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SN65DPHY440SS: sn65dphy440ss question

ian wu
Intellectual 475 points
Part Number: SN65DPHY440SS

Hi Ti engineer,

Our company encountered the following problems when using sn65dphy440ss verification:
1, signal source-turn-board -MIPI display screen, the picture is normal;
2, add a turnboard with sn65dphy440ss chip,MIPI display, the picture is abnormal.
May I ask why the signal is abnormal after using the sn65dphy440ss chip? Are there any configuration errors? Attachment is the connection flow chart, sn65dphy440ss specification, sn65dphy440ss rotating board schematic.
Attachment: The sn65dphy440ss sn65dphy440ss sn65dphy440ss chip transfer board and transfer board are four-layer boards, and the impedance is controlled at 100Ω

sn65dphy440ss.pdf fs-5020-d-phy-zjb-v1-20231124.pdf

  • 0
    TI__Genius 13300 points

    Hello, 

    Could you clarify the two scenarios? One of the scenarios has the DPHY440SS chip and one is the same but without the chip?

    Can you provide more details on your input trace length and output trace lengths in and out of the DPHY440SS chip? Additionally, can you share screenshots of the oscope shots of the CLK and one data signal on the input and output of the chip?

    Thanks,

    Zach