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2 Computer VGA inputs connected to a ADV7604.

Question asked by BrianG on Jul 31, 2011
Latest reply on Aug 4, 2011 by DaveD

I'm having trouble configuring the ADV7604 for a second VGA input.

 

The first VGA input using:

VS_IN1, HS_IN1, AIN8=R, AIN7=G, AIN9=B, SOG=SYNC3

Setting AFE 02 to b'010' works fine.

 

The second VGA input using:

TRI8/VS_IN2, TRI7/HS_IN2, AIN5=R, AIN4=G, AIN6=B, SOG=SYNC2

Setting AFE 02 to b'001' is not enough.

It looks as if the video is being clamped randomly throughtout.

 

A second VGA with separate H&V syncs is not exactly documented.

Nor is the usage of HS_IN2 and VS_IN2...

 

What other I2C settings should I use to get my second VGA to work?

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