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TMDS181: Design support

Shifali N
Expert 2145 points
Part Number: TMDS181

Hi,

I am using TMDS181RGZT for HDMI sink application.

Kindly review the schematics for the same and provide feedbacks.SCHEMATIC1 07 HDMI_INPUT_INT.pdf

  • 0
    TI__Guru**** 176681 points

    Hi.

    1. For DDC, the pullup needs to be 47k for the sink per the HDMI spec.

    2. For DDC I2C level shifter, please keep in mind the HDMI DDC capacitance compliance requirement, please take a look at this e2e thread for the detailed discussion of the I2C level shifter implementation for HDMI: 

    .

    3. Recommend using 0.22uF on the OE pin

    4. Since double termination is being used on the tMDS181 output, you may need to adjust down the resistor value on the VSADJ to compensate for the voltage drop of the double termination network.

    Thanks

    David