on a LPC4323 I have to implement two I2S ports (2 stereo input pairs) input and two I2S ports (2 stereo output pairs).
All I2S are slave ports, I mean they share the same BCLK (bit clock) and LRCK (left/right word sync) generated from an external master. I would use SGPIO pins.
Any suggestions for me? Can you suggest an example to start? Is it possible synchronize the SGPIO I2S ports with the I2S ports already available on LPC4323 and using both native I2S ports and emulated I2s via SGPIO?