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TLV320AIC33: the registers configuration with MIC3R input

Part Number: TLV320AIC33


I have some troubles when using the chip of tlv320aic33. Audio signal inputs from MIC3R channel,but the ADC  values read through SPI interface are almost the same.  I think It maybe have some errors with the configuration of the registers. What's the right configuration of registers?  thanks. 


  • Hi, Yuanding,

    The SPI interface of this device is used for control only, so the ADC data will not be sent over it. The audio digital data supported by this device is PCM, with different formats as I²S, L-J, R-J, TDM or DSP only. 

    Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer