I2S Controller Synchronous Driver

The Inter-IC Sound (I2S) module provides a bidirectional, synchronous, and digital audio link for transferring the PCM audio data. The I2S bus has separate clock signals for lower jitter than typical serial buses. When the I2S module is in controller mode it will only provide control signals (MCK, SCK, and FS) on the I2S bus, the data transfer will happen between the separate I2S Transmitter and I2S Receiver slave modules on the same bus.

It's used to generate continuous I2S compatible clock and control signals for I2S slaves such like audio codecs to use.

Parent topic: I2S Controller Driver

Summary of the API's Functional Features

The API provides functions to:

  • Initialize and deinitialize the driver and associated hardware

  • Enable or disable the I2S controller hardware

  • Change clock and control signals settings, including:

    • Serial Clock (SCK) generation

    • Word Select (WS)/Frame Select (FS) generation

Dependencies

  • The I2S master/controller capable hardware