Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Hoja De Datos
Los códigos de productos
AT91SAM9N12-EK
750
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
39.12.13 TWI Write Protection Status Register
Name:
TWI_WPSR
Addresses:
0xF80100E8 (0), 0xF80140E8 (1)
Access:
Read-only
• WPVS: Write Protect Violation Status
0: No Write Protect Violation has occurred since the last read of the TWI_WPSR.
1: A Write Protect Violation has occurred since the last read of the TWI_WPSR. If this violation is an unauthorized attempt to write
a protected register, the associated violation is reported into field WPVSRC.
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.
been attempted.
Note:
Reading TWI_WPSR automatically clears all fields.
31
30
29
28
27
26
25
24
WPVSRC
23
22
21
20
19
18
17
16
WPVSRC
15
14
13
12
11
10
9
8
WPVSRC
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
WPVS