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SN65DSI86: How to make SN65DSI86 be an bridge of MIPI to DP ?

Wilson Chien
Prodigy 125 points
Part Number: SN65DSI86
Other Parts Discussed in Thread: TEST2

Hi team,

Our application is design in the SN65DSI86 to be a bridge of MIPI to DP.

We have check the circuit of the SN65DSI86 EVM board. This feature has been implemented on EVM board.

We referenced the circuit to design our platform but fail to display video on the DP monitor.

Would you please provide your experience of how to check the hardware and software design step by step ?

Thanks !!

Sincerely,

Wilson

  • 0
    TI__Guru**** 177031 points

    Wilson

    Most DP monitors do not support ASSR, please have TEST2 pin pulled high and disable ASSR.

    Please make sure power-up timing meets DSI86 requirement.

    Focus on the DP interface, make sure the DSI86 Video Register programmed value matches with the DP EDID info.

    • Enable the color bar and verify the color bar is working on the DP monitor.
    • If the color bar is not working, then dump out register from 0xF0 to 0xF8 for the root cause of the failure.

    Once the color bar is working, disable the color bar and focus on the DSI interface. If the video does not show up on the monitor, then dump out register from 0xF0 to 0xF8 for the root cause of the failure.

    Thanks

    David

  • 0 in reply to David (ASIC) Liu
    Prodigy 125 points

    Hi David,

    Thanks your great support.

    Pull high TEST2 pin and disable ASSR is the solution of my question.

    Wilson Chien