CM310/CM16310 Quad Serial Port utilityModule User`s Manual
Contents
1. cccccccccesesesesececececececececececececeseseseseeesesesesesesesesesecececseeeececeeececeseceseseseceeeseseeeserenens 24 CHAPTER 4 RETURN POLICY AND WARRANTY e eeeeeeeeee esee seen sanas ee ette eese asse eee te sesn sese see e 25 RETURN POLICY PC 25 LIMITED WARRANTY 26 CM310 CM16310 Quad Serial utilityModule 4 RTD Embedded Technologies Inc Table of Tables TABLE DEFAULT JUMPER SEETINOGS teet etie tre eee icit nece eere E a E nenne 9 TABLE 2 SWITCH AND JUMPER TABLES 10 TABLE 3 BASE ADDRESS TABLE FOR COM erett e 11 TABLE 4 PARTIAL BAUD RATE TABLE IN rentrer rtr rer r rer r rener erener 11 TABLE CONNECTOR TABLE bye vov eee Exe Eug E 13 TABLEGPC ATO4 XT BUS CONNECTOR noscere oerte reete eee e tee 14 BUS CONNECTOR isscessissseeseveesevevnceseesiesdeseseeedncegeudlevegesvcbsedvesdevevecounsedevddesedessvnsesuvbdeveova2. In 9 9 10 GND Signal Ground 5 Facing the connector pins the pinout is pictured in the following Table 11 Connector CN3 in RS422 485 Mode II 9 7 5 3 1 CM310 CM16310 Quad Serial utility Module 17 RTD Embedded Technologies Inc Notes on using RS422 or RS485 Modes When using the serial port in RS422 or RS485 mode the serial receiver is always enabled however the serial transmitter is enabled and disabled under software control in the following two ways By default the transmitter is enabled by manipulating the Request To Send RTS signal of the serial port controller This signal is controlled by writing bit 1 of the Modem Control Register MCR as follows f MCR bit 1 1 then RTS 0 and serial transmitter is disabled If MCR bit 1 0 then RTS 1 and serial transmitter is enabled For more information on the serial port registers including the MCR please refer to a standard PC AT hardware reference for the 16C550 UART or refer to RTDUSA application note ANC102 at http www rtdusa com The other way to enable the serial transmitter is to write 1 to its corresponding bit of the utility Module s internal common register 4 which sets the serial transmitter in always on mode Please refer to Internal Common Register Section for detail Second COM port CN4 Please refer to the previous section on the first COM port CN3 for the description on CN4 Third COM port CN5 Pleas
3. Up Up Up 3F8 2F8 3E8 2E8 Table 4 Partial baud rate table in Kbaud Bud 5 1 2 Fast baud rates 5 2 3 Standard baud rates ivider CM16310HR CM310HR CM16310HR CM310HR 1 921 600 1 500 000 115 200 115 385 2 460 800 750 000 57 600 57 692 3 307 200 500 000 38 400 38 462 4 230 400 375 000 28 800 28 846 5 184 320 300 000 23 040 23 077 6 153 600 250 000 19 200 19 231 7 131 657 214 286 16 457 16 484 8 115 200 187 500 14 400 14 423 9 102 400 166 667 12 800 12 821 10 92 160 150 000 11 520 11 538 11 83 782 136 364 10 473 10 490 12 76 800 125 000 9 600 9 615 CM310 CM16310 Quad Serial utility Module Technologies Inc 11 RTD Embedded Chapter 2 INSTALLING THE UTILITYMODULE Since the utilityModule uses a PC 104 stackthrough bus the only hardware installation you will do is placing the module to the PC 104 stack To do this you will connect the PC 104 bus connector with the matching connector of another module Recommended Procedure We recommend you follow the procedure below to ensure that stacking of the modules does not damage connectors or electronics Turn off power to the PC 104 system or stack Select and install standoffs to properly position the utilityModule on the PC 104 stack Touch a grounded metal part of the stack to discharge any buildup of static electricity Remove the utilityModule from its anti static bag Check that keying pins in the PC 104 bus connector are properly positioned Chec
