We have two INMP-421 digital PDM microphones that connect to the EVAL-ADAU7002Z. This has I2S output to the J2 on the EVAL-ADUA1452MINIZ. There is no audio sound on the OUT1 of the 1452MINIZ.
The input should go to the serial inputs 2 and 3 if I am reading the user guide, UG_636, correctly.
I am not sure if my Sigma Studio settings are correct.