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LVDS DS90UH925Q -ds90uh926q-q1- Validation

Gokul Kujulva
Genius 4465 points
Other Parts Discussed in Thread: DS90UH925Q, SYSBIOS

Hi all,

We are using LVDS  DS90UH925Q -ds90uh926q in our customized board.

We would like to validate the data line, independent of the Display data ,through pattern generation.

How to configure for pattern generation mode & validate the color pattern ?

Do you have any firmware-file to do this?

We are doing from SYSBIOS.

Regards,

Gokul

  • 0
    Genius 4465 points

    Hi all,

    Please let me know the initialization sequence for both.

    Best Regards,
    Gokul

  • 0 in reply to Gokul Kujulva
    TI__Guru 55685 points

    Hi Gokul,

    I received your e-mail regarding this question.
    I have contacted Vision SDK experts to comment as I am not an expert on LVDS.

    Regards,
    Rishabh

  • 0 in reply to Rishabh Garg
    TI__Genius 12705 points

    Hello,

    Yes the DS90Ux925 and DS90UB926 provide a Pattern Generator to allow basic testing and debugging of an integrated panel as well as the serial link, without the requirement that a video stream be present.   If a video stream is present, the Pattern Generator will normally use the same timing (pixel clock and frame dimensions) as the video stream.  If a video stream is not present, the Pattern Generator will generate its own timing via control registers. for more detailed information please reference  the respective datasheets and SNLA132;

     

    Regards,

    Liam

  • 0 in reply to Liam Keese
    Genius 4465 points

    Hi Liam,

    Can you please share the sequence for  pattern generation  from DS90Ux925 & DS90Ux926 ?

    1. Is it enough to configure the serializer DS90Ux925  register alone for pattern generation ?

    ie  address 0x64 and 0x65 from the serializer ?

    2. if there is video stream and configured for pattern generation from DS90Ux925 , only the pattern be visible in the display ?

    Best regards

    Gokul

  • 0 in reply to Gokul Kujulva
    TI__Guru 52051 points
    Gokul,

    This might not have come through on your browser, but I believe what Liam posted above addresses these question in the app note he appended.
    Here is the link again:

    www.ti.com/lit/an/snla132c/snla132c.pdf

    John