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

DSP_DMA_McBSP.caj

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