lm9831 National Semiconductor Corporation, lm9831 Datasheet - Page 18

• Manufacturer Part Number: lm9831
• Description: 42-bit Color, 1200dpi Usb Image Scanner
• Manufacturer: National Semiconductor Corporation

Address
PAPER SENSE SETTINGS
MISC I/O PIN SETTINGS
58
59
PAPER SENSE 1: Polarity
PAPER SENSE 1: Level/Edge sensitive
PAPER SENSE 1: Stop Scan
Power On/USB Suspend Default: Input
MISC I/O 2: Input or Output
MISC I/O 2: Polarity
(if configured as an input)
MISC I/O 2: Level/Edge sensitive
(if configured as an input)
Power On/USB Suspend Default: Input
PAPER SENSE 2: Polarity
PAPER SENSE 2: Level/Edge sensitive
PAPER SENSE 2: Stop Scan
MISC I/O 1: Input or Output
MISC I/O 1: Polarity
(if configured as an input)
MISC I/O 1: Level/Edge sensitive
(if configured as an input)
MISC I/O 1: Output State
(if configured as an output)
MISC I/O 2: Output State
(if configured as an output)
Function
D
7
0
1
D
0
1
6
D
0
1
0
1
5
D
4
0
1
0
1
18
D
3
0
1
0
1
D
0
1
0
1
2
D
0
1
0
1
1
D
0
0 A low input on PAPER SENSE 1 is True
1 A high input on PAPER SENSE 1 is True
0 The MISC I/O 1 pin is configured as an input.
1 The MISC I/O 1 pin is configured as an output.
Level sensitive: PAPER SENSE 1 State bit (in Status
Register) is set to a 1 if PAPER SENSE 1 is currently
True.
Edge sensitive: PAPER SENSE 1 State bit (in Status
Register) is set to a 1 if PAPER SENSE 1 has been
True since the last time the Status Register was read.
Transitions on PAPER SENSE 1 will not clear the
scanning bit.
A False - to - True transition on PAPER SENSE 1 will
clear the Command Register and stop the scan.
A low input on PAPER SENSE 2 is True
A high input on PAPER SENSE 2 is True
Level sensitive: PAPER SENSE 2 State bit (in Status
Register) is set to a 1 if PAPER SENSE 2 is currently
True.
Edge sensitive: PAPER SENSE 2 State bit (in Status
Register) is set to a 1 if PAPER SENSE 2 has been
True since the last time the Status Register was read.
Transitions on PAPER SENSE 2 will not clear the
scanning bit.
A False - to - True transition on PAPER SENSE 2 will
clear the Command Register and stop the scan (after
the number of lines specified in the Lines to Scan
after PAPER SENSE 2 trips register).
A low input on MISC I/O 1 is True
A high input on MISC I/O 1 is True
Level sensitive: MISC I/O 1 State bit (in Status
Register) is set to a 1 if MISC I/O 1 is currently True.
Edge sensitive: MISC I/O 1 State bit (in Status
Register) is set to a 1 if MISC I/O 1 has been True
since the last time the Status Register was read.
The output of the MISC I/O 1 pin will be a logic low
(0V).
The output of the MISC I/O 1 pin will be a logic high
(5V).
The MISC I/O 2 pin is configured as an input.
The MISC I/O 2 pin is configured as an output.
A low input on MISC I/O 2 is True
A high input on MISC I/O 2 is True
Level sensitive: MISC I/O 2 State bit (in Status
Register) is set to a 1 if MISC I/O 2 is currently True.
Edge sensitive: MISC I/O 2 State bit (in Status
Register) is set to a 1 if MISC I/O 2 has been True
since the last time the Status Register was read.
The output of the MISC I/O 2 pin will be a logic low
(0V).
The output of the MISC I/O 2 pin will be a logic high
(5V).
Value
www.national.com