Atmel Evaluation Kit AT91SAM9X25-EK AT91SAM9X25-EK Scheda Tecnica

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SAM9X25 [DATASHEET]

11054E–ATARM–10-Mar-2014

To prevent any single software error that may corrupt HSMCI behavior, the entire HSMCI address space from address 
offset 0x000 to 0x00FC can be write-protected by setting the WPEN bit in the 

(HSMCI_WPMR).

If a write access to anywhere in the HSMCI address space from address offset 0x000 to 0x00FC is detected, then the 
WPVS flag in the HSMCI Write Protect Status Register (HSMCI_WPSR) is set and the field WPVSRC indicates in which 
register the write access has been attempted.

The WPVS flag is reset by writing the HSMCI Write Protect Mode Register (HSMCI_WPMR) with the appropriate access 
key, WPKEY.

The protected registers are:

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