108
6174B–ATARM–07-Nov-05
AT91FR40162S Preliminary
15.3.1
WD Overflow Mode Register
Name:
WD_OMR
Access:
Read/Write
Reset Value:
0
Offset:
0x00
• WDEN: Watch Dog Enable (Code Label
WD_WDEN
)
0 = Watch Dog is disabled and does not generate any signals.
1 = Watch Dog is enabled and generates enabled signals.
• RSTEN: Reset Enable (Code Label
WD_RSTEN
)
0 = Generation of an internal reset by the Watch Dog is disabled.
1 = When overflow occurs, the Watch Dog generates an internal reset.
• IRQEN: Interrupt Enable (Code Label
WD_IRQEN
)
0 = Generation of an interrupt by the Watch Dog is disabled.
1 = When overflow occurs, the Watch Dog generates an interrupt.
• EXTEN: External Signal Enable (Code Label
WD_EXTEN
)
0 = Generation of a pulse on the pin NWDOVF by the Watch Dog is disabled.
1 = When an overflow occurs, a pulse on the pin NWDOVF is generated.
• OKEY: Overflow Access Key (Code Label
WD_OKEY
)
Used only when writing WD_OMR. OKEY is read as 0.
0x234 = Write access in WD_OMR is allowed.
Other value = Write access in WD_OMR is prohibited.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
OKEY
7
6
5
4
3
2
1
0
OKEY
EXTEN
IRQEN
RSTEN
WDEN