4. features 921 6 Kbps max baud transmit receive operation with 14 7456 MHz Oscillator 230 Kbps max in RS 232 mode 10 features 1 5 Mbps max baud transmit receive operation with 24 0000 Mhz Oscillator 230 Kbps max in RS 232 mode 310 16310 both support all standard baud rates 115 2K baud and below 16 byte transmit FIFO 16 byte receive FIFO with error flags Independent transmit and receive control e Standard modem interface Jumper selectable interrupt line e Switch selectable base address e Switch selectable RS232 RS422 485 mode per port e Switch selectable enable disable per port e 16 different selectable I O base address combinations e Extended temperature range 40 to 85C e Low power consumption e Typical from single 5V power supply Software Included e Self explanatory diagnostic program included CM310 CM16310 Quad Serial utility Module 6 RTD Embedded Technologies Inc Connectors and Switches Connectors provided are e PC 104 Bus XT e CN2 PC 104 Bus e CN3 First COM port e Second COM port e CN5 Third COM port e CN6 Fourth COM port Switches provided are e SWI Base address selection e SW2 Enable Disable and RS232 RS422 486 mode e SW3 First and second port RS422 485 termination e SWA Third and forth port RS422 485 termination Recommended Cables XK CM310 General Specifications e Dimensions 3 8 x 3 9 x 0 6 97 x 100 x 16 mm e Weight mass 3 0
5. include keying First COM port The first serial port is implemented on connector CN3 It can be configured as a PC compatible full duplex RS232 port or as half or full duplex RS422 or RS485 through mode SW3 The I O address is configurable in respect to SW1 address table and corresponding interrupt is also selectable through jumper JP1 to be IRQ3 IRQ4 IRQ5 IR6 IRQ7 9 IRQ10 IRQ12 IRQ14 and IRQ15 But you need to make sure that there are no resource conflicts on the I O base address and interrupt line you choose The serial port is implemented with a 16C550 compatible UART Universal Asynchronous Receiver Transmitter This UART is capable of baud rates up to 115 2K CM310 CM16310 Quad Serial utilityModule 15 RTD Embedded Technologies Inc RS232 Serial Port Default The full duplex RS232 mode is the default setting on the utilityModule With this mode enabled connector CN3 must be connected to RS232 compatible devices The following table gives the connector pinout and shows how to connect to an external serial connector either DB25 or DB9 compatible Connector CN3 in RS 232 Mode Table 8 Connector CN3 in RS 232 Mode 1 CN3 Pin Signal Function In out DB25 DB9 1 DCD Data Carrier Detect In 8 1 2 DSR Data Set Ready In 6 6 3 RXD Receive Data In 3 2 4 RTS Request To Send Out 4 7 5 TXD Transmit Data Out 2 3 6 CTS Clear To Send In 5 8 7 DTR Data Terminal
6. ounces 85 grams e 6 layer PCB e Operating conditions e Temperature 40 85 degrees C e Relative humidity 0 95 non condensing e Storage temperature 55 to 125 degrees Configuring the utilityModule The following sections contain information on configuring the utilityModule Please read this entire section before attempting to use the utilityModule CM310 CM16310 Quad Serial utilityModule 7 RTD Embedded Technologies Inc Jumpers and Switches Locations The figure below shows switch and jumper locations O o o o p si o o o o D c x s BOojooaoaooooaoooacaoaaaooonoooonooosc mm Al SPOT OU OG 9 Q 20 0 1 OQ AO YOO OOOO t P FUSE Fy 4 y C Moto o o 0500002929220 ev NS ES EN Figure 1 Switch amp Jumper Locations CM310 CM16310 Quad Serial utilityModule 8 RTD Embedded Technologies Inc Default Settings The utilityModule is delivered from the factory configured according to the following table Table 1 Default Jumper Settings JP1 Not Installed Interrupts Disabled for 1 COM port JP2 Not Installed Interrupts Disabled for 27 COM port JP3 Not Inst
