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ADV7280 in BT.656-4 mode & Progressive Output

Question asked by Geoff65 on Oct 6, 2015
Latest reply on Oct 8, 2015 by Rob.Analog

We have a custom camera system that is operating with an ADV7280.   All operation is working well, except that we have observed that in BT.656-4 mode (setup in Register 4 bit 7) and progressive output (setup in VPP Register 0x55 bit 7) the video decoder is providing 507 rows of data, rather than the 487 rows of data (as per Page 51 of UG-637).

All data being written to the ADV7280 has been confirmed using an I2C Logic analyzer.

Can you assist with this discrepancy ?    Is there a mistake in UG-637 or have we missed something in the setup configurations ?