 100 with the R1005050 Ribbon Cable 3 3 Figure 3 3 Digital I O Connections Block Diagram 3 7 Figure 3 4 Timing Specifications for Mode 1 Input Transfer 3 10 Figure 3 5 Timing Specifications for Mode 1 Output Transfer 3 11 Figure 3 6 Timing Specifications for Mode 2 Bidirectional Transfer 3 12 Figure 4 1 PCI DIO 96 Block Diagram 4 2 Figure 4 2 PCI
40. bit by setting resetting PC4 3 INTRA Interrupt Request Status for Port A If INTE1 and IBFA are high this bit is high indicating that an interrupt request is pending for port A input transfers If INTE2 and OBFA are high this bit is high indicating that an interrupt request is pending for port A output transfers 7 6 5 4 3 2 1 0 OBFA INTE1 IBFA INTE2 INTRA I O I O I O Chapter 6 Programming National Instruments Corporation 6 19 PCI DIO 96 User Manual Bit Name Description Continued 2 0 I O Input Output Use these bits for general purpose I O lines if group B is configured for mode 0 If group B is configured for mode 1 refer to the bit explanations shown in the preceding mode 1 sections Figure 6 8 shows the port C pin assignments on the digital I O connector when port C is configured for mode 2 Notice that the status of STBA and the status of ACKA are not included in the port C status word Figure 6 8 Port C Pin Assignments on I O Connector when Port C is Configured for Mode 2 Mode 2 Bidirectional Bus Programming Example The following example shows how to configure PPI A for mode 2 input and output Write 8255Cnfg 0xC0 Set mode 2 port A is bidirectional Loop until OBFA PC7 is set indicating that the data last written to port A has been read Write PortA Data Write data to port A Loop until IBFA PC5 is set indicating that data is available in port A to be read Rea
41. bitration 2 Error Reporting 2 Interface Control 6 Data Address 37 82C53 Timer 82C55A PPI C 82C55A PPI D 82C55A PPI B 82C55A PPI A Chapter 4 Theory of Operation National Instruments Corporation 4 3 PCI DIO 96 User Manual 82C55A Programmable Peripheral Interface The four 82C55A PPI chips are the heart of the PCI DIO 96 Each of these chips has 24 programmable I O pins that represent three 8 bit ports PA PB and PC Each port can be programmed as an input or output port The 82C55A has three modes of operation simple I O mode 0 strobed I O mode 1 and bidirectional I O mode 2 In modes 1 and 2 the three ports are divided into two groups group A and group B Each group has eight data bits and four control and status bits from port C PC Modes 1 and 2 use handshaking signals from the computer to synchronize data transfers Refer to Chapter 6 Programming or to Appendix B MSM82C55A Data Sheet for more detailed information 82C53 Programmable Interval Timer The 82C53 programmable interval timer generates timed interrupt requests to your computer The 82C53 has three 16 bit counters which can each be used in one of six different modes The PCI DIO 96 uses two of the counters to generate interrupt requests the third counter is not used and is not accessible Refer to Chapter 5 Register Map and Description or to Appendix C MSM82C53 Data Sheet for more detailed information Interrupt C
42. complex issues between the computer and the DAQ hardware such as programming interrupts and DMA controllers NI DAQ maintains a consistent software interface among its different versions so that you can change platforms with minimal modifications to your code Whether you are using conventional programming languages ComponentWorks LabVIEW or LabWindows CVI your application uses the NI DAQ driver software as illustrated in Figure 1 1 Chapter 1 Introduction PCI DIO 96 User Manual 1 4 National Instruments Corporation Figure 1 1 The Relationship between the Programming Environment NI DAQ and Your Hardware Register Level Programming The final option for programming any National Instruments DAQ hardware is to write register level software Writing register level programming software can be very time consuming and inefficient and is not recommended for most users Even if you are an experienced register level programmer consider using NI DAQ or other National Instruments application software to program your National Instruments DAQ hardware Using NI DAQ ComponentWorks LabVIEW or LabWindows CVI software is easier than and as flexible as register level programming and can save weeks of development time ComponentWorks LabVIEW or LabWindows CVI Conventional Programming Environment NI DAQ Driver Software DAQ or SCXI Hardware Personal Computer or Workstation Chapter 1 Introduction National Instrume
43. computer You can program the 82C55A for almost any 8 bit or 16 bit digital I O application The OKI Semiconductor 82C53 counter timer chip has two usable counters that can generate timed interrupt requests to your computer The digital I O lines are all accessible through a 100 pin female connector The PCI DIO 96 is a completely switchless and jumperless DAQ board All resource allocation is completed automatically at startup so you will not need to set interrupt levels or base addresses for the PCI DIO 96 You can use the PCI DIO 96 in a wide range of digital I O applications For example you can connect the PCI DIO 96 to any of the following panel meters instruments and test equipment with BCD readouts and or controls or optically isolated solid state relays and I O module mounting racks With the PCI DIO 96 you can use your computer as a digital I O system controller for laboratory testing production testing and industrial process monitoring and control Detailed PCI DIO 96 specifications are in Appendix A Specifications Chapter 1 Introduction PCI DIO 96 User Manual 1 2 National Instruments Corporation What You Need to Get Started To set up and use your PCI DIO 96 board you will need the following K PCI DIO 96 board K PCI DIO 96 User Manual K One of the following software packages and documentation ComponentWorks LabVIEW for Macintosh LabVIEW for Windows LabWindows CVI for Windows NI DAQ
44. d PortA Now read the data from port A PC7 OBFA PC6 ACKA PC5 IBFA PC4 STBA PC3 INTRA PC2 PC1 PC0 Group A Group B The three port C lines associated with group B function based on the mode selected for group B that is if group B is configured for mode 0 PC lt 2 0 gt function as general purpose I O but if group B is configured for mode 1 input or output PC lt 2 0 gt function as handshaking lines as shown in the preceding mode 1 sections Chapter 6 Programming PCI DIO 96 User Manual 6 20 National Instruments Corporation Interrupt Handling You must set the INTEN bit of Interrupt Control Register 2 to enable interrupts from the PCI DIO 96 Clear this bit first to disable unwanted interrupts After all sources of interrupts have been disabled or placed in an inactive state you can set INTEN You must set INTEN before you generate an interrupt for proper operation To interrupt the computer using one of the 82C55A devices program the selected 82C55A for the I O mode desired In mode 1 set either the INTEA or the INTEB bit to enable interrupts from port A or port B respectively In mode 2 set either INTE1 or INTE2 for interrupts on output or input transfers respectively The INTE1 and INTE2 interrupt outputs are cascaded into a single interrupt output for port A After you enable interrupts from the 82C55A set the appropriate enable bit for the selected 82C55A for example if you select both
45. d to GND and can be used to power external digital circuitry For more information on these output pins see Appendix A Specifications Power rating 1 A at 4 65 to 5 25 V Warning Under no circumstances should you connect these 5 V power pins directly to ground or to any other voltage source on the PCI DIO 96 or any other device Doing so can damage the PCI DIO 96 and the computer National Instruments is NOT liable for damage resulting from such a connection Timing Specifications This section lists the timing specifications for handshaking with the PCI DIO 96 The handshaking lines STB and IBF synchronize input transfers The handshaking lines OBF and ACK synchronize output transfers Table 3 3 describes the connector pins on the PCI DIO 96 I O connector by pin number and gives the signal name and description of each signal connector pin Table 3 3 Signal Names Used in Timing Diagrams Name Type Description STB Input Strobe Input A low signal on this handshaking line loads data into the input latch IBF Output Input Buffer Full A high signal on this handshaking line indicates that data has been loaded into the input latch This is an input acknowledge signal ACK Input Acknowledge Input A low signal on this handshaking line indicates that the data written to the port has been accepted This signal is a response from the external device indicating that it has received the data from the PCI DIO 96 OB
