Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Fiche De Données
Codes de produits
AT91SAM9X25-EK
84
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
13.10.2 AIC Source Mode Register
Name:
AIC_SMR0..AIC_SMR31
Address:
0xFFFFF000
Access
Read-write
Reset:
0x0
This register can only be written if the WPEN bit is cleared in
• PRIOR: Priority Level
The priority level is programmable from 0 (lowest priority) to 7 (highest priority).
The priority level is not used for the FIQ in the related SMR register AIC_SMR0.
• SRCTYPE: Interrupt Source Type
The active level or edge is not programmable for the internal interrupt sources.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
–
SRCTYPE
–
–
PRIOR
Value
Name
Description
0x0
INT_LEVEL_SENSITIVE
High level Sensitive for internal source
Low level Sensitive for external source
Low level Sensitive for external source
0x1
INT_EDGE_TRIGGERED
Positive edge triggered for internal source
Negative edge triggered for external source
Negative edge triggered for external source
0x2
EXT_HIGH_LEVEL
High level Sensitive for internal source
High level Sensitive for external source
High level Sensitive for external source
0x3
EXT_POSITIVE_EDGE
Positive edge triggered for internal source
Positive edge triggered for external source
Positive edge triggered for external source