Suite56 PCI Command Converter User`s Manual
Contents
1. 199989 3 2 Veo GND AMAA ICKDSCK 10K No Connect KEY No Connect ae xd CC RESET Gg M80 For JTAG Devices PIN TARGET QD 23 NoConnect 10K DEF 5 Eel DEZ 43 44 TRST For JTAG Devices CIRCUIT Vcc For JTAG Devices 10K DSP TRST PIN TOP VIEW AA2037 Figure 2 1 Target Vpp System JTAG OnCE Interface Connector Motorola Functional Description 2 1 Command Converter Interface Connector Note Figure 3 1 may not represent the exact JTAG OnCE configuration needed for every DSP due to possible differences in internal resistors on the pins Please see the Data Sheet for your DSP for information on internal resistors Since the target system will have a resident reset circuit an AND gate in series is recommended with the CC_RESET signal This will allow the target DSP to be reset with a valid level from either the target reset circuit or from the command converter The pull down resistors are provided to prevent false signals from being propagated to the JTAG OnCE circuit when the test data input debug serial input 1131 1 51 and test data clock debug serial clock TCK DSCK lines are active The test data out debug serial output TDO DSO pull up is designed to deassert the Debug Acknowledge signal from the OnCE circuit Figure 2 2 is the connector coming from the Target Interface Module via a 14 pin ribbon2. TCKn Configuration Number 1 Fan Out of TCK at Source gt TMS gt 2040 Configuration Number 2 Fan Out of TMS at Source Figure 2 4 Multiple JTAG Connectors Parallel Method In Configuration Number 2 the signal is split and buffered into a number of parallel TMSn signals Each of these signals may drive up to four TMS inputs Each method is equally valid The choice of methods will depend on practical considerations related to each project 2 4 Resetting Target DSP Devices The RESET signal and TRST signals from the command converter are typically connected to all target DSP devices on a JTAG chain All DSP devices on a JTAG chain connected to a specific command converter device are reset when RESET and TRST are asserted by the debugger command FORCE R Execution control is established immediately after 2 4 Suite56 PCI Command Converter User s Manual Motorola Resetting Target DSP Devices deassertion of TRST and before any instructions are executed This sequence of events is illustrated in Figure 2 5 Instruction Register e an 5 2 eo ee gt DEBUG_REQ e 4 1 Command Converter Asserts RESET All Targets Enter Reset 2 Asserted TRST 2A Deasserted TRST 3 JTAG Instruction DEBUG_REQUEST is Loaded 4 Command Converter Releases RESET Targets Exit Reset in Debug Mode AA2041 Figure 2 5 Rese
3. of RAM CD ROM drive Hard drive with 50 Mbytes of free space Mouse and keyboard Free PCI bus slot Motorola Suite56 PCI Command Converter 1 3 Operating Environment 1 4 Suite56 PCI Command Converter User s Manual Motorola Chapter 2 Functional Description The Suite56 PCI Command Converter interacts with the target DSP with the assistance of the Suite56 Software Development Tools Debugger and the user s host system The host system interface consists of a program written in the C language that sends commands via a PCI bus to the Suite56 PCI Command Converter Commands entered from the host system s keyboard are parsed and a series of low level command packets are sent to the Suite56 PCI Command Converter The Suite56 PCI Command Converter translates these low level command packets into one or more JTAG signals and OnCE commands that are transferred to the target DSP via its JTAG port The JTAG port provides the necessary control to the target so programs may be loaded or saved registers read or modified and hardware breakpoints set or cleared 2 1 Command Converter Interface Connector The target application board must have a 14 pin connector to interface to the command converter controller This interface comprises eight signals and three ground connections on a 7 row 2 column male pin header which are spaced on one tenth inch centers as illustrated in Figure 2 1 on page 2 1 10K GND AANM IDUDSI O 10K