46. e 6 10 Mode 1 Strobed Input 6 10 Port C Status Word Bit Definitions for Input Ports A and B 6 12 Mode 1 Strobed Input Programming Example 6 13 Mode 1 Strobed Output 6 13 Port C Status Word Bit Definitions for Output Ports A and B 6 15 Mode 1 Strobed Output Programming Example 6 16 Mode 2 Bidirectional Bus 6 16 Port C Status Word Bit Definitions for Bidirectional Data Path Port A Only 6 18 Mode 2 Bidirectional Bus Programming Example 6 19 Interrupt Handling 6 20 Interrupt Programming Examples for the 82C55A 6 20 Mode 1 Strobed Input Programming Example 6 21 Mode 1 Strobed Output Programming Example 6 21 Mode 2 Bidirectional Bus Programming Example 6 21 Programming Considerations for the 82C53 6 22 General Inform
47. e access using Get_DAQ_device_Info 6 5 Index National Instruments Corporation I 5 PCI DIO 96 User Manual overview 1 3 to 1 4 relationship to programming environment figure 1 4 toolkit for writing PCI driver 6 4 to 6 5 O OBF signal description table 3 8 Mode 1 output timing figure 3 11 Mode 2 bidirectional timing figure 3 12 OBFA bit Mode 1 strobed output 6 15 Mode 2 bidirectional bus 6 18 OBFB bit 6 15 operation of PCI DIO 96 See theory of operation optional equipment 1 5 P PCI initialization for Macintosh 6 4 to 6 5 developing your own interrupt method 6 5 to 6 6 performing simple accesses 6 5 port identification 6 6 to 6 7 programming options 6 4 to 6 6 using NI DAQ and driver toolkit 6 4 to 6 5 PCI initialization for PC 6 3 to 6 4 PCI interface circuitry 4 2 PCI local bus specifications 6 1 PCI DIO 96 block diagram 4 2 configuration 2 2 custom cabling 1 5 optional equipment 1 5 overview 1 1 requirements for getting started 1 2 software programming choices 1 2 to 1 3 ComponentWorks 1 2 LabVIEW application software 1 2 LabWindows CVI application software 1 3 NI DAQ driver software 1 3 to 1 4 register level programming 1 4 unpacking 1 6 physical specifications A 2 Port C pin assignments correlation between mode and handshaking terminology table 3 5 to 3 6 I O connector Mode 1 input figure 6 13 Mode 1 output figure 6 16 Mode 2 bidirectional bus
48. efer to this port as 0 Table 6 1 shows the correlation between the different port names Chapter 6 Programming National Instruments Corporation 6 7 PCI DIO 96 User Manual This manual also differs from the NI DAQ ComponentWorks LabWindows CVI and LabVIEW documentation by using different terminology to describe the 82C55A configurations Refer to Port C Pin Assignments in Chapter 3 Signal Connections for more information Programming Considerations for the 82C55A Modes of Operation The three basic modes of operation for the 82C55A are as follows Mode 0 Basic I O Mode 1 Strobed I O Mode 2 Bidirectional bus The 82C55A also has a single bit set reset feature for port C which is programmed by the 8 bit control word For additional information refer to Appendix B MSM82C55A Data Sheet Mode 0 This mode can be used for simple input and output operations for each port No handshaking is required a specified port simply writes to or reads from data Table 6 1 Port Identification ComponentWorks LabVIEW LabWindows CVI and NI DAQ PCI DIO 96 User Manual 0 1 2 3 4 5 6 7 8 9 10 11 PPI A Port A PPI A Port B PPI A Port C PPI B Port A PPI B Port B PPI B Port C PPI C Port A PPI C Port B PPI C Port C PPI D Port A PPI D Port B PPI D Port C Chapter 6 Programming PCI DIO 96 User Manual 6 8 National Instruments Corporation Mode 0 has the following features Two
49. failure or by errors on the part of the user or application designer Any use or application of National Instruments products for or involving medical or clinical treatment must be performed by properly trained and qualified medical personnel and all traditional medical safeguards equipment and procedures that are appropriate in the particular situation to prevent serious injury or death should always continue to be used when National Instruments products are being used National Instruments products are NOT intended to be a substitute for any form of established process procedure or equipment used to monitor or safeguard human health and safety in medical or clinical treatment National Instruments Corporation v PCI DIO 96 User Manual Table of Contents About This Manual Organization of This Manual ix Conventions Used in This Manual x National Instruments Documentation xi Related Documentation xii Customer Communication xii Chapter 1 Introduction About the PCI DIO 96
50. for Macintosh NI DAQ for PC Compatibles K Your computer Software Programming Choices There are several options to choose from when programming your National Instruments DAQ hardware You can use LabVIEW LabWindows CVI ComponentWorks or other application development environments with the NI DAQ instrument driver or you can register level program National Instruments Application Software ComponentWorks contains tools for data acquisition and instrument control built on NI DAQ driver software ComponentWorks provides a higher level programming interface for building virtual instruments through standard OLE controls and DLLs With ComponentWorks you can use all of the configuration tools resource management utilities and interactive control utilities included with NI DAQ LabVIEW features interactive graphics a state of the art user interface and a powerful graphical programming language The LabVIEW Data Acquisition VI Library a series of VIs for using LabVIEW with National Instruments DAQ hardware is included with LabVIEW The LabVIEW Data Acquisition VI Library is functionally equivalent to the NI DAQ software Chapter 1 Introduction National Instruments Corporation 1 3 PCI DIO 96 User Manual LabWindows CVI features interactive graphics a state of the art user interface and uses the ANSI standard C programming language The LabWindows CVI Data Acquisition Library a series of functions for using LabWindows CVI w
51. gnals with zero two or three lines available for general purpose I O Table 3 2 summarizes the port C signal assignments for each configuration Consult Chapter 6 Programming for register level programming information Note Table 3 2 shows both the port C signal assignments and the terminology correlation between different documentation sources The 82C55A terminology refers to the different 82C55A configurations as modes whereas NI DAQ ComponentWorks LabWindows CVI and LabVIEW documentation refers to them as handshaking and no handshaking These signal assignments are the same for all four 82C55A PPIs Refer to Port Identification in Chapter 6 Programming for more information 83 85 87 89 91 93 95 97 CPA lt 7 0 gt Bidirectional data lines for port A of PPI C CPA7 is the MSB CPA0 the LSB 84 86 88 90 92 94 96 98 DPA lt 7 0 gt Bidirectional data lines for port A of PPI D DPA7 is the MSB DPA0 the LSB Table 3 2 Port C Signal Assignments Configuration Terminology Signal Assignments 82C55A PCI DIO 96 User Manual National Instruments Software APC7 BPC7 CPC7 or DPC7 APC6 BPC6 CPC6 or DPC6 APC5 BPC5 CPC5 or DPC5 APC4 BPC4 CPC4 or DPC4 APC3 BPC3 CPC3 or DPC3 APC2 BPC2 CPC2 or DPC2 APC1 BPC1 CPC1 or DPC1 APC0 BPC0 CPC0 or DPC0 Mode 0 Basic I O No Handshaking I O I O I O I O I O I O I O I O Mode 1 S
52. hows how to configure PPI A for mode 0 input and output Write 8255Cnfg 0x80 Set mode 0 ports A B and C are outputs Write PortA Data Write data to port A Write PortB Data Write data to port B Write PortC Data Write data to port C Write 8255Cnfg 0x90 Set mode 0 port A is Input ports B and C are outputs Write PortB Data Write data to port B Read PortA Read data from port A Mode 1 Strobed Input Note For mode 1 examples you must configure the don t care bits appropriately in the control word if you want to use the other ports in combination with the example In mode 1 the digital I O bits are divided into two groups group A and group B Each of these groups contains one 8 bit port and one 4 bit control data port The 8 bit port can be either an input or an output port and the 4 bit port is used for control and status information for the 8 bit port The transfer of data is synchronized by handshaking signals in the 4 bit port The control word written to the Configuration Register to configure port A for input in mode 1 is shown in Figure 6 1 You can use bits PC6 and PC7 of port C as extra input or output lines Figure 6 1 Control Word to Configure Port A for Mode 1 Input Port C bits PC6 and PC7 1 Input 0 Output D7 D6 D5 D4 D3 D2 D1 D0 1 0 1 1 1 0 X X X Chapter 6 Programming National Instruments Corporation 6 11 PCI DIO 96 User Manual Figure 6 2 shows the c
