TLV320AIC3104: BCLK and WCLK Output Interrupted for about 15ms in Master Mode when Processor Start Sending Data to DIN Pin

Hi, Team

My automotive customer is using TLV320AIC3104 in their car infotainment system. They use TLV320AIC3104 ADC to convert MIC signal to processor and use TLV320AIC3104 DAC to convert audio data form processor to amplifier.

The MCLK is 16MHz from processor i.MX6. WCLK is 44.1kHz. PLL settings are: P = 1, R = 1, J = 5, D = 6448. TLV320AIC3104 is in master mode and output WCLK and BCLK.

When i.MX6 start sending data to DIN pin, BCLK and WCLK output from TLV320AIC3104 will interrupted for about 15ms and cause pop noise.

I change the MCLK source to a oscillator, but the issue is still there. Here is the waveform of WCLK interruption.

Is there any suggestion to solve this issue?

Thanks

Kevin Zhang