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DS90UB949-Q1: For HDMI 720p resolution, could we use UB949 with UB928 and only 1-lane usage?

Ann_Lien
Genius 14500 points
Part Number: DS90UB949-Q1

Hello expert,

Customer is asking if we can implement below application. Could you check if below block is workable? Thanks a lot!

Best regards,

Ann Lien

  • 0
    TI__Mastermind 29815 points

    Hi Ann,

    Thanks for reaching out. Yes, in backward-compatible mode, the DS90UB949 supports up to 720p resolutions with 24-bit color depth over a single differential link. Also, the DS90UB928 can support High definition (720p) Video resolution.

    Note – The DS90UB949 is backward-compatible to the UB928 for PCLK ranging from 25 MHz to 85 MHz. Also, backward compatibility does not need to be enabled. When the DS90UB949 is paired with a backward compatible device, the serializer will auto-detect to 1-lane FPD-Link III on the primary channel (DOUT0±).

    Also, the PCLK of the transmitted video should less than 85 MHz to be supported by a single FPD-Link channel. Make sure your active video + blanking resolution meets this PCLK requirement

    Regards,

    Fadi A.