Digital sound communication
|This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)|
(Note there is no relation to I2C)
I2S (sometmimes IIS), Inter-IC Sound is meant to standardize PCM data between closeby chips.
As I2S doesn't spec a plug, or how to deal with longer cables (impedance and such), it is typically only used between components within a device.
- lines are: bit clock, left-right clock, data, ground
- Separating clock and data means somewhat lower jitter (and indirectly latency) than buses that don't.
- in applications often a little more
- ~2.4V threshold so can be used in 3.3V
- PCM data
- 16, 24, or 32-bit
- mono or stereo
- 8kHz to 192kHz (verify)