Hi vito,
I tell you the background and details of this question.
The customer wants to know whether pins of ADV7611 require external pull-up or pull-down or not.
Especially, he wants to know about P[23:0], LLC, HS, VS/FIELD/ALSB and DE pins.
Question:
Please let me ask this question because I don't know which pins are "All pins that are tristatable by default" you said.
Could you tell me the status about P[23:0], LLC, HS, VS/FIELD/ALSB and DE pins during reset?
Are all these pins are high-impedance during reset?
There is no external pull-up or pull-down register with P[23:0], LLC, HS, VS/FIELD/ALSB and DE pins on your evaluation board.
And I get information that ADV7611 has no internal pull-up or pull-down with http://ez.analog.com/thread/38347 .
So if P[23:0], LLC, HS, VS/FIELD/ALSB and DE pins are high-impedance during reset(default value), it may cause problem. (for example, latch up etc.)
So I think P[23:0], LLC, HS, VS/FIELD/ALSB and DE pins are not high-impedance during reset.
How is it actually?
Thank you!
Best regards.