53. ices there are two registers that select which onboard signals are capable of generating interrupts There are two interrupt signals from each of the four 82C55A devices and two interrupt signals from the 82C53 device Individual enable bits select which of these 10 signals can generate interrupts Also a master enable signal determines whether the board can actually send a request to the computer The configuration bits for these registers are defined in the section Register Description for the Interrupt Control Registers later in this chapter Chapter 5 Register Map and Description PCI DIO 96 User Manual 5 2 National Instruments Corporation Register Map Table 5 1 lists the address map for the PCI DIO 96 Table 5 1 PCI DIO 96 Address Map Register Name Offset Address Hex Size Type 82C55A Register Group PPI A PORTA Register PORTB Register PORTC Register Configuration Register 00 01 02 03 8 bit 8 bit 8 bit 8 bit Read and write Read and write Read and write Write only PPI B PORTA Register PORTB Register PORTC Register Configuration Register 04 05 06 07 8 bit 8 bit 8 bit 8 bit Read and write Read and write Read and write Write only PPI C PORTA Register PORTB Register PORTC Register Configuration Register 08 09 0A 0B 8 bit 8 bit 8 bit 8 bit Read and write Read and write Read and write Write only PPI D PORTA Register PORTB Register PORTC Register Configurati
54. igure 6 10 control word to configure Port B figure 6 11 Port C pin assignments on I O connector figure 6 13 Port C status word bit definitions for input 6 12 to 6 13 programming example 6 13 Mode 1 strobed output 6 13 to 6 16 control word to configure Port A figure 6 14 control word to configure Port B figure 6 14 Port C pin assignments on I O connector figure 6 16 Port C status word bit definitions for output 6 15 to 6 16 programming example 6 16 Mode 2 bidirectional bus 6 16 to 6 19 control word to configure Port A figure 6 17 Port C pin assignments on I O connector 6 19 Port C status word bit definitions 6 18 to 6 19 programming example 6 19 PCI initialization for Macintosh 6 4 to 6 5 developing your own interrupt method 6 5 to 6 6 performing simple accesses 6 5 port identification 6 6 to 6 7 programming options 6 4 to 6 6 using NI DAQ and driver toolkit 6 4 to 6 5 PCI initialization for PC 6 3 to 6 4 software programming choices 1 2 to 1 4 R RD signal description table 3 9 Mode 1 input timing figure 3 10 Mode 2 bidirectional timing figure 3 12 register level programming See also programming Index National Instruments Corporation I 7 PCI DIO 96 User Manual using other software instead 1 4 registers 82C53 Register Group address map table 5 3 control word format figure 5 6 Interrupt Clear Register 5 10 Interrupt Control Register 1 5 7 to 5 8 Inter
55. ion You can access Fax on Demand from a touch tone telephone at 512 418 1111 You can submit technical support questions to the applications engineering team through e mail at the Internet address listed below Remember to include your name address and phone number so we can contact you with solutions and suggestions support natinst com Fax and Telephone Support National Instruments has branch offices all over the world Use the list below to find the technical support number for your country If there is no National Instruments office in your country contact the source from which you purchased your software to obtain support Telephone Fax Australia 03 9879 5166 03 9879 6277 Austria 0662 45 79 90 0 0662 45 79 90 19 Belgium 02 757 00 20 02 757 03 11 Canada Ontario 905 785 0085 905 785 0086 Canada Quebec 514 694 8521 514 694 4399 Denmark 45 76 26 00 45 76 26 02 Finland 09 527 2321 09 502 2930 France 01 48 14 24 24 01 48 14 24 14 Germany 089 741 31 30 089 714 60 35 Hong Kong 2645 3186 2686 8505 Israel 03 5734815 03 5734816 Italy 02 413091 02 41309215 Japan 03 5472 2970 03 5472 2977 Korea 02 596 7456 02 596 7455 Mexico 5 520 2635 5 520 3282 Netherlands 0348 433466 0348 430673 Norway 32 84 84 00 32 84 86 00 Singapore 2265886 2265887 Spain 91 640 0085 91 640 0533 Sweden 08 730 49 70 08 730 43 70 Switzerland 056 200 51 51 056 200 51 55 Taiwan 02 377 1200 02 737 4644 U K 01635 5235
56. it Mode 1 strobed input 6 12 Mode 1 strobed output 6 15 INTEN bit 5 9 interrupt control circuitry block diagram 4 4 theory of operation 4 3 Interrupt Control Register Group address map table 5 3 Interrupt Clear Register 5 10 Interrupt Control Register 1 5 7 to 5 8 Interrupt Control Register 2 5 9 interrupt generation developing your own driver 6 5 to 6 6 simple access with Get_DAQ_device_Info 6 5 using NI DAQ software 6 4 to 6 5 interrupt handling 6 20 to 6 21 82C53 programming example 6 22 to 6 23 82C55A programming examples 6 20 to 6 21 INTR signal description table 3 9 Mode 1 input timing figure 3 10 Mode 1 output timing figure 3 11 Mode 2 bidirectional timing figure 3 12 INTRA bit Mode 1 strobed input 6 12 Mode 1 strobed output 6 15 Mode 2 bidirectional bus 6 18 INTRB bit Mode 1 strobed input 6 12 Mode 1 strobed output 6 15 I O bit Mode 1 strobed input 6 12 Index PCI DIO 96 User Manual I 4 National Instruments Corporation Mode 1 strobed output 6 15 Mode 2 bidirectional bus 6 19 I O connector cable assembly connector pinouts figure pins 1 through 50 3 2 pins 51 through 100 3 3 digital I O connector pin assignments figure 3 2 to 3 3 exceeding maximum ratings warning 3 1 Port C pin assignments Mode 1 input figure 6 13 Mode 1 output figure 6 16 Mode 2 bidirectional bus figure 6 19 signal connection descriptions table 3 4 to 3 5 L LabVIEW applicati
57. ith National Instruments DAQ hardware is included with the NI DAQ software kit The LabWindows CVI Data Acquisition Library is functionally equivalent to the NI DAQ software Using ComponentWorks LabVIEW or LabWindows CVI software will greatly reduce the development time for your data acquisition and control application NI DAQ Driver Software The NI DAQ driver software is included at no charge with all National Instruments DAQ hardware NI DAQ is not included with SCXI or accessory products except the SCXI 1200 NI DAQ has an extensive library of functions that you can call from your application programming environment These functions include routines for analog input A D conversion buffered data acquisition high speed A D conversion analog output D A conversion waveform generation timed D A conversion digital I O counter timer operations SCXI RTSI self calibration messaging and acquiring data to memory NI DAQ has both high level DAQ I O functions for maximum ease of use and low level DAQ I O functions for maximum flexibility and performance Examples of high level functions are streaming data to disk or acquiring a certain number of data points An example of a low level function is writing directly to registers on the DAQ device NI DAQ does not sacrifice the performance of National Instruments DAQ devices because it lets multiple devices operate at their peak performance NI DAQ also internally addresses many of the
58. l Instruments Corporation Programming Considerations for the 82C53 A general overview of the 82C53 and how it is configured on the PCI DIO 96 follows General Information The 82C53 contains three counter timers each of which can operate in one of six different modes However only counter 0 and counter 1 are configured for operation counter 2 is not connected nor is it available on the external I O connector In addition counter 0 and counter 1 are wired to the interrupt circuitry in such a way that only four of the modes are available for use The source for counter 0 is a 2 MHz clock If you use counter 0 to interrupt the computer configure the counter for rate generation or mode 2 If you use counter 1 to interrupt the computer counter 0 is a frequency scale that feeds the source input for counter 1 In this case configure both counters for rate generation or mode 2 To determine the time between pulses generated by counter 0 multiply the load value by 500 ns 1 2 MHz To determine the time between pulses generated by counter 1 multiply the load value by the time between pulses of counter 0 A sample configuration procedure is presented in the next section Interrupt Programming Example The following example shows how to set up counter 0 to generate interrupts Write IREG1 0x00 Disable all 82C55A interrupts Write IREG2 0x00 Disable counter interrupts Write CntrCnfg 0x34 Set counter 0 to mode 2 Write IREG2 0
