I.MX6 Dual Lite : HDMI TMDS signal line length

[inhojeon]

Hello all,

I wondering about design of HDMI TMDS signal lines length.

On Document of HW layout guidance I.MX6, just comment 100 ohm impedance pair about TDMS signals(line width), no comments line length.

I know about HDMI TMDS signal lines is high speed signals. So, that lines designed same length(no more than clk).

Please infome me about this question.

Best Regards,

Inho Jeon

[igorpadykov]

Hi Inho

you are right that HDMI TMDS are high speed signals, so

line length is restricted by possible reflections. However

if impedance is matched, reflections are minimized or

disappeared. One can look at p.101 document below about

hdmi signal loss vs length

http://www.ti.com/lit/ml/snla187/snla187.pdf

Best regards

igor

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