Transmit – Audio - 3.0 English

DisplayPort 1.4 TX Subsystem Product Guide (PG299)

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3.0 English

This section contains debugging steps for issues with audio communication.

  1. Check if MAUD and NAUD registers are correctly programmed and aud_clk is calculated as expected to be 512 × fs.
  2. Follow steps mentioned in Programming DisplayPort Source.
  3. Check if the TX_AUDIO_CHANNELS register value matches with the input audio samples sent.
  4. Check if the TX_AUDIO_INFO_DATA is correctly formatted as per CEA 861-C info frame specification.
  5. Ensure all the inputs data bits of s_axis_audio_ingress_tdata and s_axis_audio_ingress_tid are correctly sent as per the format specified.