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TMDS181: About TX_TERM_CTL=NC(Automatically selects the termination impedance)

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Guru 21045 points
Part Number: TMDS181

Hi Team,

 

Our customer would like to about TX_TERM_CTL=NC(Automatically selects the termination impedance).

They are evaluating a signal of 4k60(6Gbps) from VGA.

Therefore, we believe that setting of “TX_TERM_CTL=NC” is most suitable.

 

Could you please let us know if you have any concern?

(For example, this setting cannot pass a compliance test etc.)

 

Regards,

Kanemaru

  • 0
    TI__Mastermind 23815 points

    Hi Kanemaru,

    The best option is TX_TERM_CTL=NC, in this test the Tx termination will be selected from the data rate and HDMI version.

    For HDMI1.4 there are two options:

    Data rate < 2Gbps -> No termination

    Data rate > 2Gbps(< 3.4Gbps) -> 150 to 300 ohms differential termination

    For HDMI2.0 there is just one option

    Data rate > 3.4Gbps -> 75 to 150 ohms differential termination

    Regards

  • 0 in reply to Moises Garcia
    Guru 21045 points

    Hi Moises-san,

    Thank you always for your kind support and information.

    Regareds,

    Kanemaru