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DS90UB941AS-Q1: The specifical requoremnet of DSI packet order in Asymmetric Splitting With DSI VC-IDs

Amy Luo
Expert 6895 points
Part Number: DS90UB941AS-Q1

Hi team,

      one of our customer wants to split one link DSI to two link with VC-IDs by using DS90UB941AS-Q1 ,The Non-Burst mode with Sync Event packet order sequence has been listed in the datasheet ,but what about Burst video mode and Non-Burst mode with Sync pulse? And what's the difference of packet order between  Symmetric Splitting and  Asymmetric Splitting?

Thank you,

Amy

  • 0
    TI__Expert 6895 points

    The customer has asked two questions in the E2Echina forum, and this is the first question, and I think this is similar to the one above, so I write it Here they are. Because I am not familiar with SERDER, and I translated them into English as follows. Please indicate if there are any unclear descriptions.

    The customer intends to implement 1 link DSI Split to 2 link to both screens using DS90UB941AS-Q1. In the 8.4.6.4.1.1 Symmetric Splicing – left/right section, is this the left/right image spliced into one row, and the left and right two rows packaged as one row for the 941AS? If the left and right rows are spliced into one row, how does the 941 recognize the left and right rows and then split the screen? ? 941 Working in this mode, what are the requirements for packets that send left and right rows of data?

  • 0 in reply to Amy Luo
    TI__Mastermind 19720 points

    Hi Amy,

    You can look up the DSI packet order in the DSI specification in "8.11.2 Non-Burst Mode with Sync Pulses" and "8.11.3 Non-Burst Mode with Sync Events" and "8.11.4 Burst Mode".

    Can you describe what the input and output video format they are trying to achieve?

    Regards,

    Michael W.

  • 0 in reply to Michael.Walker
    TI__Expert 6895 points

    Hi Michael,

    Thank you for your reply. Below is the customer's feedback:"

    I know what you described.But what's the difference of packet order between  Asymmetric Splitting With DSI VC-IDs mode  and the specification described?  Is the difference  just the interlace of VC0 and VC1??

    Input video mode :1080p 60fps RGB24

    trying to achieve: 2 link 1080p rgb24 to LVDS DISPLAY "

    Thanks,

    Amy

  • 0 in reply to Amy Luo
    TI__Mastermind 19720 points

    Hi Amy,

    The difference is just the interlaces VC0 and VC1.

    If you are trying to send 2 1080p videos over one DSI port you might find that the video bandwidth is larger than the DSI can support.

    What SOC are they using?

    Regards,

    Michael W.