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AD9889B Read EDID Failed

Question asked by EddyFuro on Oct 12, 2013
Latest reply on Oct 14, 2013 by EddyFuro

Hi:

    I only set its register 0x41 with a value 0x10 when it detected the HPD keep in high status, It can not read the EDID bytes form the monitor (the register 0x42's value always is 0x40) and the tried times monitor register 0x9c's value is 0(default value is 3).

    The DDCSCL and DDCSDA pin are pulled up to 5V through the 2K resistance.

   

 

     I don't Know what's wrong with it and Need your help, Thanks very much!

 

                   Eddy Furo

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