SAM3A8C Atmel Corporation, SAM3A8C Datasheet - Page 180
SAM3A8C
Manufacturer Part Number
SAM3A8C
Description
Manufacturer
Atmel Corporation
- Current page: 180 of 1465
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• MONITORACT
Debug monitor active bit, reads as 1 if Debug monitor is active
• SVCALLACT
SVC call active bit, reads as 1 if SVC call is active
• USGFAULTACT
Usage fault exception active bit, reads as 1 if exception is active
• BUSFAULTACT
Bus fault exception active bit, reads as 1 if exception is active
• MEMFAULTACT
Memory management fault exception active bit, reads as 1 if exception is active
If you disable a system handler and the corresponding fault occurs, the processor treats the fault as a hard fault.
You can write to this register to change the pending or active status of system exceptions. An OS kernel can write to the
active bits to perform a context switch that changes the current exception type.
180
180
• Software that changes the value of an active bit in this register without correct adjustment to the stacked content can
• After you have enabled the system handlers, if you have to change the value of a bit in this register you must use a read-
cause the processor to generate a fault exception. Ensure software that writes to this register retains and subsequently
restores the current active status.
modify-write procedure to ensure that you change only the required bit.
SAM3X/A
SAM3X/A
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
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