lm9832 National Semiconductor Corporation, lm9832 Datasheet - Page 20

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

LM9832 Register Listing
Address
(NEW)
5F-68
6A-7F
TEST MODE SETTINGS
5B
5C
5D
5E
69
MISC I/O 5: Input or Output
MISC I/O 5: Polarity
(if configured as an input)
MISC I/O 5: Level/Edge sensitive
(if configured as an input)
MISC I/O 5: Output State
(if configured as an output)
Power On/USB Suspend Default: Output,
Logic High
MISC I/O 6: Input or Output
MISC I/O 6: Polarity
(if configured as an input)
MISC I/O 6: Level/Edge sensitive
(if configured as an input)
Power On/USB Suspend Default: Output,
Logic Low
ADC Output Code - MSB
ADC Output Code - LSB
ADC Test Mode
Pixel Processing Input Select
16 bit Counter Increment Select
(16 bit counter starts at 0, increments every
datapixel)
MCLK edge for AFE (Set this bit to 0)
CDS Signal
Reserved
Version Number
Reserved
MISC I/O 6: Output State
(if configured as an output)
Function
(Continued)
D
7
0
1
n n n n n n n n Used to force the input to the HDPI Divider to a known
n n n n n n n n
0
1
0 0 0 0 0 0 0 0 Write 00 to these registers
0 0 0 0 0 0 0 0 Write 00 to these registers
D
0
1
0
1
6
D
0
1
0 0
0 1
1 0
1 1
5
D
4
0
1
20
D
3
0
1
0 0
0 1
1 0
1 1
D
0
1
1 0 0 100 = LM9832 (011 = LM9831, 010 = LM9830)
2
D
0
1
0 0 Normal Operation
0 1 Bypass AFE, Normal ADC Operation
1 0
1 1
1
D
0
0 The MISC I/O 5 pin is configured as an input.
1 The MISC I/O 5 pin is configured as an output.
A low input on MISC I/O 5 is True
A high input on MISC I/O 5 is True
Level sensitive: MISC I/O 5 State bit (in Status
Register) is set to a 1 if MISC I/O 5 is currently True.
Edge sensitive: MISC I/O 5 State bit (in Status
Register) is set to a 1 if MISC I/O 5 has been True
since the last time the Status Register was read.
The output of the MISC I/O 5 pin will be a logic low
(0V).
The output of the MISC I/O 5 pin will be a logic high
(5V).
The MISC I/O 6 pin is configured as an input.
The MISC I/O 6 pin is configured as an output.
A low input on MISC I/O 6 is True
A high input on MISC I/O 6 is True
Level sensitive: MISC I/O 6 State bit (in Status
Register) is set to a 1 if MISC I/O 6 is currently True.
Edge sensitive: MISC I/O 6 State bit (in Status
Register) is set to a 1 if MISC I/O 6 has been True
since the last time the Status Register was read.
The output of the MISC I/O 6 pin will be a logic low
(0V).
The output of the MISC I/O 6 pin will be a logic high
(5V).
value for digital tests
Bypass AFE, bypass ADC digital correction,
output uncorrected ADC MSB
Bypass AFE, bypass ADC digital correction,
output uncorrected ADC LSB
Normal Operation - ADC Output
Registers 5C and 5D
16 bit counter, reset at the start of every scan
16 bit counter, reset at the start of every line
Increments by 1
Increments by 4
Increments by 16
N/A
Rising
Falling
Normal Operation
CDS signal is output on LAMP
Value
B
pin
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