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ADV7511 HPD status detection

Question asked by daisu on May 26, 2014
Latest reply on Jun 12, 2014 by daisu

Hello all,

 

ADV7511 does not sometimes accept HPD interrupt  correctively.

 

Flow is below
1: Interrupt detection
2: Interrupt clear(0x72, 0x96 bit7)
3: accept HPD status ((0x72, 0x42 bit6))

 

Above reason
When Adv7511 accept HPD status and process interrupt clear ,
HPD status is changed by the timing of interrupt clear.
Last change can not be detected when next interrupt input AV7511.

 

Are above 1 to 3 flow and setting register  correrct ?

Regards,

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