59. mode 2 interrupts for PPI C set CIRQ0 to interrupt the computer To interrupt the computer using one of the 82C53 counter outputs program the counters as described in the Interrupt Programming Example section later in this chapter You can use external signals to interrupt the PCI DIO 96 when port A or port B is in mode 0 and the low nibble of port C is configured for input If port A is in mode 0 use PC3 to generate an interrupt if port B is in mode 0 use PC0 to generate an interrupt After you have configured the selected 82C55A you must set the corresponding interrupt enable bit in Interrupt Control Register 1 If you are using PC3 set xIRQ0 if you are using PC0 set xIRQ1 where x is the letter corresponding to the PPI you want to generate interrupts A D When the external signal becomes logic high an interrupt request occurs To disable the external interrupt the interrupt service routine that you have written should acknowledge the interrupt and write the interrupt clear register Interrupt Programming Examples for the 82C55A The following examples show the process required to enable interrupts for several different operating modes You must write and install the interrupt service routine in order to process the interrupt and gain any useful knowledge from it You should clear all interrupt sources and interrupt enable bits first to disable unwanted interrupts Chapter 6 Programming National Instruments Corporation 6
60. n 6 17 PCI DIO 96 User Manual Figure 6 7 Control Word to Configure Port A as Mode 2 Bidirectional Data Bus During a mode 2 data transfer you can obtain the status of the handshaking lines and interrupt signals by reading port C The port C status word bit definitions for a mode 2 transfer are shown as follows Port C PC lt 2 0 gt 1 Input 0 Output D7 D6 D5 D4 D3 D2 D1 D0 1 1 X X X 1 0 1 0 1 0 Port B 1 Input 0 Output Group B Mode 0 Mode 0 1 Mode 1 Chapter 6 Programming PCI DIO 96 User Manual 6 18 National Instruments Corporation Port C Status Word Bit Definitions for Bidirectional Data Path Port A Only Address Base address 03 hex for PPI A Base address 07 hex for PPI B Base address 0B hex for PPI C Base address 0F hex for PPI D Type Read and write Word Size 8 bit Bit Map Bit Name Description 7 OBFA Output Buffer for Port A A low setting indicates that the CPU has written data to port A 6 INTE1 Interrupt Enable Bit for Port A Output Interrupts Setting this bit enables output interrupts from port A of the 82C55A Control this bit by setting resetting PC6 5 IBFA Input Buffer Acknowledgment for Port A A high setting indicates that data has been loaded into the input latch of port A 4 INTE2 Interrupt Enable Bit for Port A Input Interrupts Setting this bit enables input interrupts from port A of the 82C55A Control this
61. nal Instruments Corporation 3 3 PCI DIO 96 User Manual Figure 3 2 PCI DIO 96 Cable Assembly Connector Pinout for Pins 51 through 100 with the R1005050 Ribbon Cable 5 V CPA0 CPA1 CPA2 CPA3 CPA4 CPA5 CPA6 CPA7 CPB0 CPB1 CPB2 CPB3 CPB4 CPB5 CPB6 CPB7 CPC0 CPC1 CPC2 CPC3 CPC4 CPC5 CPC6 CPC7 GND DPA1 DPA2 DPA4 DPA5 DPA6 DPA7 DPA0 DPA3 DPB0 DPB1 DPB2 DPB3 DPB4 DPB5 DPB6 DPB7 DPC0 DPC1 DPC2 DPC3 DPC4 DPC5 DPC6 DPC7 99 100 97 98 95 96 93 94 91 92 89 90 87 88 85 86 83 84 81 82 79 80 77 78 75 76 73 74 71 72 69 70 67 68 65 66 63 64 61 62 59 60 57 58 55 56 53 54 51 52 Chapter 3 Signal Connections PCI DIO 96 User Manual 3 4 National Instruments Corporation Table 3 1 lists the signal descriptions for the PCI DIO 96 I O connector pins Table 3 1 Signal Descriptions for PCI DIO 96 I O Connector Pins Pin Signal Name Description 1 3 5 7 9 11 13 15 APC lt 7 0 gt Bidirectional data lines for port C of PPI A APC7 is the MSB APC0 the LSB 2 4 6 8 10 12 14 16 BPC lt 7 0 gt Bidirectional data lines for port C of PPI B BPC7 is the MSB BPC0 the LSB 17 19 21 23 25 27 29 31 APB lt 7 0 gt Bidirectional data lines for port B of PPI A APB7 is the MSB APB0 the LSB
62. nder 1 MB in the memory map which makes communicating with the board simpler PCI BIOS read and write calls are used to accomplish this Use the pseudocode in this section to re map the board below 1 MB If you choose not to re map the board you must still perform Steps 4 and 5 All values in this example are 32 bits 1 Write the address to which you want to re map the MITE to PCI configuration space offset 0x10 BAR0 2 Write the value 0x0000aeae to offset 0x340 from the new MITE address 3 Write the address to which you want to re map the board to PCI configuration space offset 0x14 BAR1 1 You can obtain more information on PCI BIOS calls from the PCI SIG on the World Wide Web Chapter 6 Programming PCI DIO 96 User Manual 6 4 National Instruments Corporation 4 Create the window data value by masking the new board address window data value 0xffffff00 and new board address or 0x00000080 If you are not remapping the board then the new board address is the value in BAR1 5 Write the window data value to offset 0xc0 from the new MITE address If you are not remapping the board then the new MITE address is the value in BAR0 The following pseudocode re maps the MITE to memory address 0xd0000 and the board to memory address 0xd1000 CWrite 0x10 0x000d0000 Write 0xd0340 0x0000aeae CWrite 0x14 0x000d1000 Write 0xd00c0 0x000d1080 The new base address for the PCI DIO 96 would now be 0xd10
63. ngs 1 Turn off your computer 2 Remove the top cover or access port to the I O channel 3 Remove the expansion slot cover on the back panel of the computer 4 Insert the PCI DIO 96 in an unused 5 V PCI slot The fit may be tight but do not force the board into place 5 Screw the PCI DIO 96 mounting bracket to the back panel rail of the computer or use the slot side tabs if available to secure the PCI DIO 96 in place 6 Replace the computer cover The PCI DIO 96 board is installed You are now ready to configure your hardware Chapter 2 Installation and Con guration PCI DIO 96 User Manual 2 2 National Instruments Corporation Board Configuration The PCI DIO 96 is completely software configurable The PCI DIO 96 is fully compliant with the PCI Local Bus Specification Revision 2 0 Therefore all board resources are automatically allocated by the PCI system including the base address and interrupt level The base address for the PCI DIO 96 is mapped into PCI memory space You do not need to perform any configuration steps after the system powers up National Instruments Corporation 3 1 PCI DIO 96 User Manual Chapter3 Signal Connections This chapter describes how to make input and output signal connections to your PCI DIO 96 via the board I O connector I O Connector The I O connector for the PCI DIO 96 has 100 pins that you can connect to 50 pin accessories with the R1005050 cable War
64. ning Connections that exceed any of the maximum ratings of input or output signals on the PCI DIO 96 can damage the PCI DIO 96 board and your computer The description of each signal in this chapter includes information about maximum input ratings National Instruments is NOT liable for any damages resulting from signal connections that exceed these maximum ratings I O Connector Pin Descriptions Figures 3 1 and 3 2 show the pin assignments for the PCI DIO 96 digital I O connector using the R1005050 ribbon cable See Table 3 1 for descriptions of each pin on the I O connector Chapter 3 Signal Connections PCI DIO 96 User Manual 3 2 National Instruments Corporation Figure 3 1 PCI DIO 96 Cable Assembly Connector Pinout for Pins 1 through 50 with the R1005050 Ribbon Cable 5 V APA0 APA1 APA2 APA3 APA4 APA5 APA6 APA7 APB0 APB1 APB2 APB3 APB4 APB5 APB6 APB7 APC0 APC1 APC2 APC3 APC4 APC5 APC6 APC7 GND BPA1 BPA2 BPA4 BPA5 BPA6 BPA7 BPA0 BPA3 BPB0 BPB1 BPB2 BPB3 BPB4 BPB5 BPB6 BPB7 BPC0 BPC1 BPC2 BPC3 BPC4 BPC5 BPC6 BPC7 49 50 47 48 45 46 43 44 41 42 39 40 37 38 35 36 33 34 31 32 29 30 27 28 25 26 23 24 21 22 19 20 17 18 15 16 13 14 11 12 9 10 7 8 5 6 3 4 1 2 Chapter 3 Signal Connections Natio
65. nterrupt handler to generate interrupts Writing an interrupt handler is solely left to you and is not discussed in this manual The PCI DIO 96 uses the MITE Application Specific Integrated Circuit ASIC chip as the PCI bus interface National Instruments designed this ASIC specifically for data acquisition In order for the board to operate properly this chip must be configured Ordinarily NI DAQ performs this function but if you are not using NI DAQ then you must configure the MITE ASIC chip The following sections explain how to accomplish this The references made about PCI BIOS1 calls are left to you to implement In order to configure the MITE chip you must first write an algorithm that finds and stores all configuration information about the PCI DIO 96 You can do this by using PCI BIOS calls to search PCI configuration space for the National Instruments vendor ID 0x1093 and PCI DIO 96 device ID 0x0160 If a board is found the algorithm stores all the board s configuration information into a data structure Base Address Register 0 BAR0 corresponds to the base address of the MITE while Base Address Register 1 BAR1 is the base address of the board registers The size of each of these windows is 4 KB Both addresses will most likely be mapped above 1 MB in the memory map This means that in order to communicate with the board you must know how to perform memory cycles to extended memory Information is provided to re map the board u
