数字信号处理芯片TMS320VC5402的语音接口设计

Design of speech interface for DSP chip TMS320VC5402

针对语音系统开发中常见的A/D ,D/A转换接口问题 ,设计出了定点DSPTMS32 0VC5 40 2与A/D ,D/A模拟接口芯片TLC32 0AD5 0C的主从模式接口电路 .TMS32 0VC5 40 2具有由分离的发送和接收通道组成的多通道缓存串口 .通过对TLC32 0AD5 0C采样频率的计算及对串行口编程 ,可设置串口工作方式 ,进行TLC32 0AD5 0C初始化 ,建立两芯片的连接 ,从而实现芯片间快速、灵活、可靠的数据传输 .

In allusion to the question of A/D,D/A conversion interface of speech processing system,the interface circuit with master slave function between fixed point DSP TMS320VC5420 and A/D,D/A analog interface chip TLC320AD50C are designed.TMS320VC5402 device includes two mulitchannel buffered serial ports consisting of separate transmit and receive channels.The TLC320AD50C device can be initialized through calculating the sampling rate and programming to set the serial ports operate mode,then the connection between two chips are built.So the high speed,flexible and reliable data transfer can be realized.