Datasheet

274
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
23.7.47 PIO Write Protect Status Register
Name: PIO_WPSR
Address: 0xFFFFF4E8 (PIOA), 0xFFFFF6E8 (PIOB), 0xFFFFF8E8 (PIOC), 0xFFFFFAE8 (PIOD)
Access: Read-only
Reset: See Table 23-2
• WPVS: Write Protect Violation Status
0: No Write Protect Violation has occurred since the last read of the PIO_WPSR register.
1: A Write Protect Violation has occurred since the last read of the PIO_WPSR register. If this violation is an unauthorized attempt
to write a protected register, the associated violation is reported into field WPVSRC.
• WPVSRC: Write Protect Violation Source
When WPVS is active, this field indicates the write-protected register (through address offset or code) in which a write access has
been attempted.
Note: Reading PIO_WPSR automatically clears all fields.
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
WPVSRC
15 14 13 12 11 10 9 8
WPVSRC
76543210
–––––––
WPVS