av_pat_gen module acts as a test pattern generator for both video and
audio and in passthrough design this IP is connected before TX CRC module so as to
enable user to pass test patterns on to the TX CRC module and then to the DisplayPort
TX. av_pat_gen also has a switch for the user to select whether to pass
received input video/audio data (from DP RX in passthrough system) to its output
directly, or to generate test pattern video/audio data on to its output.
Note that this av_pat_gen is not part of the
DisplayPort protocol requirements and is used only in the example design to assist users
in validation. Hence, AMD does not provide
separate product guide for av_pat_gen and support
related to this IP.