LM3S317-IQN20-A0T Luminary Micro, Inc., LM3S317-IQN20-A0T Datasheet - Page 139

• Manufacturer Part Number: LM3S317-IQN20-A0T
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

May 4, 2007
Reset
Type
Reset
Type
Bit/Field
31:8
GPIO Digital Input Enable (GPIODEN)
Offset 0x51C
7:0
RO
RO
31
15
0
0
Register 18: GPIO Digital Input Enable (GPIODEN), offset 0x51C
The GPIODEN register is the digital input enable register. By default, all GPIO signals are
configured as digital inputs at reset. The only time that a pin should not be configured as a digital
input is when the GPIO pin is configured to be one of the analog input signals for the analog
comparator.
RO
RO
30
14
0
0
reserved
Name
DEN
RO
RO
29
13
0
0
RO
RO
28
12
0
0
reserved
Type
R/W
RO
RO
RO
27
11
0
0
RO
RO
26
10
0
0
Reset
0xFF
0
RO
RO
25
0
9
0
Preliminary
Description
Reserved bits return an indeterminate value, and should never
be changed.
Digital-Input Enable
0: Digital input disabled
1: Digital input enabled
RO
RO
24
0
8
0
reserved
R/W
RO
23
0
7
1
R/W
RO
22
0
6
1
R/W
RO
21
0
5
1
R/W
RO
20
0
4
1
DEN
R/W
RO
19
0
3
1
LM3S317 Data Sheet
R/W
RO
18
0
2
1
R/W
RO
17
0
1
1
R/W
RO
16
0
0
1
139