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ADV7614 port D EDID issue

Question asked by Viking on Jan 5, 2015
Latest reply on Jan 8, 2015 by Viking

Hi,

We're using ADV7614's port A and port D as the HDMI inputs, and sharing the internal EDID for all ports.

When input from port A, the content of EDID is correct. When I switch the source to port D, then the content of EDID is changed (e.g. original=>0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, switching to port D=> 0x30, 0xff, 0xff, 0xff, 0xff 0xff, 0xff, 0xff). Only the first byte of the EDID is changed, all the others are unchanged.

I checked the content of the internal EDID by another pattern generator, which can read the EDID via I2C address 0xA0.

Is there anything I missed? (I've confirmed that the pin R12 "SHARED_EDID" is high, which means port D shares the same EDID content as other ports.)

 

Best Regards,

Viking

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