AnsweredAssumed Answered

ADV7611 interrupt output signal is negated automatically

Question asked by takashima.i54 on Jan 31, 2017
Latest reply on Feb 2, 2017 by JeyasudhaMuthuPerumal

Our customer already start develop the firmware for the ADV7611 HDMI receiver.

They want to use INT1 pin to invoke interrupt service routine (ISR) when asserted it.

However the ADV7611 will negate INT1 pin automatically 2 or 3 us after assert INT1 when detect interrupt event.

For detail, please see attached waveform, this waveform indicate that the ADV7611 assert INT1 signal when detect RXA_5V (HMDI 5V) input and negate INT1 signal automatically in spite of they don't set CABLE_DET_A_CLR bit.

 

They want to disable automatically negate INT1 signal.

I try to find out how to disable this, but I cannot find out.

 

Please let us know how to disable automatically negate INT1 function.

 

Best regards,

Takashima

Attachments

Outcomes