Datasheet

249
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
If the user disables a system handler and the corresponding fault occurs, the processor treats the fault as a hard fault.
The user 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.