dwarnerLogisync

EDID Comunications on the ADV7842 Chip

Discussion created by dwarnerLogisync on May 22, 2017
Latest reply on May 23, 2017 by dwarnerLogisync

How do I enable EDID communications on the DDCA pins of the ADV7842 chip?

In my project, I have a logic analyzer on these pins to monitor the traffic. When I plug the DVI cable from a desktop PC to the board, the PC sends out an I2C message to these pins but the AD7842 chip does not respond.
Is there a configuration script I need to send to the ADV7842 chip upon power up of the board?
Also, how do I configure the AD7842 with the correct information to report back?
Any help is greatly appreciated.

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