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SN65DP141: Request Design review

Mun Hee Lee
Prodigy 10 points
Part Number: SN65DP141


Tool/software:

Hello,

I'm going to make my own carrier board for COM Express Type module.

I designed schematic and made a PCB assembly but didn't see any output on the DP monitor.

So I'd like to confirm my schematic. Please review my schematic and advise me.

Here is my schematic.

 

The DP source is DP++ from COM Express module and output is miniDP.

BR,

  • 0
    TI__Mastermind 31955 points

    Hi,

    I don't see any immediate issues with your schematic. I have a couple questions to get a better idea of the problem:

    1. Are you able to detect the monitor from your DP source? Even if video does not output, you should see the monitor if the AUX and HPD signals are correct.

    2. If you can detect the monitor, have you tried adjusting the EQ on the SN65DP141? I see you have a relatively low EQ value set, which is ok for a short channel application. If you're using a longer channel then try increasing your EQ.

    Best,

    Shane