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dm642中20位vp0和8/10位vp0的区别?



     在dm642中,20位的视频口VP0,串口McBSP0和音频控制端口McASP0引脚复用。可以配置位下面三种方式之一:
    1: 一个20位视频口VP0;
    2:一个8/10位视频口VP0和一个串口McBSP0;
    3:一个8/10位视频口VP0和一个串口McASP0音频数据接口。
    我想请问20位的视频口VP0和8/10视频口VP0有什么区别 ,是不是只是采样精度的不同?