Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
236
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
23.7.18 PIO Multi-driver Enable Register
Name:
PIO_MDER
Addresses:
0xFFFFF450 (PIOA), 0xFFFFF650 (PIOB), 0xFFFFF850 (PIOC), 0xFFFFFA50 (PIOD)
Access:
Write-only
This register can only be written if the WPEN bit is cleared in
• P0-P31: Multi-Drive Enable
0: No effect.
1: Enables multi-drive on the I/O line.
23.7.19 PIO Multi-driver Disable Register
Name:
PIO_MDDR
Address:
0xFFFFF454 (PIOA), 0xFFFFF654 (PIOB), 0xFFFFF854 (PIOC), 0xFFFFFA54 (PIOD)
Access:
Write-only
This register can only be written if the WPEN bit is cleared in
• P0-P31: Multi-Drive Disable
0: No effect.
1: Disables multi-drive on 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