7. CM310 CM16310 Quad Serial Port utilityModule User s Manual RTD Embedded Technologies Inc Real Time Devices Accessing the Analog World amp BDM 610020016 Rev C CM310 CM16310 Quad Serial utilityModule 1 RTD Embedded Technologies Inc CM310 CM16310 Quad Serial Port utilityModule User s Manual RTD Embedded Technologies INC 103 Innovation Blvd State College PA 16803 0906 Phone 1 814 234 8087 FAX 1 814 234 5218 E mail sales rtd com techsupport rtd com Web site www rtd com CM310 CM16310 Quad Serial utilityModule 2 RTD Embedded Technologies Inc 08 17 1999 09 14 1999 10 18 1999 10 29 1999 02 01 2000 02 02 2000 02 08 2000 Rev A Rev B 02 20 2008 Rev C 03 04 2014 Revision History Initial release Pull down resister jumpers added Self explanatory diagnostic program included Include 24Mhz clock to support 1 5 Mbps transceiver operation Changed SW2 to 8 position and made SW3 and SW4 terminations Reversed RS 422 signal names polarity Removed 25 pin D connector for RS 422 mode New Manual Naming Method Corrected default IRQ jumper settings to match current shipping configuration Resolved some ambiguity in the COM port numbering Added a note about IRQ sharing and OS limitations Added CM16310HR version with 14 7456MHz oscillator Cleaned up interrupt sharing discussion and added disable bit in common register Added a table of partial baud r
8. N6 CN5 CN4 CN3 For each CNx bit If 0 RS 232 1 RS 422 485 Reserved reads as 0 BA 4 RS 422 RTS operation R W 7 6 5 4 3 2 1 0 Reserved Reserved IntShare IntSel CN6 CN5 CN4 CN3 IntShare 0 Interrupt sharing enabled interrupts driven high only Requires G jumper installed to pull interrupt low even if not sharing interrupts 1 Disable interrupt sharing and drive all interrupts both high and low You must use a separate interrupt for each serial port G jumper does not need to be installed Default to 0 to allow interrupt sharing IntSel 0 MCR bit 3 controls the three state interrupt output 1 Overrides MCR bit 3 and interrupt outputs are enabled continuously Default to 0 to set COM ports in normal mode For each CNx bit CM310 CM16310 Quad Serial utility Module 20 Technologies Inc RTD Embedded If Mode RS 232 then Not used Reads as 0 Else If Mode RS 422 485 then 0 2 use RTS to enable transmitter default case 1 transmitter always CM310 CM16310 Quad Serial utilityModule 21 RTD Embedded Technologies Inc Chapter 3 USING THE UTILITYMODULE COM ports The utilityModule features EXAR quad UART 16C550 compatible 16C554D part EXAR Documentation Due to the complexity of the EXAR serial chip it is impossible for us to reproduce all programming information in this manual If you will be doing in depth programming of the serial port controller we suggest you obtain the 16C554D data
9. Ready Out 20 4 8 RI Ring Indicate In 22 9 9 10 GND Signal Ground 7 5 Facing the connector pins the pinout is pictured in the following Table 9 Connector CN3 in RS 232 Mode ID 9 7 5 3 1 GND DTR TXD RXD DCD GND RI CTS RTS DSR 10 8 6 4 2 CM310 CM16310 Quad Serial utility Module 16 RTD Embedded Technologies Inc RS422 or RS485 Serial Port You can change the mode switch to set the first port as RS422 or RS485 In this case you must connect CN3 to an RS422 or RS485 compatible device When using RS422 or RS485 mode you can use the port in either half duplex two wire or full duplex four wire configurations For half duplex 2 wire operation you must connect RXD to TDX and connect RXD to TXD Note A 120 ohm termination resistor is provided on the utilityModule Termination is usually necessary on all RS422 receivers and at the ends of the RS485 bus If the termination resistor is required it can be enabled by closing corresponding bits on SW3 or SWA RS422 and RS485 Mode Pinout The following table gives the pinout of connector CN3 when RS422 or RS485 modes are enabled Table 10 Connector CN3 in RS422 485 Mode T CN3 Pin Signal Function In out DB9 1 RTS Request to send Out 1 2 RTS Request to send Out 6 3 RXD Receive Data In 2 4 TXD Transmit Data Out 7 5 TXD Transmit Data Out 3 6 RXD Receive Data In 8 7 CTS Clear to send In 4 8 CTS Clear to send
