SAM4L Datasheet, PDF (694/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

26.8.14 Write Protection Status Register
Register Name:
WPSR
Access Type:
Read-only
Offset:
0xE8
Reset Value:
0x00000000
ATSAM4L4/L2
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
SPIWPVSRC
7
6
5
4
3
2
1
0
-
-
-
-
-
SPIWPVS
• SPIWPVSRC: SPI Write Protection Violation Source
This Field indicates the Peripheral Bus Offset of the register concerned by the violation (MR or CSRx)
• SPIWPVS: SPI Write Protection Violation Status
SPIWPVS value
1
2
3
4
5
6
7
Violation Type
The Write Protection has blocked a Write access to a protected register (since the last read).
Software Reset has been performed while Write Protection was enabled (since the last read
or since the last write access on MR, IER, IDR or CSRx).
Both Write Protection violation and software reset with Write Protection enabled have
occurred since the last read.
Write accesses have been detected on MR (while a chip select was active) or on CSRi (while
the Chip Select “i” was active) since the last read.
The Write Protection has blocked a Write access to a protected register and write accesses
have been detected on MR (while a chip select was active) or on CSRi (while the Chip Select
“i” was active) since the last read.
Software Reset has been performed while Write Protection was enabled (since the last read
or since the last write access on MR, IER, IDR or CSRx) and some write accesses have been
detected on MR (while a chip select was active) or on CSRi (while the Chip Select “i” was
active) since the last read.
- The Write Protection has blocked a Write access to a protected register.
and
- Software Reset has been performed while Write Protection was enabled.
and
- Write accesses have been detected on MR (while a chip select was active) or on CSRi
(while the Chip Select “i” was active) since the last read.
42023C–SAM–02/2013
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