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ADV7612:  Can I ac-couple the tmds lines into the ADV7612 HDMI Rx?

Question asked by Mike324 on Jan 21, 2013
Latest reply on Jan 22, 2013 by GuenterL

The ADV7612 is used in a custom closed system, I am not concerned with compatibility with other hdmi transmiters.   The system is a video switch where all the tmds lines are ac coupled.  The TMDS lines come out of a CML transmitter where they are immediately terminated with 50ohm pullups.  From the pullup the line is ac coupled through a 0.1uF cap, then to a backplane connector.  I want to use the ADV7612 on a card which plugs into the backplane, and I'd like to know if I should bias the TMDS lines before they enter the ADV7612, or can I simply connect my ac-coupled lines directly to the ADV7612. 

Thanks,

Mike

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