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ADV7441 HDMI TMDS Equalization settings.

Question asked by fziffel on Nov 10, 2011
Latest reply on Nov 10, 2011 by DaveD

We are getting errors using a 1080P60 HDMI input.

We had the Equalizer Regs setup for TMDS frequencies less than 160 MHz as shown in Section 4.1 on page 45 of the Rev. J June 2010 HW Database Manual.

When we set up the Equalizer Regs for TMDS frequencies above 160 MHz, we get much fewer errors.

 

Here is the question:

Does the TMDS frequency refered to in section 4.1 mean the clock freq (148.5 MHz), or the data lines (more like 750 MHz)?

If it does mean the clock frequency, why are the higher settings helping us?

 

Thanks,

Fred Ziffel

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