Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
253
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
23.7.43 PIO Rising Edge/High-Level Select Register
Name:
PIO_REHLSR
Addresses:
0xFFFFF4D4 (PIOA), 0xFFFFF6D4 (PIOB), 0xFFFFF8D4 (PIOC), 0xFFFFFAD4 (PIOD)
Access:
Write-only
• P0-P31: Rising Edge /High-Level Interrupt Selection
0: No effect.
1: The interrupt source is set to a rising edge detection or high-level detection event, depending on PIO_ELSR.
23.7.44 PIO Fall/Rise - Low/High Status Register
Name:
PIO_FRLHSR
Addresses:
0xFFFFF4D8 (PIOA), 0xFFFFF6D8 (PIOB), 0xFFFFF8D8 (PIOC), 0xFFFFFAD8 (PIOD)
Access:
Read-only
• P0-P31: Edge /Level Interrupt Source Selection
0: The interrupt source is a falling edge detection (if PIO_ELSR = 0) or low-level detection event (if PIO_ELSR = 1).
1: The interrupt source is a rising edge detection (if PIO_ELSR = 0) or high-level detection event (if PIO_ELSR = 1).
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