10. age due to problems with the 5 power supply from the PC 104 bus Protection is provided for e Over current e Reversed polarity e Excessive voltage This protection is only for the utilityModule and will not protect other devices in a PC 104 stack The protective fuse is replaceable and is available from electronics suppliers Its description and part number is Littelfuse Nano SMF 1 0 amp R451 001 Caution Replace fuses only with parts of identical current and voltage rating CM310 CM16310 Quad Serial utilityModule 24 RTD Embedded Technologies Inc Chapter 4 RETURN POLICY AND WARRANTY Return Policy If you wish to return a product to the factory for service please follow this procedure Read the Limited Warranty to familiarize yourself with our warranty policy Contact the factory for a Return Merchandise Authorization RMA number Please have the following available Complete board name Board serial number A detailed description of the board s behavior List the name of a contact person familiar with technical details of the problem or situation along with their phone and fax numbers address and e mail address if available List your shipping address Indicate the shipping method you would like used to return the product to you We will not ship by next day service without your pre approval Carefully package the product using proper anti static packaging Write the RMA number in large 1 l
11. alled Interrupts Disabled for 3 COM port JP4 Not Installed Interrupts Disabled for 4 COM port JP5 2 3 installed 1 8432 MHz clock selected for baud CLK jumper rates 115 2 K baud and below base addresses at SWI Alldown 3ES8 2ES8 280 288 for 1 24 3 and 4 COM port respectively 5 8 down All ports in RS232 mode CM310 CM16310 Quad Serial utilityModule 9 RTD Embedded Technologies Inc Descriptions The following table describes the functions of the jumpers Table 2 Switch and Jumper tables IRQ selection for 1 COM Port CN3 setting jumper installed 1K pull down resistor for the selected IRQ Jumper removed no pull down for the selected IRQ IRQ selection for 2 COM Port CN4 setting jumper installed 1K pull down resistor for the selected IRQ Jumper removed no pull down for the selected IRQ IRQ selection for 3 COM Port CN5 setting jumper installed 1K pull down resistor for the selected IRQ Jumper removed no pull down for the selected IRQ IRQ selection for 4 COM Port CN6 setting jumper installed 1K pull down resistor for the selected IRQ Jumper removed no pull down for the selected IRQ Input clock selection for serial ports for CM310 1 2 select 24 0000 MHz UART clock 2 3 select 1 8462 MHz UART clock default Input clock selection for serial ports for CM16310 1 2 select 14 7456 MHz UART clock 2 3 select 1 8432 MHz UART clock default 1 Up enable serial por
12. ates Published by RTD Embedded Technologies Inc 103 Innovation Blvd State College PA 16803 0906 Copyright 1999 2014 by RTD Embedded Technologies Inc rights reserved The RTD Logo is a registered trademark of RTD Embedded Technologies cpuModule and utilityModule are trademarks of RTD Embedded Technologies PhoenixPICO and PheonixPICO BIOS are trademarks of Phoenix Technologies Ltd PS 2 PC XT PC AT and IBM are trademarks of International Business Machines Inc MS DOS Windows Windows 95 Windows 98 and Windows NT are trademarks of Microsoft Corp PC 104 is a registered trademark of PC 104 Consortium other trademarks appearing in this document are the property of their respective owners CM310 CM16310 Quad Serial utilityModule 3 RTD Embedded Technologies Inc Table of Contents CHAPTER INTRODUCTION eo inso osea Une oe epa aevo Y ke aea e Sopa so so SER Sel ae go E roS obe e EP e EUN AS SFR De esa per sostes isop 6 CM310 CM16310 QUAD SERIAL PORT UTILITYMODULE cccsssccceessececsescececssececcseaececeeeeeecseeecsesaeeecnesaeeeeseeseenas 6 CONFIGURING THE UTILITY MODUL Biss sc seocdelsessceteeseesusssecyouscuschsobesduvcesculebstechoussescvsebite eo eun EE Tes Eee usua 7 CHAPTER2 INSTALLING THE UTILITYMODUL E ee eee eerte nnne n assets asses e testa asse seen 12 RECOMMENDED PROCEDURE sssssssesesesesesecececece
