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Internal EDID initialized time of ADV7441A

Question asked by Kikka on Nov 11, 2013
Latest reply on Nov 13, 2013 by mattp

Hello.

 

Regarding internal EDID, ADV7441A_HW_RevJ.pdf says as following.

 

Page.54

When internal E-EDID is enabled on port A, the Hot Plug should not be asserted until the

EDID Map has been completely initialized with E-EDID.

 

Page.56

When internal E-EDID is enabled on port B, the Hot Plug should not be asserted until the

EDID Map has been completely initialized with E-EDID.

 

How can I get the trigger that EDID Map has been completely initialized?

 

Actually, it occurred that ADV7441A cannot sometimes react against read cycle from HDMI TX with following flow.

 

1.Set EDID Enable register

2.Wait 250ms

3.Set enable clock termination.

4.Assert HDP signal

 

Your advice will be a big help.

 

Best regards.

Kikka

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