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Less lines in ADV7180 free run mode NTSC embedded sync capture

Question asked by VarunDagar on Sep 4, 2013
Latest reply on Sep 11, 2013 by DaveD

Hi All,

 

We are using ADV7180 to capture in Embedded sync mode in one of our design. We have following observation:

1. Captured size is (720 X 243) or (720 X 244) per field when NTSC input is connected to the ADV7180.

2. Captured size is (720 X 233) or (720 X 234) per field when NTSC input is disconnected from the ADV7180 i.e. in free run mode (previously NTSC input was connected)

 

Is anybody have some input to help on this issue.

 

Thanks and Regards,

Varun

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