Thanks,and How to choose channels and slot assignment
If the STM controller is providing I2S signal, the ADC channels need to be assigned to I2S left and right slots, respectively. This can be done through the ASI_CHx registers (0x0B for CH1, 0x0C for CH2 ...).
In these registers, the CHx_SLOT[5:0] field decides whether the ADC channel is assigned to a left or right slot on the I2S.
eg. ADC_CH1 = 0x00 means channel1 data is sent on the left slot 0, whereas ADC_CH1= 0x20 means channel1 data is sent on right slot 0.
Yes, the INxP is the input pin for single-ended.