INTERFACING THE TLC5540 ANALOG TO DIGITAL CONVERTER TO THE TMS320C203-80 DSP

CMOS analog-to-digital converters (ADCs) are used as basic building blocks in many types of data acquisition systems.

This application report describes the interface between the high-speed Texas Instruments (TIä) TLC5540 8-bit parallel-output ADC and the TI TMS320C203-80 digital signal processor (DSP). The 8-bit resolution ADC can operate at a rate of up to 40MSa/s (megasamples per second). On-chip voltage reference circuit can be used to create a very accurate 2V full-scale analog input conversion range. The C callable application program (assembly code) used to initialize the TMS320C203-80 and execute the code is also discussed.

This report serves as reference information for further development of hardware and software. The contents include hardware schematics and associated program software, block and timing diagrams, and a program flow chart.

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