4 group I2S in adau1451 , only SDATA_IN0 works

Hello,

I am using ADAU1451,  there 4 audio sources,  AUX/SPDIF/USB/ WIFI.

AUXIN -->ADC-->SDATA_IN3   

USB (I2S)--> SDATA_IN2

WIFI(I2S)-->SDATA_IN0

SPDIF--> ASRC INPUT 0/1

Now , WIFI(I2S)-->SDATA_IN0  works,  

SPDIF--> ASRC INPUT 0/1  works

but  SDATA_IN2 / SDATA_IN3   no sound . which the BLCK/LRCK/DATA  tested by  AP , is fine.  but even in sigma 4.4 , use the level monitor  no signal  in at all.

donot know why.

Thanks 

Meican.