lm9832 National Semiconductor Corporation, lm9832 Datasheet - Page 14

• Manufacturer Part Number: lm9832
• Description: Lm9832 42-bit Color, 1200dpi Usb Image Scanner
• Manufacturer: National Semiconductor Corporation

LM9832 Register Listing
Address
SENSOR PIXEL CONFIGURATION
PIXEL DATA RANGE TO PROCESS
COLOR MODE SETTINGS
RESERVED
1C
1D
1E
1F
20
21
22
23
24
25
26
27
28
Optical Black Pixels Start
Optical Black Pixels End
Active Pixels Start - MSB
Active Pixels Start - LSB
Line End - MSB
Line End - LSB
Data Pixels Start - MSB
Data Pixels Start - LSB
Data Pixels End - MSB
Data Pixels End - LSB
AFE Operation
3 Channel or 1 Channel
1 Channel Grayscale Input Source
(1 Channel Color always uses the
Blue Channel as the input)
TR
(3 Channel Line Rate Mode only)
TR
(3 Channel Line Rate Mode only)
TR
(3 Channel Line Rate Mode only)
3 Channel Line Rate TR
(3 Channel Line Rate Mode only)
3 Channel Line Rate TR
(3 Channel Line Rate Mode only)
3 Channel Line Rate TR
(3 Channel Line Rate Mode only)
Triple TR output
Reserved
RED
GREEN
BLUE
(=TR1) position
(=CP2) position
(=TR2) position
Function
RED
GREEN
BLUE
drop
(Continued)
drop
drop
D
7
n n n n n n n n n pixels (0 - 255)
n n n n n n n n n pixels (0 - 255)
n n n n n n n n
n n n n n n n n
n n n n n n n n
n n n n n n n n
0
1
0 0 0 0 0 0 0 0 Write 00 to this register
D
0
1
0
1
6
D
n n n n n n n pixels (0 - 16383)
n n n n n n
n n n n n n
n n n n n n n pixels (Data Pixels Start - [Line End - 20])
0
1
0 0
0 1
1 0
1 1
5
D
4
0 0
0 1
1 0
1 1
14
D
3
0 0
0 1
1 0
1 1
D
0 0 0 3 Channel Pixel Rate Color
0 0 1 3 Channel Line Rate Color
1 0 0 1 Channel Grayscale
1 0 1 1 Channel Color
2
D
0 0 Do not drop any TR
0 1 Drop 1 TR
1 0 Drop 2 TR
1 1 N/A
1
D
0
Set to the same value as register Data Pixels Start.
n pixels (0 - 16383)
This selects the pixel count at which the current line is
ended and the next line begins. This determines the
integration time of one line.
n pixels (Active Pixels Start - 16383)
This selects the start of the range of pixels transmitted
to the PC and determines the pixel location where
offset and shading correction begins (pixel 0 in the
DataPort). This value must be >= Active Pixels Start
This selects the end of the range of pixels transmitted
to the PC. This value must be <= [Line End - 20]
Red Channel
Green Channel
Blue Channel
N/A
1st TR pulse position (inside Ø1 high)
2nd TR pulse position (inside Ø1 low)
1st TR pulse position (inside Ø1 high)
2nd TR pulse position (inside Ø1 low)
1st TR pulse position (inside Ø1 high)
2nd TR pulse position (inside Ø1 low)
Do not drop any TR
Drop 1 TR
Drop 2 TR
N/A
Do not drop any TR
Drop 1 TR
Drop 2 TR
N/A
Normal operation
Outputs single TR pulse on TR1, TR2, and CP2 pins
RED
RED
GREEN
GREEN
BLUE
BLUE
pulse (double integration time)
pulses (triple integration time)
pulse (double integration time)
pulses (triple integration time)
pulse (double integration time)
pulses (triple integration time)
RED
GREEN
BLUE
Value
pulses
pulses
pulses
www.national.com