Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Hoja De Datos
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AT91SAM9X25-EK
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SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
41.8.5 Write Protected Registers
To prevent any single software error that may corrupt CAN behavior, the registers listed below can be write-protected by
setting the WPEN bit in the CAN Write Protection Mode Register (CAN_WPMR).
setting the WPEN bit in the CAN Write Protection Mode Register (CAN_WPMR).
If a write access in a write-protected register is detected, then the WPVS flag in the CAN Write Protection Status Register
(CAN_WPSR) is set and the field WPVSRC indicates in which register the write access has been attempted.
(CAN_WPSR) is set and the field WPVSRC indicates in which register the write access has been attempted.
The WPVS flag is automatically reset after reading the CAN Write Protection Status Register (CAN_WPSR).
List of the write-protected registers: