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Pull-down register of HPD pin of ADV7511W.

Question asked by Tamu on Oct 15, 2013
Latest reply on Oct 29, 2013 by GuenterL

Hello,

 

I have a question about pull-down register of HPD pin of ADV7511W.

 

I can see 10k ohm pull-down register for HPD pin on ADV7511W_Eval_Sch_revA.pdf.
But when we do IBIS simulation by using "I(max)" of "INPUT0" with 10k ohm pull-down register,
we can see it keeps about 1.7V.
We think it's not kept less than VIL(max) when HDMI cable is not inserted.
Can we use 10k ohm pull-down register for HPD pin?
How much value of pull-down register should we use for VIL/VIH?

 

Thank you.
Best regards.

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