As I know , the ES8323 PCM mode & I2S mode are the different serial audio data interface.
it is just a transport type between MCU and Audio codec .
you can check it on the document of ES8323_DS.pdf which can be downloaded on our website.
and here :
"The device provides four formats of serial audio data interface to the input of the DAC or output from the ADC through LRCK, SCLK and SDIN/SDOUT pins. The four formats are I2S, left justified, right justified and DSP/PCM mode."
here is the figure of the I2S mode format: and the pcm mode :
and both of them are delivered the PCM DATA .
So ,I guees the “PCM” from the "aplay -l" command means the “PCM DATA”, not the interface。
however, I'm not very sure about it .please tell me if I was wrong.
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