I2S is Inter-IC Sound.
I2S is a serial bus used to transport digital audio.
High-end CD and DVD players feature I2S outputs. I2S inputs are found on some PC sound cards.
|1||Word Clock (WCLK)|
|2||Bit Clock (BCLK)|
|4||Master Clock (MCLK)|
The pins on the male I2S jack are numbered clockwise, with the missing pin as zero.
The pins on the female I2S plug are numbered counter-clockwise, with the missing pin as zero.