Conected toneboard with i2s

I tried to conected i2s to the 30pin fpc but didn’t worked. is it only i2s output on tone board generic? or anyway i2s input form rhe source?

Hi @zonix
May I know your application of connecting the I2S on KTB? Be note that the I2S on the 30pin FPC are physically connected to XMOS, not the ESS DAC.

Have fun!