FEATURE PHONE BASED ON TMS320LC203

This application report describes a feature phone design based on the TMS320LC203. The LC203 is a 3V member of the TMS320C2xx DSP family combining low cost and low power consumption with a computing power of 20 MIPS. Three independent onchip ports, UART, Serial Port and Parallel Port, allow designing with minimal external logic saving cost, board space and assuring fast access times.

This report discusses mainly the realization of an evaluation board for testing typical pay-phone algorithms such as signaling, speech processing and data transmission. Examples are given how to handle the different peripherals of the DSP regarding HW and SW issues. Basic initialization and test routines together with the board schematics complete this application description.

Go to the Engineering Design Center to locate information on other TI Semiconductor devices.

(c) Copyright 1998 Texas Instruments Incorporated. All rights reserved.
Trademarks, Important Notice!