13. ceSavsvevestves 15 TABLE 8 CONNECTOR CN3 IN RS 232 MODE 16 TABLE 9 CONNECTOR CN3 IN RS 232 MODE II esses eene enne enne 16 TABLE 10 CONNECTOR CN3 IN RS422 485 MODE I esses rennen entente nennen nns 17 TABLE 11 CONNECTOR CN3 IN RS422 485 MODE II esses 17 Table of Figures FIGURE 1 SWITCH amp JUMPER LOCATIONS cccccccceeeeeseseseseeececececececececececececececececececececececececesscesececeeseseeeeseceserererereserens 8 FIGURE 2 CONNECTOR LEOCATIONS 2 hetero ete eerte er 13 CM310 CM16310 Quad Serial utilityModule 5 RTD Embedded Technologies Inc Chapter 1 INTRODUCTION This manual gives information on the CM310 CM16310 Quad Serial Port utilityModule This module supports four versatile serial ports for the 16 Intel bus interface type with jumper configurable IRQ lines and I O addresses for your PC 104 applications CM310 CM16310 Quad Serial Port utilityModule The CM310 CM16310 Quad Serial Port utilityModule was designed to provide four versatile serial ports to support the Real Time Devices cpuModules and other standard PC 104 processor modules Features The following are major features of the CM310 CM16310 utilityModule e Compatibility with the Industry Standard 16C550 UART CM16310
14. cececececececececesesesesevesesesesesesesesecesesesesesesesesereseseseresesesesececeserereresenens 12 FINDING PIN 1 OF CONNECTORS EET AE EE 12 PC 104 BUS CONNECTORS CN1 AND 2 14 FIRST COM PORT ern e Or iege EE 15 RS232 SERIAL PORT DEFAULT e 16 RS422 0R RS485 SERTAL PORT iG tret tete eee tete ae Sas EA 17 SECOND COM PORT CNA preces eive rre ee Ee Ee ote user irte Ue eerte PU DR ERES 18 THIRD COM PORT CN eerie vie n rh OR PIE 18 FOURTH COM PORT need eter ee tere eiie e e REUS 18 CM310 CM16310 COMMON ee hehe e r r r r r r rer E 19 CHAPTER3 USING THE UTILITYMODULE e eere eee eren eee eoo oeste tone eee eese ense eee ee seen 22 COME PORTS sss hederae edes ee moche ee bed bed oe eto 22 CM310 1 5 MBPRS SUPPORT eee oet eie dese eee ee 22 CM16310 921 6 KBPS SUPPORT deteriore deese e eet ertet oe er te 22 INTERRUPT SHARING ive teet eo de ceteri eere se er NR 22 DIAGNOSTIC SOEEWARE eere AA EE EE eei eR LA deest esti 23 POWER PROTECTION CIRCUITRY
15. e refer to the previous section on the first COM port CN3 for the description on CN5 Fourth COM port CN6 Please refer to the previous section on the first COM port CN3 for the description on CN6 CM310 CM16310 Quad Serial utilityModule 18 RTD Embedded Technologies Inc CM310 CM16310 common registers The utilityModule includes 5 common registers to provide additional information and software control that is not required for normal COM port operation but may be helpful in determining the status of the board and configuring of the board The following two sections give the location and definition of the common registers Base Address of Common Registers The utilityModule common registers are located 800h above the address of the first enabled COM port That is assuming that X in hex is the first enabled COM port base address which can be any of the valid addresses listed in the Com Port Address Table the base address for the common registers is Y in hex then Y X 8001 For example if the switches of SW4 are set all DOWN position which makes CN3 3E8h CN4 2E8h CN5 280h and CN6 288h then according to the algorithm the common registers base address BA will be the following depending the setting of enable switch SW2 for each serial port If CN3 is enabled then BA 3E8h 800h BE8h Else if CN3 is disabled AND CN4 is enabled then BA 2E8h 800h AE8h Else if CN3 and CN4 are disabled AND CNS is enab
