- Three Signals : sck (clock) , sd (data) , ws (Word select)
- WS : Signal used to select Left or right audio Channel
- I2S supports only 2 channel. can be TDM used to support 4,6,8 channel using I2S interface.
TDM for Multichannel
- Same I2S interface for more than 2 channel.
- Each channel samples will be up to 32 bit time and after that next channel starts.
- Change of ws signal will determine odd/even channel. Transmitter & receiver has bit counter