4. DSPCOMMPCIUM D Rev 1 1 07 1999 Suite56 PCI Command Converter User s Manual Motorola Incorporated Semiconductor Products Sector 6501 William Cannon Drive West Austin TX 78735 8598 M MOTOHOPEA This document contains information on a new product Copyright Motorola Inc 1999 All rights reserved Motorola reserves the right to make changes without further notice to any products herein Motorola makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does Motorola assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation consequential or incidental damages Typical parameters which may be provided in Motorola data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters including Typicals must be validated for each customer application by customer s technical experts Motorola does not convey any license under its patent rights nor the rights of others Motorola products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support life or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur
5. SP 1 2 Operating Environment The Motorola DSP Suite56 Software Development Tools used for this Suite56 PCI Command Converter supports the following three host systems e Windows PC Hewlett Packard Workstations e Sun Ultra Workstations 1 2 1 Windows PC Requirements The minimum hardware requirements for using the Motorola DSP Suite56 Software Development Tools Debugger on a Windows PC include the following Windows PC Pentium class processor or higher e Windows 95 operating system with 16 Mbytes of RAM Windows 98 operating system with 32 Mbytes of RAM or Windows NT 4 0 operating system with 32 Mbytes of RAM CD ROM drive e Hard drive with 50 Mbytes of free space Mouse and keyboard Free PCI bus slot 1 2 Suite56 PCI Command Converter User s Manual Motorola Operating Environment 1 2 2 Hewlett Packard Workstation Requirements The minimum hardware requirements for using the Motorola DSP Suite56 Software Development Tools Debugger on an HP Workstation include the following HP Workstation running HP UX version 9 05 or 10 20 or higher 32 Mbytes of RAM CD ROM drive Hard drive with 50 Mbytes of free space Mouse and keyboard Free PCI bus slot 1 2 3 Sun Ultra Workstation Requirements The minimum hardware requirements for using the Motorola DSP Suite56 Software Development Tools Debugger on a Sun Ultra Workstation include the following Solaris Release 2 5 1 or higher 32 Mbytes
6. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application Buyer shall indemnify and hold Motorola and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part Motorola and are registered trademarks of Motorola Inc Motorola Inc is Equal Opportunity Affirmative Action Employer All other tradenames trademarks and registered trademarks are the property of their respective owners Suite56 PCI Command Converter EE Functional Description EM Suite56 PCI Command Converter Functional Description Table of Contents Chapter 1 Suite56 PCI Command Converter Ld lt Gen ral Description sont avs NOLEN Moe dA 1 1 L2 Operatinie Environment ates ieu LAGU 1 2 1 2 1 Windows PC Requirements 1 2 12 2 Hewlett Packard Workstation Requirements 1 3 1 2 3 Sun Ultra Workstation 1 3 Chapter 2 Functional Description 2 1 Command Converter Interface 2 1 2 2 Targe
7. Suite56 Software Development Tools CD or the DSP Tools website on the World Wide Web at the following web address http www motorola com SPS DSP tools documentation 1 1 General Description The Suite56 PCI Command Converter is used for designing debugging and evaluating DSP based systems Figure 1 1 shows how the Command Converter can be connected in a target system configuration and used as a hardware evaluation tool or as a software accelerator Target System 25 Pin OCD Target Ribbon Cable Interface Module 14 Pin Ribbon Host System Up to 24 p 7 2 2 MM Target 14 pin Devices Suite56 PCI 6 Command Converter AA2042 Figure 1 1 Command Converter to Target System Configuration Motorola Suite56 PCI Command Converter 1 1 Operating Environment The target system in Figure 1 1 can be a Motorola DSP application or evaluation board or any user defined target system The user defined target hardware must have an access point for the 14 pin JTAG ribbon cable that may be as simple as a 2 row 7 set of test points The Suite56 PCI Command Converter provides a physical link between the host system and the target via a PCI bus connection on the host card This link translates the high level debugger commands into JTAG signals that enable the host system to reset interrupt and send commands to the target D