16. espectively Table 11 Jumper Settings for interrupt sharing Case 1 13 14 IRQ10 for 1 COM port Installed 1K pull down resister added on IRQ10 from PORT1 IRQ10 for 2 COM port No pull down resister added on IRQ10 from PORT2 IRQ1O for 3 port No pull down resister added on IRQ10 from PORT3 for 4 COM port No pull down resister added on IRQ10 from PORTA 13 14 Removed 13 14 Removed 13 14 Removed Table 12 Jumper Settings for interrupt sharing Case 2 Setting IPI 5 6 IRQS for 1 COM port Installed 1K pull down resister added on IRQ5 from PORT1 1 5 6 IRQS for 2 COM port Removed No pull down resister added on IRQ5 from PORT2 13 14 IRQ10 for 3 COM port Installed 1K pull down resister added on IRQ10 from PORT3 13 14 IRQIO for 4 COM port G jumper R move No pull down resister added on IRQ10 from PORT4 See common register at BA 4 for information about disabling interrupt sharing Diagnostic Software The companion CD for the utilityModule includes a menu driven diagnostic program Loop back plugs are required to run this program CM310 CM16310 Quad Serial utilityModule 23 RTD Embedded Technologies Inc Power Protection Circuitry To reduce the risk of damage due to power supply problems the utilityModule includes several protective components Module Power Supply Protection The utilityModule includes a component to help prevent dam
17. etters on the outside of the package Return the package to RTD Embedded Technologies Inc 103 Innovation Blvd State College PA 16803 0906 USA CM310 CM16310 Quad Serial utilityModule 25 RTD Embedded Technologies Inc Limited Warranty RTD Embedded Technologies Inc warrants the hardware and software products it manufactures and produces to be free from defects in materials and workmanship for one year following the date of shipment from RTD Embedded Technologies INC This warranty is limited to the original purchaser of product and is not transferable During the one year warranty period RTD Embedded Technologies will repair or replace at its option any defective products or parts at no additional charge provided that the product is returned shipping prepaid to RTD Embedded Technologies All replaced parts and products become the property of RTD Embedded Technologies Before returning any product for repair customers are required to contact the factory for an RMA number THIS LIMITED WARRANTY DOES NOT EXTEND TO ANY PRODUCTS WHICH HAVE BEEN DAMAGED AS A RESULT OF ACCIDENT MISUSE ABUSE such as use of incorrect input voltages improper or insufficient ventilation failure to follow the operating instructions that are provided by RTD Embedded Technologies acts of God or other contingencies beyond the control of RTD Embedded Technologies OR AS A RESULT OF SERVICE OR MODIFICATION BY ANYONE OTHER THAN RTD Embedded Technologie
18. k the stacking order make sure an XT bus card will not be placed between two AT bus cards or it will interrupt the AT bus signals Hold the utilityModule by its edges and orient it so the bus connector pins line up with the matching connector on the stack Gently and evenly press the utilityModule onto the PC 104 stack CAUTION Do not force the module onto the stack Wiggling the module or applying too much force may damage it If the module does not readily press into place remove it check for bent pins or out of place keying pins and try again Connecting the utilityModule The following sections describe connectors of the utilityModule Finding Pin 1 of Connectors A white area silk screened on the PC board indicates pin 1 of connectors A square solder pad visible on the bottom of the PC board also indicates it CM310 CM16310 Quad Serial utilityModule 12 RTD Embedded Technologies Inc Locations The figure below shows connector locations D9 DE Gh d Bl A e Cg a aagadntaA tor x 64 pus u mrng m v wu d Oje P 8 B Figure 2 Connector Locations Table 5 Connecto
