Datasheet
SLAS326A − JANUARY 2001 − REVISED MARCH 2004
14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
REGISTER DEFINITION
hot/cold pixel limit register format
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
X X X X X X X X X HFIT
hot/cold pixel limit register description
Bit Name Description
D9 − D1 X Reserved
D0 HFIT Set hot/cold pixel filter
0 − Apply Vb ± .8 hot/cold pixel filtering
1 − No hot/cold pixel filtering (default)
Default hot/cold pixel limit register value = 0000000001
control register2 format
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
SOF NOS ASOF VGND INM ACL WT3 WT2 WT1 WT0
control register 2 description
BIT NAME DESCRIPTION
D9 SOF 0 – Normal mode (default)
1 – Start of frame (only used when exposure time is changed)
When this bit is set to 1, next positive ADCCLK edge indicates that next pixel line is the beginning of a new frame.
The optical black correction will be performed with one line averaging only (digital filtering weight = 1) and without
hot/cold pixel limits.
D8 NOS Internal test bit, add 255 to optical black pixels when this bit is set to 1; default = 0
D7 ASOF Enable the auto SOF:
1 − Automatically enable SOF at major gain changes (no digital filtering for 1 line)
0 − No auto SOF (default)
D6 VGND Short VIDEOIN to GND when this bit is set to 1; default = 0
D5 INM This bit selects the input modes.
0 − CCD mode (default)
1 − Video mode
D4 ACL 0 Video mode, autoclamp (default)
1 Video mode, manual clamp
D3−D0 WT3−WT0 These three bits set the weight for digital filtering.
WT3 WT2 WT1 WT0 Weight (effect of the averaged result of each optical
black pixel line on overall optical black averaging)
0000 1
0001 1/2
0010 1/2
0011 1/8
0 1 0 0 1/16
0 1 0 1 1/32
0 1 1 0 1/64
0 1 1 1 1/128 (default)
1 0 0 0 1/256
Default control register2 value = X000000000