8. cable When viewed with pin 8 keyed on the right side this plug connector has all odd numbers on the left side and all even numbers on the right side when viewed from the top Spacing between pins is one tenth inch TDI DSI G 2 TDO DSO 3 4 TCK DSCK 5 6 GND No Connect 7 KEY No Connect CC RESET Gg 1MS0 For JTAG Devices TARGET Vpp D No Connect DEZ D TRST For JTAG Devices For JTAG OnCE Devices TOP VIEW AA2038 Figure 2 2 Target Interface Module s 14 Pin JTAG OnCE Connector 2 2 Suite56 PCI Command Converter User s Manual Motorola TCK Drive and Timing Considerations 2 2 Multiple Target Connections Multiple target devices may be connected in series allowing a single command converter JTAG OnCE connector to control multiple devices as in Figure 2 3 Data flows from the JTAG host into each JTAG implementation through TDI out through TDO and into TDI in the next chip eventually returning to the JTAG host TRST ITS ESE a TRST Jo rd RESET TRST RESE TDI 55 TDI TDI TDO TDI TDO 15 TDO TCK TMS TAL TOKT us inn TCK TMS PT TCK TMS TRST RESET TDI TDO TCK TMS TDI TCK 1H TMS tt e Maximum of 4 Loads on Buffer 74HCT244 TCK Circuits or Similar AA2039 Figure 2 3 Multiple JTAG Target Connections Serial Method 2 3 Drive and Timing Considerations The signals from the command converter are TDO TCK a
9. nd TMS and TRST The TCK signal requires fast rise and fall times dictated by the TCK pin timing specification and consequently attention must be given to the drive capability of the circuits driving this signal When driving the TCK and TMS circuits with a large number of target devices the user must pay attention to the rise and fall times of TCK and TMS Excessive capacitance may cause communication problems when driving a single circuit that connects multiple TCK or multiple TMS input pins Excessive capacitance can also cause communication problems with a single circuit connecting multiple TMS input pins Acceptable transition times may be achieved for TCK and TMS by driving no more than four JTAG inputs from each buffered output This may be achieved with two configurations Figure 2 3 shows one method Here in effect one signal connects each of the TCK inputs and one signal connects each of the TMS inputs A buffer is placed in the circuit after each fourth input at most to restore the signal quality for subsequent inputs The propagation delay of the buffer is not significant Motorola Functional Description 2 3 Resetting Target DSP Devices Figure 2 4 shows two possible configurations of a second method that also enables signal quality to meet the requirements In Configuration Number 1 the signal is split and buffered into a number of parallel TCKn signals Each of these signals may drive up to four TCK inputs
10. t 2 3 2 3 Drive and Timing 0 8116 8 0 5 2 3 2 4 1101 1 14 DSP Devices 2 4 Motorola Table of Contents vi Suite56 PCI Command Converter User s Manual Motorola List of Figures 1 1 Command Converter to Target System Configuration 1 1 2 1 Target Vpp System JTAG OnCE Interface Connector 2 1 2 2 Target Interface Module s 14 Pin JTAG OnCE Connector 2 2 2 3 Multiple JTAG Target Connections Serial Method 2 3 2 4 Multiple JTAG Connectors Parallel 16 00 2 4 2 5 Reset JTAG Device with RESET 1 1 2 5 Motorola List of Figures vii viii Suite56 PCI Command Converter User s Manual Motorola Chapter 1 Suite56 PCI Command Converter The Motorola Suite56 PCI Command Converter is an interface device that with the assistance of the Motorola Suite56 DSP Software Development Tools Debugger allows you to send and receive information from your host system to your Motorola DSP based system The interface is from the PCI bus on the host system through a target interface module to the DSP via a JTAG connection Note For more information on the Motorola DSP Suite56 Software Development Tools Debugger refer to the Suite56 Software Development Debugger User s Manual from the Motorola
11. t JTAG Device with RESET Signal The JTAG controller is still active after deassertion of TRST during reset and while RESET is held low The JTAG special instruction DEBUG_REQ is clocked in before RESET is deasserted When RESET is deasserted the device is immediately in Debug mode and no instructions are executed in the DSP Motorola Functional Description Resetting Target DSP Devices 2 6 Suite56 PCI Command Converter User s Manual Motorola Suite56 PCI Command Converter EE Functional Description EM Suite56 PCI Command Converter Functional Description
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