19. led then BA 280h 800h A80h Else if CN3 CN4 and 5 are disabled AND CN4 is enabled then BA 288h 800h A88 A80h Else if CN3 CN4 CN5 and CN6 are disabled then Common Registers are disabled End If CM310 CM16310 Quad Serial utilityModule 19 RTD Embedded Technologies Inc Common Register definitions 0 Interrupt Status Read Only 7 6 5 4 3 2 1 0 Reserved TxRDY RxRDY CN6 CN5 CN4 CN3 For each CNx bit 0 Not interrupting 1 Interrupt set TxRDY 0 indicates a buffer ready for at least one of the four transmit channels 1 indicates that all transmit buffers are full RxRDY 0 indicates one or more of the receive channels has data ready to read 1 indicates that all receive buffers are empty Reserved reads as 0 BA 1 Address Switch Read Only 7 6 5 4 3 2 1 0 Reserved Reserved Reserved Reserved SW1 4 SW1 3 SW1 2 SWI 1 For each bit see table above 0 Down 1 Up Reserved reads as A to tag on the address register BA 2 Enable Disable Switch Read Only 7 6 5 4 3 2 1 0 Reserved Reserved Reserved Reserved CN6 CN5 CN4 CN3 For each CNx bit 0 Port is disabled 1 Port is enabled Reserved reads as OxA for clarity BA 3 Mode Switch Read Only 7 6 5 4 3 2 1 0 Reserved Reserved Reserved Reserved C
20. r Table PC 104 XT Bus PC 104 AT Bus 1 COM port 2 COM port 3 COM port 4 COM port CM310 CM16310 Quad Serial utilityModule Technologies Inc 13 RTD Embedded PC 104 Bus Connectors CN1 and CN2 Connectors and CN2 provide PC 104 bus connections carries XT bus signals and CN2 carries additional signals for the AT bus The signals on CN1 and CN2 conform to the IEEE P966 standard for the PC 104 bus The following tables list the connector pinouts Table 6 PC 104 XT Bus Connector Pin Rowa hRowB L dl J06HCHK Pp 2 D7 RESETDRV L3 SD6 4 50 RO gp _ 5w 25 6 SD DRQ Pp SDI ENDXER o 3 CM310 CM16310 Quad Serial utility Module 14 RTD Embedded Technologies Inc Table 7 PC 104 AT Bus Connector Pin X a a OV 07 1 MEMCSI 2 A3 10 516 LA2 RO _4___ _ LA 5 20 ROR 6 IRQI IRQM s RQS SD KEYINGPIN ov Ed SDII DRQ6 Note Two locations on the bus have mechanical keying pins to help prevent misconnection of the PC 104 bus These keying pins are a part of the PC 104 standard and we strongly recommend you leave them in place If you have other modules without keying pins we suggest you modify them to
21. s EXCEPT AS EXPRESSLY SET FORTH ABOVE NO OTHER WARRANTIES ARE EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND RTD Embedded Technologies EXPRESSLY DISCLAIMS ALL WARRANTIES NOT STATED HEREIN ALL IMPLIED WARRANTIES INCLUDING IMPLIED WARRANTIES FOR MECHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THIS WARRANTY IN THE EVENT THE PRODUCT IS NOT FREE FROM DEFECTS AS WARRANTED ABOVE THE PURCHASER S SOLE REMEDY SHALL BE REPAIR OR REPLACEMENT AS PROVIDED ABOVE UNDER NO CIRCUMSTANCES WILL RTD Embedded Technologies BE LIABLE TO THE PURCHASER OR ANY USER FOR ANY DAMAGES INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES EXPENSES LOST PROFITS LOST SAVINGS OR OTHER DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PRODUCT SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR CONSUMER PRODUCTS AND SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE CM310 CM16310 Quad Serial utilityModule 26 RTD Embedded Technologies Inc CM310 CM16310 Quad Serial utilityModule Technologies Inc RTD Embedded Technologies Inc 103 Innovation Blvd State College PA 16803 0906 USA Our website