66. ntrol the driver You can install the driver toolkit by launching the NI DAQ installer choosing the alternate installations option see the installer for help and dragging the toolkit icon to your disk Documentation for the toolkit is included in the toolkit Performing Simple Accesses To perform simple input and output using your PCI board without using the drivers included in NI DAQ or writing your own drivers you can use the Get_DAQ_Device_Info call to do simple accesses with the board If you want to use interrupts you must work directly with the Macintosh Operating System OS and you could inadvertently corrupt portions of NI DAQ Therefore National Instruments recommends this option only if you are not generating interrupts If you need or want to use interrupts either use the driver toolkit mentioned earlier or develop your own method Developing Your Own Interrupt Method National Instruments does not support developing your own interrupt method To do this consult the following documents Designing PCI Cards and Drivers for Power Macintosh Computers Inside Macintosh Devices Inside Macintosh Memory Inside Macintosh Operating System Utilities Inside Macintosh Processes Inside Macintosh Power PC System Software Because NI DAQ has not configured your board you will need to perform the following code sequence to activate the board Using the documents listed above you must retrie
67. nts Corporation 1 5 PCI DIO 96 User Manual Optional Equipment National Instruments offers a variety of products to use with your PCI DIO 96 board including cables connector blocks and other accessories as follows Cables and cable assemblies Connector blocks 50 pin screw terminals SCXI modules and accessories for isolating amplifying exciting and multiplexing signals for relays and analog output With SCXI you can condition and acquire up to 3 072 channels Low channel count signal conditioning modules boards and accessories including conditioning for strain gauges and RTDs simultaneous sample and hold and relays For more information about optional equipment available from National Instruments refer to your National Instruments catalog or call the office nearest you Custom Cabling National Instruments offers cables and accessories for you to prototype your application or to use if you frequently change board interconnections If you want to develop your own cable the mating connector for the PCI DIO 96 is a 100 position right angle receptacle without board locks Recommended manufacturer part numbers for this mating connector are as follows AMP Corporation part number 749076 9 Honda Corporation part number PCS XE100LFD HS Chapter 1 Introduction PCI DIO 96 User Manual 1 6 National Instruments Corporation Unpacking Your PCI DIO 96 board is shipped in an antis
68. on Register 0C 0D 0E 0F 8 bit 8 bit 8 bit 8 bit Read and write Read and write Read and write Write only Chapter 5 Register Map and Description National Instruments Corporation 5 3 PCI DIO 96 User Manual Register Descriptions The register descriptions for the devices used on the PCI DIO 96 are given on the pages that follow The register description bits labeled with an X indicate don t care bits Always write a 0 to these bits Register Description Format The remainder of this section discusses each of the PCI DIO 96 registers in the order shown in Table 5 1 Each register group is introduced followed by a detailed bit description of each register Individual register descriptions give the address in hexadecimal type data size and bit map of the register followed by a description of each bit The register bit map shows a diagram of the register with the MSB bit 7 shown on the left and the LSB bit 0 shown on the right A rectangle with the bit name inside represents each bit The bit map for the Interrupt Clear Register states not applicable no bits used The data is ignored when you write to this register therefore any bit pattern will suffice Register Description for the 82C55A Figure 5 1 shows the two control word formats used to completely program the 82C55A The control word flag bit 7 determines which control word format is being programmed When the control word flag 82C53 Register Gro
69. on software 1 2 LabWindows CVI applications software 1 3 M manual See documentation MITE Application specific Integrated Circuit ASIC chip 6 3 Mode 0 basic I O port configurations table 6 9 programming considerations 6 7 to 6 8 programming example 6 10 Mode 1 input interrupt programming example 6 21 overview and features 6 8 strobed input programming considerations 6 10 to 6 13 control word to configure Port A figure 6 10 control word to configure Port B figure 6 11 Port C pin assignments on I O connector figure 6 13 Port C status word bit definitions for input 6 12 to 6 13 programming example 6 13 timing figure 3 10 Mode 1 output interrupt programming example 6 21 overview and features 6 8 strobed output programming considerations 6 13 to 6 16 control word to configure Port A figure 6 14 control word to configure Port B figure 6 14 Port C pin assignments on I O connector figure 6 16 Port C status word bit definitions for output 6 15 to 6 16 programming example 6 16 timing figure 3 11 Mode 2 bidirectional bus interrupt programming example 6 21 programming considerations 6 16 to 6 19 control word to configure Port A figure 6 17 Port C pin assignments on I O connector 6 19 Port C status word bit definitions 6 18 to 6 19 programming example 6 19 timing figure 3 12 N NI DAQ driver software 1 3 to 1 4 interrupt generation developing your own driver 6 5 simpl
70. ontrol Circuitry Two software controlled registers determine which devices if any generate interrupts Each of the four 82C55A devices has two interrupt lines PC3 and PC0 connected to the interrupt circuitry The 82C53 device has two of its three counter outputs connected to the interrupt circuitry Any of these 10 signals can interrupt the computer if the interrupt circuitry is enabled and the corresponding enable bit is set See Chapter 5 Register Map and Description for more information Normally the handshaking circuitry controls PC3 and or PC0 of the 82C55A devices however you can configure either of these two lines for input and then use them as external interrupts An interrupt occurs on the signal line low to high transition Refer to Chapter 5 Register Map and Description Chapter 6 Programming Appendix B MSM82C55A Data Sheet or Appendix C MSM82C53 Data Sheet for more detailed information concerning interrupts Chapter 4 Theory of Operation PCI DIO 96 User Manual 4 4 National Instruments Corporation The block diagram in Figure 4 2 illustrates the PCI DIO 96 interrupt control circuitry Figure 4 2 PCI DIO 96 Interrupt Control Circuitry Block Diagram CLK0 GATE0 OUT0 CLK1 GATE1 OUT1 CLK2 GATE2 OUT2 2 MHz 5 V 5 V 82C55A PPI A 82C55A PPI B 82C55A PPI D 82C55A PPI C PCI Interrupt PC3 PC0 PC3 PC0 PC3 PC0 82C53 Counter Timer PC3 PC0 Interrup
71. ontrol word written to the Configuration Register to configure port B for input in mode 1 Notice that port B does not have extra input or output lines from port C Figure 6 2 Control Word to Configure Port B for Mode 1 Input During a mode 1 data read transfer read port C to obtain the status of the handshaking lines and interrupt signals See the Port C Status Word Bit Definitions for Input Ports A and B Port C Status Word Bit Definitions for Output Ports A and B and Port C Status Word Bit Definitions for Bidirectional Data Path Port A Only sections later in this manual for detailed definitions D7 D6 D5 D4 D3 D2 D1 D0 1 X X X X 1 X 1 Chapter 6 Programming PCI DIO 96 User Manual 6 12 National Instruments Corporation Port C Status Word Bit Definitions for Input Ports A and B Address Base address 03 hex for PPI A Base address 07 hex for PPI B Base address 0B hex for PPI C Base address 0F hex for PPI D Type Read and write Word Size 8 bit Bit Map Bit Name Description 7 6 I O Input Output These bits can be used for general purpose I O when port A is in mode 1 input If these bits are configured for output the port C bit set reset function must be used to manipulate them 5 IBFA Input Buffer Acknowledgment for Port A A high setting indicates that data has been loaded into the input latch for port A 4 INTEA Interrupt Enable Bit for Port A Setting thi
