44.2 Components

The audio subsystem is made of the following components. Unless otherwise specified, all are designed to handle audio sample rates up to 192 kHz.

  • 2x Synchronous Serial Controller (SSC)
    • The maximum bit clock (TK or RK) speed is 25 MHz in Host or Client mode on both the receiver and the transmitter.
    • As an example, in TDM mode, this corresponds to up to 4x 32-bit channels at 192 kHz, or up to 8x 32-bit channels at 96 kHz.
  • 2x Inter-IC Sound Multi Channel Controller (I2SMCC)
    • The maximum bit clock (I2SMCCx_SCK) speed is 12.5 MHz in both Host and Client modes.
    • In TDM256 mode, this corresponds to 8x 32-bit channels at 48 kHz.
    • In 4x data lines Stereo mode, up to 8x 32-bit channels at 192 kHz are supported.
  • 2x Pulse Density Microphone Controller (PDMC)
    • Support of up to 8x microphones on 4 data lines with 48 kHz sampling rate
  • 1x Sony/Philips Digital Interface Receiver (SPDIFRX)
    • Support of sample rate up to 192 kHz with fGCLK ≥ 150 MHz
  • 1x Sony/Philips Digital Interface Transmitter (SPDIFTX)
    • Support of sample rate up to 192 kHz stereo with fGCLK ≥ 24.5476 MHz
  • 1x low-jitter audio PLL with one dedicated AUDIOCLK output pin
  • 1x Asynchronous Sample Rate Converter (ASRC) with 4 stereo channels
    • Supporting up to 4 independent conversion rates