Area-Scan Acquisition Mode

When the board is configured for image acquisition from area-scan cameras:

FVAL timing diagram (area-scan acquisition mode)

If the acquisition trigger is armed when FVAL raises, the board

Skips a pre-defined amount (VsyncAft_Ln) of video data lines at begin of frame (BOF),
Acquires a pre-defined amount (Vactive_Ln) of video data lines,
Terminates the image acquisition

The subsequent video data lines are all skipped until a new FVAL rising edge occurs.

Applicable limits on FVAL signal

Parameter	Min	Typ	Max	Unit
FVAL high duration	64	Lines with active video	N/A	Clock cycle
FVAL low duration	64	Lines with blanked video	N/A	Clock cycle
FVAL rising edge to LVAL rising edge setup time	0	-	N/A	Clock cycle
Skipped lines at begin of frame (BOF)	0	0	255	LVAL cycle
Acquired lines	Refer to Vactive_Px	-	Refer to Vactive_Px	LVAL cycle
Skipped lines at end of frame (EOF)	0	-	N/A	LVAL cycle