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ADV7842 +ADV7513 Read EDID from VGA

Question asked by Captcha on Jun 21, 2013
Latest reply on Jun 21, 2013 by GuenterL

Hello

 

i have searched in the different topics but i didn't find answer to my question.

 

Why my PC attached to the VGA port of the ADV7842 can't read the content of the EDID ram ?

 

My config is : ADV7842 + ADV7513.

 

ADV7842 EDID SLAVE ADDRESS = 0x32

 

 

The ADV7513 have read the EDID content of my sink, and after that i have parsed the EDID from the ADV7513 to the ADV7842.

I have checked the content of the both and they are similar.

But i can't read the edid ram from the the pin VGA_SDA and VGA_SCL.

 

I have checked the VGA_PWRDN bit in the register HDMi and it is at 0 (mean Power up VGA EDID pads).

 

Any idea ?

 

Thanks

kapcha.

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