DESIGNING THE TMS320C203 DSP DEVELOPMENT BOARD FOR TMS320C203 EVALUATION

This application brief describes the design of the TMS320C203 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 TMS320C203 digital signal processor (DSP) hardware and software.

The DVB contains the Texas Instruments (TI™) TMS320C203 DSP and provides full-speed verification of TMS320C203 codes. Communication with the host PC is configured through an RS-232 interface via the built-in UART (Universal Asynchronous Receiver and Transmitter) port. The DVB transmits and receives the analog signals via the analog interface circuit (AIC) and operational amplifier (OP Amp, OPA) port. The DVB connects with the XDS-510 (JTAG - Joint Testing Action Group, IEEE1149.1 Standard) and uses the TMS320C2xx ('C2xx) emulation software as a debugging tool.

This application brief discusses the technologies behind the power system, clock, AIC/OPA, UART, and DSP. We focus on the memory configuration and code development for direct communication between on-chip synchronized/ asynchronized serial port and serial devices AIC/RS-232.

Note:

You may see the term DSK in the circuits described in this application report. The DVB was originally named TMS320C203 DSP Starter Kit (DSK), which is a formal name at TI, then renamed DVB on completion of the project.

The authors extend their deep appreciation to Chaucer Kuo, William Chen, Kevin Chang, Gene Lin and Jeffery Lai from the ASP-DSP Application Team; Jerry Chen from the ASP-ASIC Team; Ryan Hsiao from MSLP; and Vivian Shao from the Taiwan CAC Team for their invaluable help in this project.

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(c) Copyright 1998 Texas Instruments Incorporated. All rights reserved.
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