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做了个板子，上电后，默认dataclk的时钟是13.125M的样子，但是656输出不是27M么？
你可以下载一个5160的EVM软件，里面有一些默认的配置，参考里面的寄存器设置
缺省情况下TVP5160会disable PCLK输出，你能量到有输出，我只能怀疑你写过TVP5160。所以，你需要检查你是10-bit输出还是20-bit输出。在default值下，TVP5160是10-bit BT.656输出，此时其时钟应该是27MHz.