22. sheet from the manufacturer The 16C554D datasheet is available on line in electronic format as an Adobe Acrobat PDF file on the EXAR website WWW exar com You may also contact EXAR Corporation 248720 Kato Road Fremont CA 94538 CM310 1 5 Mbps support With the 24 MHz clock selected JP5 1 2 the utilityModule is capable of provide data rates up to 1 5 Mbps in RS422 RS485 mode The RS 232 mode drivers are limited to 230 Kbps CM16310 921 6 Kbps support With 14 7456 MHz clock selected JP5 1 2 the utilityModule is capable of provide data rates up to 921 6 Kbps in RS422 RS485 mode The RS 232 mode drivers are limited to 230 Kbps Interrupt Sharing Interrupt sharing is a mechanism which allows different devices sharing the same active high IRQ line on the PC 104 bus given that there is a interrupt sharing circuit associated with each device The utilityModule provides interrupt sharing circuits for all the serial ports thus it allows sharing of one IRQ line among the serial ports in the utilityModule However the user needs to be careful when sharing an IRQ line with devices in the system elsewhere and be sure that other devices also share their lines as well For instance users should be aware of that the 4 associated with serial port J3 J4 on some RTD cpuModules are not shareable And if the utilityModule is in the same system with these cpuModules be advised not to use share IRQ3 IRQ4 for the utilityMod
23. t Down disable serial port Switch position Port CN3 CN4 CN5 CN6 Up RS422 485 mode Down RS232 mode Switch position Port CN3 CN4 CN5 CN6 Up Don t use on board serial termination resistor Down Use 120 on board serial termination resistor for RS422 485 mode Switch position Port and signal CN3 RxD CN3 CTS RxD CN4 CTS Up Don t use on board serial termination resistor Down Use 120 on board serial termination resistor for RS422 485 mode Switch position Port and signal 1 CNS RxD 2 CN5 CTS 3 CN6 RxD 4 CN6 CTS SW2 Positions 1 4 Sw2 Positions 5 8 CM310 CM16310 Quad Serial utility Module 10 RTD Embedded Technologies Inc Table 3 Base address table for COM ports COM port addresses base address in Hex for eight 8 bit registers SWI1 4 SW 3 SW 2 SW 1 CN3 CN4 CN5 CN6 Down Down Down Down 8 2E8 280 288 Down Down Down Up 280 288 290 298 Down Down Up Down 290 298 2A0 2A8 Down Down Up Up 2A0 2A8 280 288 Down Up Down Down 100 108 110 118 Down Up Down Up 120 128 130 138 Down Up Up Down 140 148 150 158 Down Up Up Up 160 168 170 178 Up Down Down Down 100 108 500 508 Up Down Down Up 120 128 520 528 Up Down Up Down 280 288 680 688 Up Down Up Up 290 298 690 698 Up Up Down Down 2A0 2A8 6A0 6A8 Up Up Down Up 2B0 2B8 680 688 Up Up Up Down 8 2E8 7 8 6E8 Up
24. ule unless you have serial ports on the cpuModule disabled Interrupt sharing in a PC 104 system requires the interrupt source to drive the interrupt line high when there is an interrupt and tri state the interrupt and use a 1K pull down resistor to pull the line low when not interrupting There should be only one resistor per IRQ line for all the devices that share an IRQ Installing a G jumper in the utilityModule will pull its associated IRQ line down with a 1K resistor That is for example if IRQn is shared among four serial ports on the utilityModule only one G jumper needs to be installed for IRQn line If more than one G jumper CM310 CM16310 Quad Serial utility Module 22 RTD Embedded Technologies Inc are installed the pull down on IRQn line will be much stronger that expected 1K ohm which may prevent interrupt controller from functioning correctly NOTE Some operating systems do not support IRQ sharing for ISA devices If the OS does not support ISA IRQ sharing then you must assign each com port to its own IRQ Let consider two cases to demonstrate the concepts for the above discussion Let us assume that IRQ5 and are not used and driven by other devices in the system For the first case line is shared among the four serial ports and for the second case IRQS is shared for port 1 and port 2 while IRQ10 is shared among port 3 and port 4 The following two tables listed the interrupt jumper settings for each case r
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