When ADAU1452 Serial Input Port 1 config ASRC input,BCLK 、LRCLK error

I use ADAU1452 serial input port 1 ,config tmd8  asrc input,audio signal can output ,but  i use Oscilloscope found BCLK and LRCLK waveform error.

LRCLK have pulse base on 48Khz ,BCLK have am modulation 。I see datasheet  gpio is bidirectional 。How can i config Register let the waveform normal?Can you help me? 

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