Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
247
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
23.7.33 PIO Output Write Enable Register
Name:
PIO_OWER
Addresses:
0xFFFFF4A0 (PIOA), 0xFFFFF6A0 (PIOB), 0xFFFFF8A0 (PIOC), 0xFFFFFAA0 (PIOD)
Access:
Write-only
This register can only be written if the WPEN bit is cleared in
• P0-P31: Output Write Enable
0: No effect.
1: Enables writing PIO_ODSR for the I/O line.
23.7.34 PIO Output Write Disable Register
Name:
PIO_OWDR
Addresses:
0xFFFFF4A4 (PIOA), 0xFFFFF6A4 (PIOB), 0xFFFFF8A4 (PIOC), 0xFFFFFAA4 (PIOD)
Access:
Write-only
This register can only be written if the WPEN bit is cleared in
• P0-P31: Output Write Disable
0: No effect.
1: Disables writing PIO_ODSR for the I/O line.
31
30
29
28
27
26
25
24
P31
P30
P29
P28
P27
P26
P25
P24
23
22
21
20
19
18
17
16
P23
P22
P21
P20
P19
P18
P17
P16
15
14
13
12
11
10
9
8
P15
P14
P13
P12
P11
P10
P9
P8
7
6
5
4
3
2
1
0
P7
P6
P5
P4
P3
P2
P1
P0
31
30
29
28
27
26
25
24
P31
P30
P29
P28
P27
P26
P25
P24
23
22
21
20
19
18
17
16
P23
P22
P21
P20
P19
P18
P17
P16
15
14
13
12
11
10
9
8
P15
P14
P13
P12
P11
P10
P9
P8
7
6
5
4
3
2
1
0
P7
P6
P5
P4
P3
P2
P1
P0