72. peration 4 3 82C53 programming considerations 6 22 to 6 23 general information 6 22 interrupt programming example 6 22 to 6 23 82C53 Register Group address map table 5 3 control word format figure 5 6 Interrupt Clear Register 5 10 Interrupt Control Register 1 5 7 to 5 8 Interrupt Control Register 2 5 9 82C55A Programmable peripheral Interface data sheet B 1 to B 17 theory of operation 4 3 82C55A programming considerations 6 7 to 6 19 Mode 0 basic I O 6 8 to 6 10 configurations table 6 9 programming example 6 10 Mode 1 strobed input 6 10 to 6 13 control word configuration Port A figure 6 10 Port B figure 6 11 Port C pin assignments figure 6 13 Port C status word bit definitions 6 12 to 6 13 programming example 6 13 Mode 1 strobed output 6 13 to 6 16 control word configuration Port A figure 6 14 Port B figure 6 14 Port C pin assignments figure 6 16 Port C status word bit definitions 6 15 to 6 16 programming example 6 16 Mode 2 bidirectional bus 6 16 to 6 19 control word configuration of Port A figure 6 17 Port C pin assignments figure 6 19 Port C status word bit definitions 6 18 to 6 19 programming example 6 19 modes of operation 6 7 to 6 8 Mode 0 6 7 to 6 8 Mode 1 6 8 Mode 2 6 8 single bit set reset feature 6 8 82C55A Register Group address map table 5 2 control word formats figure 5 4 description 5 3 to 5 5 Port C set reset control words table 5 5 A
73. ples into a real application you must know the base memory address for your board To generate and process any interrupts you must write and install an applicable interrupt service routine Note In this chapter all numbers preceded by 0x are hexadecimal Common terms that you will see used in the programming examples are listed below Port A Address of PPI A Port A Register Base Address 0x00 Port B Address of PPI A Port B Register Base Address 0x01 Port C Address of PPI A Port C Register Base Address 0x02 8255Cnfg Address of PPI A Configuration Register Base Address 0x03 Ctr0 Address of 82C53 Counter 0 Register Base Address 0x10 Ctr1 Address of 82C53 Counter 1 Register Base Address 0x11 CntrCnfg Address of 82C53 Configuration Register Base Address 0x13 IREG1 Address of Interrupt Control Register 1 Base Address 0x14 IREG2 Address of Interrupt Control Register 2 Base Address 0x15 Write address data Generic function call for a memory space Write of data to address Read address Generic function call for a memory space Read from address CWrite offset data PCI configuration space write of data to PCI configuration space offset Chapter 6 Programming National Instruments Corporation 6 3 PCI DIO 96 User Manual PCI Initialization for the PC To program at the register level without NI DAQ you must know the PCI DIO 96 base memory address and install an i
74. ptions and explains how to unpack the PCI DIO 96 Chapter 2 Installation and Configuration describes how to install and configure your PCI DIO 96 board Chapter 3 Signal Connections describes how to make input and output signal connections to your PCI DIO 96 via the board I O connector Chapter 4 Theory of Operation contains a functional overview of the PCI DIO 96 and explains the operation of each functional unit comprising the PCI DIO 96 Chapter 5 Register Map and Description describes in detail the address and function of each PCI DIO 96 register Chapter 6 Programming contains instructions on how to operate the PCI DIO 96 circuitry and examples of the programming steps necessary to execute an operation Appendix A Specifications lists the specifications of the PCI DIO 96 About This Manual PCI DIO 96 User Manual x National Instruments Corporation Appendix B MSM82C55A Data Sheet contains a manufacturer data sheet for the MSM82C55A CMOS programmable peripheral interface OKI Semiconductor This device is used on the PCI DIO 96 Appendix C MSM82C53 Data Sheet contains a manufacturer data sheet for the MSM82C53 CMOS programmable interval timer OKI Semiconductor This timer is used on the PCI DIO 96 Appendix D Customer Communication contains forms you can
75. put high voltage Iout 40 A Iout 2 5 mA 4 2 V 3 7 V 0 4 V Appendix A Speci cations PCI DIO 96 User Manual A 2 National Instruments Corporation Transfer rate1 1 word 8 bits absolute max Handshaking 3 wire two port Data transfers Interrupts programmed I O Bus Interface Type Slave Power Requirement Power consumption 400 mA at 5 VDC 5 Power available at I O connector 4 65 to 5 25 V fused at 1 A Physical Dimensions 13 7 x 10 7 cm 5 4 x 4 2 in I O connector 100 pin female 0 050 series D type Environment Operating temperature 0 to 70 C Storage temperature 55 to 150 C Relative humidity 5 to 90 noncondensing 1 Transfer rate depends on the computer and software These tests were made using either a Power Macintosh 8500 120 MHz computer or a Pentium 133 MHz computer Language Macintosh PC Ca 900 kHz 845 kHz LabVIEWb 2 8 kHz 3 8 kHz a C routine is used to write read data to from a port b LabVIEW VI is used to write read data to from a port National Instruments Corporation B 1 PCI DIO 96 U
76. read this manual Application Note 025 Field Wiring and Noise Considerations for Analog Signals The following documents also contain information that you may find helpful as you read this manual Your computer s technical reference manual PCI Local Bus Specification Revision 2 0 Customer Communication National Instruments wants to receive your comments on our products and manuals We are interested in the applications you develop with our products and we want to help if you have problems with them To make it easy for you to contact us this manual contains comment and configuration forms for you to complete These forms are in Appendix D Customer Communication at the end of this manual National Instruments Corporation 1 1 PCI DIO 96 User Manual Chapter1 Introduction This chapter describes the PCI DIO 96 lists what you need to get started software programming choices optional equipment describes custom cabling options and explains how to unpack the PCI DIO 96 About the PCI DIO 96 Thank you for purchasing a National Instruments PCI DIO 96 board The PCI DIO 96 is a 96 bit parallel digital I O interface for PCI bus computers Four 82C55A programmable peripheral interface PPI chips control the 96 bits of TTL compatible digital I O The four OKI Semiconductor 82C55A PPI chips can operate in unidirectional mode bidirectional mode or handshaking mode and can generate interrupt requests to your
77. riting to and reading from registers on the board You will find a listing of these registers in Chapter 5 Register Map and Description of this manual PCl Local Bus The PCI DIO 96 is fully compatible with the PCI Local Bus Specification Version 2 1 from the PCI Special Interest Group SIG The PCI Local Bus is a high performance 32 bit bus with multiplexed address and data lines The PCI system arbitrates and assigns resources through software freeing you from manually setting switches and jumpers Bus related resources must be configured before you attempt to execute a register level program This entails assigning a base address and interrupt channel to the PCI DIO 96 You can use PCI local bus boards on both PC compatible and Macintosh computers However due to the differences in those systems configuration will be different and performed through different versions of NI DAQ Programming Examples The programming examples in this section demonstrate the programming steps needed to perform several different operations The instructions are language independent that is they tell you to read or write a given register or to detect if a given bit is set or cleared without presenting the actual code The information given is not intended to be used without proper modification in a practical solution Chapter 6 Programming PCI DIO 96 User Manual 6 2 National Instruments Corporation Before you can implement any of the exam
78. rks and contain application hints Your DAQ hardware user manuals These manuals have detailed information about the DAQ hardware that plugs into or is connected to your computer Use these manuals for hardware installation and configuration instructions specification information about your DAQ hardware and application hints Software documentation Examples of software documentation you may have are the LabVIEW LabWindows CVI or ComponentWorks documentation sets and the NI DAQ documentation After you set up your hardware system use either the application software or the NI DAQ documentation to help you write your application If you have a large and complicated system it is worthwhile to look through the software documentation before you configure your hardware About This Manual PCI DIO 96 User Manual xii National Instruments Corporation Accessory installation guides or manuals If you are using accessory products read the terminal block and cable assembly installation guides or accessory board user manuals They explain how to physically connect the relevant pieces of the system Consult these guides when you are making your connections SCXI Chassis User Manual If you are using SCXI read these manuals for maintenance information on the chassis and installation instructions Related Documentation The following National Instruments document contains information that you may find helpful as you
