Product Specs

Table Of Contents
20 GPIO General purpose input/output
Page
141
Bit number
Id
Reset 0x00000002
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
E
0
16
E
0
15
0
14
0
13
0
12
0
11
0
10
D
0
9
D
0
8
D
0
7
0
6
0
5
0
4
0
3
C
0
2
C
0
1
B
1
0
A
0
Id RW Field
Value Id
Value
Description
A
RW
DIR
Input
0
Pin direction. Same physical register as DIR register
Configure pin as an input pin
Output
1
Configure pin as an output pin
B
RW
INPUT
Connect or disconnect input buffer
Connect
0
Connect input buffer
Disconnect
1
Disconnect input buffer
C
RW
PULL
Pull configuration
Disabled
0
No pull
Pulldown
1
Pull down on pin
Pullup
3
Pull up on pin
D
RW
DRIVE
Drive configuration
S0S1
0
Standard '0', standard '1'
H0S1
1
High drive '0', standard '1'
S0H1
2
Standard '0', high drive '1'
H0H1
3
High drive '0', high 'drive '1''
D0S1
4
Disconnect '0' standard '1' (normally used for wired-or
connections)
D0H1
5
Disconnect '0', high drive '1' (normally used for wired-or
connections)
S0D1
6
Standard '0'. disconnect '1' (normally used for wired-and
connections)
H0D1
7
High drive '0', disconnect '1' (normally used for wired-and
connections)
E
RW
SENSE
Pin sensing mechanism
Disabled
0
Disabled
High
2
Sense for high level
Low
3
Sense for low level
20.3.22 PIN_CNF[12]
Address offset: 0x730
Configuration of GPIO pins
Bit number
Id
Reset 0x00000002
31 30
0 0
29
0
28
0
27
0
26
0
25
0
24
0
23 22 21 20
0 0 0 0
19
0
18
0
17
E
0
16
E
0
15
0
14
0
13
0
12
0
11
0
10
D
0
9
D
0
8
D
0
7
0
6
0
5
0
4
0
3
C
0
2
C
0
1
B
1
0
A
0
Id RW Field
Value Id
Value
Description
A
RW
DIR
Input
0
Pin direction. Same physical register as DIR register
Configure pin as an input pin
Output
1
Configure pin as an output pin
B
RW
INPUT
Connect or disconnect input buffer
Connect
0
Connect input buffer
Disconnect
1
Disconnect input buffer
C
RW
PULL
Pull configuration
Disabled
0
No pull
Pulldown
1
Pull down on pin
Pullup
3
Pull up on pin
D
RW
DRIVE
Drive configuration
S0S1
0
Standard '0', standard '1'
H0S1
1
High drive '0', standard '1'
S0H1
2
Standard '0', high drive '1'
H0H1
3
High drive '0', high 'drive '1''
D0S1
4
Disconnect '0' standard '1' (normally used for wired-or
connections)