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TMDS1204：The output of the evaluation board could not be identified to HDMI2.1

wayne chen
Prodigy 10 points
Part Number: TMDS1204

Tool/software:

I am evaluating the board like this jumper, HDMI2.1 can not recognize, but HDMI2.0 can recognize

  • 0
    TI__Mastermind 27890 points

    Hi Wayne,

    What is the length of the cable?

    What board are you using?

    The cable requirements between HDMI 2.0 and HDMI2.1 are different. The HDMI2.1 cable must be CAT 3. 

  • 0 in reply to Vishesh Pithadiya
    Prodigy 10 points

    I am using an evaluation board of TMDS120 4, with one end connected to a 2-meter cable and the other end connected to a 0.5-meter cable. The HDMI 2.1 cable can recognize 8k 60HZ normally

  • 0 in reply to wayne chen
    TI__Guru**** 166711 points

    Hi,

    The evaluation board itself has two HDMI receptacles, and we will need to make sure to use a cable as short as possible to minimize the insertion and return loss from the two receptacles. The one we used is this at this link.

    Are you using I2C or pin strap mode to configure TMDS1204? Can you please share your current TMDS1204 configuration either in I2C or pin strap mode?

    Thanks

    David