For Audio - 3.0 English

DisplayPort 1.4 TX Subsystem Product Guide (PG299)

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3.0 English
  1. av_pat_gen work in two modes for audio

    Mode – 0 : When bit [1] value is 1’b0 in register 0x400, this IP just acts as a pass through to the incoming audio.

    Mode – 1: When bit [1] value is 1’b1 in register 0x400, then this IP generates test patterns for audio.

  2. To generate audio test patterns, make bit [1] of 0x400 as “0” initially and configure appropriate values in the configuration registers (like audio_test_pattern etc.) corresponding to the audio that is intended to be generated by the test pattern generator.
  3. Then program “1” to bit [1] of 0x400 to start the generation of required audio test pattern.
  4. User can enable bit [0] of 0x4B8, to start the internal audio checker of the IP which performs counting of number of audio samples being outputted by the IP. However currently there is no support to read this count through register interface. This checker can be used to count the audio samples on the input data when bit [1] of register 0x400 is programmed as 0.