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I2S Protocol/Handshake

Understanding the timing and data flow in I2S communication.

Data Formats

I2S supports several data alignment formats:

  • Standard (Philips) Format: MSB is transmitted one clock cycle after WS transition.
  • Left-Justified: MSB is transmitted on the same clock as WS transition.
  • Right-Justified: LSB is aligned with the WS transition.

Timing Requirements

Parameter Symbol Typical Value
Setup Time (Data to SCK) tsu 5 ns (min)
Hold Time (SCK to Data) th 5 ns (min)
WS Setup tws 10 ns (min)
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