摘　要:本文介绍了采用双声道音频A/D转换芯片CS5331A和TMS320VC5402 DSP组成的双声道音频采集系统

的设计。给出了系统的硬件设计方案,包括CS5331A与TMD320VC5402 DSP的接口电路和信号时序。在硬件方案

的基础上,给出了系统的总体软件流程,并详细介绍了DSP的多通道缓冲串行口(McBSP)和直接存储器访问(DMA)

的初始化设置,给出了相应例程。最后,给出了采集到DSP内存中的双声道音频数据的波形。

关键词:采集 DMA McBSP DSP

-Abstract: This paper describes the use of two-channel audio A/D conversion and TMS320VC5402 DSP chip CS5331A composed of two-channel audio acquisition system. Shows the system hardware design, including the CS5331A and TMD320VC5402 DSP interface circuit and signal timing. In the hardware solution, based on the given system' s overall software process, and details of the DSP multi-channel buffered serial port (McBSP) and direct memory access (DMA) initialization settings, gives the corresponding routines . Finally, given the collection to the DSP memory in two-channel audio data waveform. Keywords: acquisition　DMA　McBSP　DSP