Datasheet

842
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
40.8.30 USART Write Protect Status Register
Name: US_WPSR
Addresses: 0xF801C0E8 (0), 0xF80200E8 (1), 0xF80240E8 (2), 0xF80280E8 (3)
Access: Read-only
Reset: See Table 40-17
• WPVS: Write Protect Violation Status
0: No Write Protect Violation has occurred since the last read of the US_WPSR.
1: A Write Protect Violation has occurred since the last read of the US_WPSR. 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 US_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