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您好，
您现在上电后是可以输出正确频率的DRDY脉冲信号是吗？
ID寄存器读取值错误应该是上电顺序不正确造成的，建议您上电后复位一下以使寄存器恢复至默认值，然后再进行寄存器读取看结果怎样？
下面FAQ讲了ID寄存器读取不正确的原因：
[FAQ] ADS129x: Why does the Device ID register show the incorrect number of channels?
