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Application Brief

SPRA465

Digital Signal Processing Solutions June 1999

Designing the TMS320C548/9 DSP

Development Board

Art Chen Digital Signal Processing Solutions

John Wong

Abstract

This application brief describes the design of the Texas Instruments (TI™)TMS320C548/9

development board (DVB) from both the hardware and software approach. The DVB is a simple

stand-alone application board used to evaluate the performance and characteristics of the

TMS320LC548-80, TMS320LC549-80, and TMS320VC549-80 digital signal processor (DSP)

hardware and software.

The TMS320C548/9 DVB contains two boards connected by two box-style connectors:

TMS320C548/9 DSP board

Analog interface circuit (AIC) board

The DVB contains the TMS320LC548 or TMS320VC549 DSP and provides full-speed verification

of TMS320C54x codes. The DVB transmits and receives the audio signals via the AIC and

operational amplifier (OP Amp, OPA) port. The DVB transmits and receives the PSTN signals via

the AIC and data access arrangement (DAA) port. The DVB connects with the XDS-510 (JTAG—

Joint Testing Action Group, IEEE1149.1 Standard) and uses the TMS320C54x ('C54x) emulation

software as a debugging tool.

This application brief discusses the technologies behind the power system, clock, AIC/OPA,

AIC/DAA, and DSP. We focus on the memory configuration and code development for direct

communication between on-chip synchronized serial port and serial devices AIC, aspecially on

the telephony.

The authors extend their deep appreciation to Kevin Chang, Max Chyou, and Ted Lee from the

ASP-WCBU application team; Ryan Hsiao from MSLP; Mandy Tsai from the Taiwan FAE team;

and the members of the DSP champion team for their invaluable help in this project.

1 2 3 4 5 6 ... 35 36

Indice de contenidos

Pagina 1 - Development Board

Application BriefSPRA465Digital Signal Processing Solutions June 1999Designing the TMS320C548/9 DSPDevelopment Board Art Chen Digital Signal Processin

Pagina 2 - Contents

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 10Because the more than 66 MIPS calculation capability is applied in the TMS3

Pagina 3 - Introduction

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 11Figure 7. DSP External Memory Read TimingFigure 8. SRAM Read Timing= = Ac

Pagina 4

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 12Figure 9. DSP External Memory Write TimingRWRWOROR3.5 3.5 nS nS minmin3.5

Pagina 5

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 13TLC320AD50 Analog Interface CircuitThe TLC320AD50 provides high-resolution

Pagina 6

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 14Use the asynchronous serial port to send information controlling the config

Pagina 7 - JTAG (XDS-510)

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 15TLC2274 Operational AmplifierThe AIC uses differential input and single-end

Pagina 8 - Power System

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 16Figure 14. Single Ending OutputAVCCAVCC22AVCCOUT-AVCCAVCC22-- OUT-OUT-AVC

Pagina 9 - External Program Memory

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 17Figure 15. PSTN InterfaceTMS320TMS320TMS320C548/9C548/9C548/9HookHookDial_

Pagina 10 - Application Brief

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 18A basic rule in connector definition is that any VCC must not short with an

Pagina 11 - Figure 8. SRAM Read Timing

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 19Appendix A. TMS320C548/9 Development Board SchematicsFigure 16. TMS320C548

Pagina 12 - Figure 10. SRAM Write Timing

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 2ContentsIntroduction ...

Pagina 13

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 20Figure 18. TMS320C548/9 DSP and Clock

Pagina 14

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 21Figure 19. TMS320C548/9 Development Board JTAG Connector

Pagina 15 - TLC2274 Operational Amplifier

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 22Figure 20. TMS320C548/9 Development Board Power System

Pagina 16

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 23Figure 21. TMS320C548/9 Development Board 128K Words (Type 1) Memory Syste

Pagina 17 - Figure 15. PSTN Interface

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 24Figure 22. TMS320C548/9 Development Board 256K Words (Type 2) Memory Syste

Pagina 18

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 25Figure 23. TMS320C548/9 Development Board I/O Connectors on DSP Board

Pagina 19

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 26Figure 24. Analog Interface Circuit Board

Pagina 20

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 27Figure 25. TMS320C548/9 Development Board I/O Connectors on AIC Board

Pagina 21

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 28Figure 26. Audio Interface

Pagina 22

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 29Figure 27. PSTN Control Interface

Pagina 23

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 3IntroductionThe TMS320C548/9 DVB enhances the ability to create your own pro

Pagina 24

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 30Figure 28. PSTN Interface

Pagina 25

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 31Figure 29. TMS320C548/9 Development Board Placement

Pagina 26

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 32Appendix B. Bill of MaterialsItem Quantity Reference Part1 40 C1,C2,C3,C5,C

Pagina 27

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 33Item Quantity Reference Part39 1 Q3 A42/DIP40 1 Q4 BSS92/DIP41 1 RV1 VARIST

Pagina 28 - Figure 26. Audio Interface

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 34References TMS320C54x, TMS320LC54x Fixed-Point Digital Signal Processors, L

Pagina 29

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 35TI Contact NumbersINTERNETTI Semiconductor Home Pagewww.ti.com/scTI Distrib

Pagina 30 - Figure 28. PSTN Interface

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 36IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the ri

Pagina 31

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 4TMS320LC548, LC549, and VC549 DSPsThe TMS320LC548, TMS320LC549, and TMS320VC

Pagina 32 - Appendix B. Bill of Materials

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 5Appendix A shows circuit schematics designed using these pin definitions.The

Pagina 33

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 6Figure 3. TMS320LC549 and VC549 DSP PGE Package Top ViewTMS320LC549TMS320LC

Pagina 34 - References

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 7 DTMF Voice mail Centrex modemsThe TMS320C54x DSP is designed so that manufa

Pagina 35 - TI Contact Numbers

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 8Power SystemThe power system design of the TMS320C548/9 DVB is 5 VDC, 3.3 VD

Pagina 36

Application BriefSPRA465Designing the TMS320C548/9 DSP Development Board 9The other consideration for noise prevention is shielding and cutting. Some