I have an external i2s source which I connected to my logic analyser to confirm a solid digital signal:
It shows a 3MHz SCLK, 48kHz LRCLK and the i2s analyser gets good 24-bit data values.
I then move the 4 cables from my logic analyser to the IN2 header pins on the EVAL-1452 board, but when I listen to the audio output it is distorted and sounds almost like it is pulsing noise at 3-4 Hz. You can sort of hear some of the content from time to time.
Obviously there is something wrong in my setup. I tried to also route serial input 2 to ASRC0, the output of which sounds the same as just grabbing the serial 2 input. The gain sliders have no effect over the output volume. One channel is noticeably louder than the other.
I have attached my SigmaStudio test file also.
I hope you can help! Many thanks!