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PCM1808: 主模式,48K采样频率,DATA无输出

Part Number: PCM1808

    我用的PCM1808主模式,MD0,MD1都为高,256Fs,SCKI接的是一个12.288MHz的有源

晶振,LRCK和BCK都有很好的时钟信号输出,VREF也是2.5(VCC/2),DOUT无信号输出,

不管VINR和VINL有没有模拟信号输入DOUT都无信号输出。从示波器看LRCK和BCK是同步的,

和SCKI有相位差。原理图和你们的评估板一样,就是电源滤波电容比你们的大。请帮忙看一下。