TLV320AIC3104: S100 and TLV320AIC3104 driver load OK, but no sound

Part Number: TLV320AIC3104

Dear TI:
 
We got and no sound issues when we develop audio function with TLV320AIC3104, we have checked the power supply IOVDD 3.3V AVDD,DRVDD 3.3V and DVDD 1.8V. 
 
We played a sine wave via command, but when measuring RIGHT_LOP, RIGHT_LOM, LEFT_LOP, and LEFT_LOM with an oscilloscope, no signals were detected. And MCLK,BCLK,WCLK and DOUT have signals with oscilloscope.
 
Upon further inspection, the register values were compared with those of a reference unit and found to be consistent.
Could you please help identify where the issue might be?