XRD98L63 Datasheet, PDF (29/41 Pages) Exar Corporation – CCD Image Digitizers with CDS, PGA and 12-Bit A/D

XRD98L63
End of Line N
Start of Line N+1
Active Video
Pixels
OB pixels
Vertical Shift
Dummy &
OB pixels
Active Video
pixels
CCD
Signal
CAL
(optical black)
CLAMP
(DC restore)
PBLK
(blanking)
t_CAL
Disconnect CDS
from input pins
t_CLAMP
If PBLK overlaps with CAL and/or CLAMP, it will not affect the optical black calibration and DC restore functions.
Internally, CAL & CLAMP will overwrite PBLK.
Figure 22. Line Rate Timing with CALonly=0 (CLAMPpol=0, CALpol=0, PBLKpol=0)
Active Video
Pixels
CCD
Signal
CAL
Internal
(DC restore)
Internal
(optical black)
PBLK
(blanking)
End of Line N
OB pixels
Vertical Shift
Start of Line N+1
Dummy &
OB pixels
Active Video
pixels
t_CAL
4 pixels
t - 4 pixels
CAL
Disconnect CDS
from input pins
Figure 23. Line Rate Timing with CALonly=1 (CALpol=0, PBLKpol=0)
Rev.1.01
29