79. rupt Control Register 2 5 9 82C55A Register Group address map table 5 2 control word formats figure 5 4 description 5 3 to 5 5 Port C set reset control words table 5 5 address map table 5 2 to 5 3 correlation between mode and handshaking terminology table 3 5 to 3 6 overview 5 1 reset feature 6 8 S signal connections digital I O signal connections 3 6 to 3 7 block diagram 3 7 I O connector cable assembly connector pinouts figure pins 1 through 50 3 2 pins 51 through 100 3 3 digital I O connector pin assignments figure 3 2 to 3 3 exceeding maximum ratings warning 3 1 signal connection descriptions table 3 4 to 3 5 Port C pin assignments 3 5 to 3 6 power connections 3 8 timing specifications 3 8 to 3 12 Mode 1 input timing 3 10 Mode 1 output timing 3 11 Mode 2 bidirectional timing 3 12 signal names used in timing diagrams table 3 8 to 3 9 simple accesses using Get_DAQ_device_Info 6 5 single bit set reset feature 6 8 software installation 2 1 software programming choices 1 2 to 1 4 ComponentWorks 1 2 LabVIEW application software 1 2 LabWindows CVI 1 3 NI DAQ driver software 1 3 to 1 4 register level programming 1 4 specifications bus interface A 2 digital I O A 1 to A 2 environment A 2 physical A 2 power requirement A 2 STB signal description table 3 8 Mode 1 input timing figure 3 10 Mode 2 bidirectional timing figure 3 12 T technical support D 1
80. s bit enables interrupts from port A of the 82C55A Control this bit by setting resetting PC4 3 INTRA Interrupt Request Status for Port A When INTEA and IBFA are high this bit is high indicating that an interrupt request is pending for port A 2 INTEB Interrupt Enable Bit for Port B Setting this bit enables interrupts from port B of the 82C55A Control this bit by setting resetting PC2 1 IBFB Input Buffer Acknowledgment for Port B A high setting indicates that data has been loaded into the input latch for port B 0 INTRB Interrupt Request Status for Port B When INTEB and IBFB are high this bit is high indicating that an interrupt request is pending for port B 7 6 5 4 3 2 1 0 I O I O IBFA INTEA INTRA INTEB IBFB INTRB Chapter 6 Programming National Instruments Corporation 6 13 PCI DIO 96 User Manual At the digital I O connector port C has the pin assignments shown in Figure 6 3 when in mode 1 input Notice that the status of STBA and the status of STBB are not included in the port C status word Figure 6 3 Port C Pin Assignments on I O Connector when Port C Configured for Mode 1 Input Mode 1 Strobed Input Programming Example The following example shows how to configure PPI A for mode 1 input Write 8255Cnfg 0xB0 Set mode 1 port A is an input Loop until IBFA PC5 is set indicating that data is available in port A to be read Read PortA Now read the data from port A
81. ser Manual AppendixB MSM82C55A Data Sheet This appendix contains a manufacturer data sheet for the MSM82C55A CMOS programmable peripheral interface OKI Semiconductor This interface is used on the PCI DIO 96 Copyright OKI Semiconductor 1993 Reprinted with permission of copyright owner All rights reserved OKI Semiconductor Microprocessor Data Book 1993 National Instruments Corporation C 1 PCI DIO 96 User Manual AppendixC MSM82C53 Data Sheet This appendix contains a manufacturer data sheet for the MSM82C53 CMOS programmable interval timer OKI Semiconductor This timer is used on the PCI DIO 96 Copyright OKI Semiconductor 1993 Reprinted with permission of copyright owner All rights reserved OKI Semiconductor Microprocessor Data Book 1993 National Instruments Corporation D 1 PCI DIO 96 User Manual AppendixD Customer Communication For your convenience this appendix contains forms to help you gather the information necessary to help us solve your technical problems and a form you can use to comment on the product documentation When you contact us we need the information on the Technical Support Form and the configuration form if your manual contains one about your system configuration to answer your questions as quickly as possible National Instruments has technical assistance through electronic fax and telephone systems to quickly provide the information you need Our electronic services
82. t Control Circuitry PCI DIO 96 Interrupt Control Registers National Instruments Corporation 5 1 PCI DIO 96 User Manual Chapter5 Register Map and Description This chapter describes in detail the address and function of each PCI DIO 96 register Note If you plan to use a programming software package such as ComponentWorks LabVIEW LabWindows CVI or NI DAQ with your PCI DIO 96 board you need not read this chapter Introduction The three 8 bit ports of the 82C55A are divided into two groups of 12 signals group A and group B One 8 bit control word selects the mode of operation for each group The group A control bits configure port A A lt 7 0 gt and the upper 4 bits nibble of port C C lt 7 4 gt The group B control bits configure port B B lt 7 0 gt and the lower nibble of port C C lt 3 0 gt These configuration bits are defined in the section Register Description for the 82C55A later in this chapter Because there are four 82C55A PPI devices on the board they are referenced as PPI A PPI B PPI C and PPI D when differentiation is required The three 16 bit counters of the 82C53 are accessed through individual data ports and controlled by one 8 bit control word The control word selects how the counter data ports are accessed and what mode the counter uses The configuration bits are defined in the section Register Description for the 82C53 later in this chapter In addition to the 82C55A and 82C53 dev
83. tatic package to prevent electrostatic damage to the board Electrostatic discharge can damage several components on the board To avoid such damage in handling the board take the following precautions Ground yourself via a grounding strap or by holding a grounded object Touch the antistatic package to a metal part of your computer chassis before removing the board from the package Remove the board from the package and inspect the board for loose components or any other sign of damage Notify National Instruments if the board appears damaged in any way Do not install a damaged board into your computer Never touch the exposed pins of connectors National Instruments Corporation 2 1 PCI DIO 96 User Manual Chapter2 Installation and Configuration This chapter describes how to install and configure your PCI DIO 96 board Software Installation If you are using NI DAQ ComponentWorks LabWindows CVI or LabVIEW refer to the installation instructions in your documentation to install and configure your software If you are a register level programmer refer to Chapter 5 Register Map and Description and Chapter 6 Programming of this manual Hardware Installation The PCI DIO 96 can be installed in any unused PCI expansion slot in your computer The following are general installation instructions Consult your computer user manual or technical reference manual for specific instructions and warni
84. ter STB 1 50 T6 RD 0 to INTR 0 200 T7 RD 1 to IBF 0 150 All timing values are in nanoseconds DATA RD INTR IBF STB T1 T2 T4 T7 T6 T3 T5 Chapter 3 Signal Connections National Instruments Corporation 3 11 PCI DIO 96 User Manual Mode 1 Output Timing The timing specifications for an output transfer in mode 1 are as follows Figure 3 5 Timing Specifications for Mode 1 Output Transfer Name Description Minimum Maximum T1 WR 0 to INTR 0 250 T2 WR 1 to Output 200 T3 WR 1 to OBF 0 150 T4 ACK 0 to OBF 1 150 T5 ACK Pulse Width 100 T6 ACK 1 to INTR 1 150 All timing values are in nanoseconds WR OBF INTR ACK DATA T1 T2 T3 T4 T5 T6 Chapter 3 Signal Connections PCI DIO 96 User Manual 3 12 National Instruments Corporation Mode 2 Bidirectional Timing The timing specifications for bidirectional transfers in mode 2 are as follows Figure 3 6 Timing Specifications for Mode 2 Bidirectional Transfer Name Description Minimum Maximum T1 WR 1 to OBF 0 150 T2 Data before STB 1 20 T3 STB Pulse Width 100 T4 STB 0 to IBF 1 150 T5 Data after STB 1 50 T6 ACK 0 to OBF 1 150 T7 ACK Pulse Width 100 T8 ACK 0 to Output 150 T9 ACK 1 to Output Float
