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Original question:

DS92LX2122: DS92LX211 and DS92LX2122 signal reliability and losing lock

DS92LX2122: Issue with flickering display

Jonathan Brodeur1
Prodigy 20 points
Part Number: DS92LX2122

I have the same issue about screen flickering... there is no solution at the end of the thread... would be great to help others to find their problem

  • 0
    TI__Guru 62730 points

    Hi Jonathan, 

    Similar to the last reply in the other thread, there are many potential causes and considerations for lock/flickering display. So you will need to share more information on design and issue to comment further. 

    Such as:

    • Verifying schematics properly match and follow Typical Connection Diagrams in datasheet with recommended values/characteristics. AC capacitors, ferrite/capacitor filtering, and so on
    • Proper layout practices (skew and impedance matching)
    • Proper cable/connector configuration/selection (STP/STQ & 100ohm impedance)
    • Power supplies are within specification (AC and DC) and stable
    • Proper register configuration
    • Checking lock status is cause of flicker
    • Investigating link stability with BIST mode

    Please share/check above details and communicate any other debug efforts already.

    Regards, 

    Logan