AnsweredAssumed Answered

(ADV7181D)To detect unlock analog input.

Question asked by donadona999s on Aug 9, 2017
Latest reply on Sep 6, 2017 by donadona999s

Hi !


I already read this but something is wrong.

Can ADV7181D indicate the "in_lock" status to CPU via INT pin? 


I'm trying to detect unlock status using INT pin.

I am using ADV7181D eval board.



Experimental procedure is as follows:

1) Run script


2) Input CVBS

3) Un mask SD_UNLOCK


   *Mask every other status bit.

4) Clear SD_UNLOCK.

5) Set clear bit to "0".

6) Disconnect CVBS



But INT pin don't goes to low.

Why does this happen? Do you have any idea?


I read the status bit and status bit was changed.

(Connect CVBS)

    *Red INT

     Yellow I2C clk

     Blue    I2C data

(Disconnect CVBS)

But INT pin output don't change.



Can you help about this?


Best regards