85. the interrupt INTRA to the computer regardless of the setting of INTEN 5 CIRQ1 PPI C Port B Interrupt Enable Bit If this bit and the INTEN bit in Interrupt Control Register 2 are both set PPI C sends an interrupt INTRB to the computer If this bit is cleared PPI C does not send the interrupt INTRB to the computer regardless of the setting of INTEN 4 CIRQ0 PPI C Port A Interrupt Enable Bit If this bit and the INTEN bit in Interrupt Control Register 2 are both set PPI C sends an interrupt INTRA to the computer If this bit is cleared PPI C does not send the interrupt INTRA to the computer regardless of the setting of INTEN 7 6 5 4 3 2 1 0 DIRQ1 DIRQ0 CIRQ1 CIRQ0 BIRQ1 BIRQ0 AIRQ1 AIRQ0 Chapter 5 Register Map and Description PCI DIO 96 User Manual 5 8 National Instruments Corporation Bit Name Description Continued 3 BIRQ1 PPI B Port B Interrupt Enable Bit If this bit and the INTEN bit in Interrupt Control Register 2 are both set PPI B sends an interrupt INTRB to the computer If this bit is cleared PPI B does not send the interrupt INTRB to the computer regardless of the setting of INTEN 2 BIRQ0 PPI B Port A Interrupt Enable Bit If this bit and the INTEN bit in Interrupt Control Register 2 are both set PPI B sends an interrupt INTRA to the computer If this bit is cleared PPI B does not send the interrupt INTRA to the computer regardless of the setting of INTEN 1
86. trobed Input Handshaking I O I O IBFA STBA INTRA STBB IBFBB INTRB Table 3 1 Signal Descriptions for PCI DIO 96 I O Connector Pins Continued Pin Signal Name Description Chapter 3 Signal Connections PCI DIO 96 User Manual 3 6 National Instruments Corporation Digital I O Signal Connections Pins 1 through 48 and pins 51 through 98 of the I O connector are digital I O signal pins The following specifications and ratings apply to the digital I O lines Absolute maximum voltage rating 0 5 to 5 5 V with respect to GND Digital input specifications referenced to GND Digital output specifications referenced to GND Mode 1 Strobed Output Handshaking OBFA ACKA I O I O INTRA ACKB OBFB INTRB Mode 2 Bidirectional Bus Handshaking OBFA ACKA IBFA STBA INTRA I O I O I O Indicates that the signal is active low Subscripts A and B denote port A or port B handshaking signals Input logic high voltage 2 2 V minimum 5 3 V maximum Input logic low voltage 0 3 V minimum 0 8 V maximum Maximum input current 0 lt Vin lt 5 V 1 A minimum 1 A maximum Output logic high voltage at 3 7 V minimum Iout 2 5 mA Output logic low voltage 0 4 V maximum at Iout 2 5 mA Table 3 2 Port C Signal Assignments Continued Configuration Terminology Signal Assignments 82C55A PCI DIO 96 User Manual
87. ts as a frequency scaler for counter 1 which generates the interrupt If CTR1 is cleared the output from counter 0 of the 82C53 is connected to the interrupt request circuitry In this mode counter 0 generates the interrupt For more information see the section Interrupt Programming Example for the 82C53 in Chapter 6 Programming 7 6 5 4 3 2 1 0 X X X X X INTEN CTRIRQ CTR1 Chapter 5 Register Map and Description PCI DIO 96 User Manual 5 10 National Instruments Corporation Interrupt Clear Register The interrupt clear register has no bits associated with it Use this register to reset the state of the interrupt request signal once the interrupt routine has been entered To clear the interrupt perform an 8 bit write to this register address the data is irrelevant Address Base address 16 hex Type Write only Word Size 8 bit Bit Map Bit Name Description 7 0 X Don t care bit 7 6 5 4 3 2 1 0 X X X X X X X X National Instruments Corporation 6 1 PCI DIO 96 User Manual Chapter6 Programming This chapter contains instructions on how to operate the PCI DIO 96 circuitry and examples of the programming steps necessary to execute an operation If you are not using NI DAQ you must first initialize your board The initialization steps are unique for PC and Macintosh users so refer to the section pertaining to your platform Programming the PCI DIO 96 involves w
88. up PORTA Register PORTB Register PORTC Register Configuration Register 10 11 12 13 8 bit 8 bit 8 bit 8 bit Read and write Read and write Read and write Write only Interrupt Control Register Group Register 1 Register 2 Interrupt Clear Register 14 15 16 8 bit 8 bit 8 bit Write only Write only Write only Table 5 1 PCI DIO 96 Address Map Continued Register Name Offset Address Hex Size Type Chapter 5 Register Map and Description PCI DIO 96 User Manual 5 4 National Instruments Corporation is 1 bits 6 through 0 select the I O characteristics of the 82C55A ports These bits also select the mode in which the ports are operating that is mode 0 mode 1 or mode 2 When the control word flag is 0 bits 3 through 0 select the bit set reset format of port C Figure 5 1 Control Word Formats for the 82C55A D7 D6 D5 D4 D3 D2 D1 D0 Group A Group B Mode Selection 00 Mode 0 01 Mode 1 1X Mode 2 Control Word Flag 1 Mode Set Port A 1 Input 0 Output Port C high nibble 1 Input 0 Output Port C low nibble 1 Input 0 Output Port B 1 Input 0 Output Mode Selection 0 Mode 0 1 Mode 1 a Control Word Flag Mode Set bit 7 1 D7 D6 D5 D4 D3 D2 D1 D0 Control Word Flag 0 Bit Set Reset Unused Bit Set Reset 1 Set 0 Reset Bit Select 000 001 010 111 b Control Word Flag Bit Set Reset bit 7 0
89. upt lines from each of the 82C55A devices The other register has a master interrupt enable bit and two bits for the timed interrupt circuitry Of the latter two bits one bit enables counter interrupts while the other selects counter 0 or counter 1 The bit maps and signal definitions are listed in this chapter D7 D6 D5 D4 D3 D2 D1 D0 Counter Select 00 Counter 0 01 Counter 1 10 Counter 2 11 Illegal Access Mode 00 Latch counter value 01 Access LSB only 10 Access MSB only 11 Access LSB then MSB BCD 1 Count in BCD 0 Count in Binary Mode Select 000 Mode 0 001 Mode 1 010 Mode 2 011 Mode 3 100 Mode 4 101 Mode 5 110 Mode 2 111 Mode 3 Chapter 5 Register Map and Description National Instruments Corporation 5 7 PCI DIO 96 User Manual Interrupt Control Register 1 Address Base address 14 hex Type Write only Word Size 8 bit Bit Map Bit Name Description 7 DIRQ1 PPI D Port B Interrupt Enable Bit If this bit and the INTEN bit in Interrupt Control Register 2 are both set PPI D sends an interrupt INTRB to the computer If this bit is cleared PPI D does not send the interrupt INTRB to the computer regardless of the setting of INTEN 6 DIRQ0 PPI D Port A Interrupt Enable Bit If this bit and the INTEN bit in Interrupt Control Register 2 are both set PPI D sends an interrupt INTRA to the computer If this bit is cleared PPI D does not send
90. ve the deviceNode parameter from the Name Registry include lt pci h gt void configureCard RegEntryIDPtr deviceNode void configureCard RegEntryIDPtrdeviceNode Chapter 6 Programming PCI DIO 96 User Manual 6 6 National Instruments Corporation unsigned short pciCommandRegister unsigned long cardBaseAddress miteBaseAddress configure the i o space of the board such that it is memory mapped ExpMgrConfigReadWord deviceNode LogicalAddress 0x00000004L amp pciCommandRegister ExpMgrConfigWriteWord deviceNode LogicalAddress 0x00000004L pciCommandRegister 0x0002 get the base addresses for the board ExpMgrConfigReadLong deviceNode LogicalAddress 0x00000010L amp miteBaseAddress ExpMgrConfigReadLong deviceNode LogicalAddress 0x00000014L amp cardBaseAddress activate the standard i o window unsigned long miteBaseAddress 0x000000c0L EndianSwap32Bit cardBaseAddress amp 0xffffff00L 0x00000080L return the base address of the board return void cardBaseAddress Port Identification This manual refers to each port as A B and C and each PPI 82C55A as A B C and D NI DAQ and LabVIEW documentation use numbers to identify each port and PPI For example this manual uses PPI A port A to refer to port A of the 82C55A identified as PPI A NI DAQ LabWindows CVI LabVIEW or other application software documentation however r
91. x06 Enable interrupts and select the output from counter 0 Write Ctr0 Data0 Send the least significant byte of the counter data to counter 0 Write Ctr0 Data1 Send the most significant byte of the counter data to counter 0 Chapter 6 Programming National Instruments Corporation 6 23 PCI DIO 96 User Manual The counter begins counting as soon as the most significant byte is written When you are ready to exit your program disable the counter and interrupts as shown below Write Cnfg 0x30 Turn off counter 0 Write IREG2 0x00 Disable all PCI DIO 96 interrupts Note In order for any of the interrupts to be processed you must write and install an interrupt service routine Failure to do so could cause the system to fail upon the interrupt generation National Instruments Corporation A 1 PCI DIO 96 User Manual AppendixA Specifications This appendix lists the specifications for the PCI DIO 96 These specifications are typical at 25 C unless otherwise noted Digital I O Number of channels 96 I O Compatibility TTL Reference voltage 5 V Power on state Inputs High Z pulled up through 100 k Digital logic levels Level Min Max Input low voltage Input high voltage 0 3 V 2 2 V 0 8 V 5 3 V Output low voltage Iout 2 5 mA Out

National Instruments 6508 PCI-DIO-96 User's Manual

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