摘要
本文介绍了采用双声道音频A/D转换芯片CS5331A和TMS320VC5402DSP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TMD320VC5402DSP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。
In this paper, a stereo audio acquisition system is introduced, which use CS4331A, a stereo A/D transform IC, and TM,S320VC5402 DSP. Hardware design scheme of the system is described, including circuit interface and signal style between A/D and DSP. On the basis of hardware scheme, the system＇s software flow diagram is introduced,then the initial parameters settings for McBSP ＆ DMA of DSP are introduced in detail, and a sample routine is given. The acquired stereo data waves are submitted at last.
出处
《电子测量技术》
2009年第2期118-120,共3页
Electronic Measurement Technology
