Atmel SAM9X25, Manual

Page: 691 / 1145

691
11054A–ATARM–27-Jul-11
SAM9X25
691
11054A–ATARM–27-Jul-11
SAM9X25
35.8.11 SPI Write Protection Status Register
Name: SPI_WPSR
Address: 0xF00000E8 (0), 0xF00040E8 (1)
Access: Read-only
• SPIWPVS: SPI Write Protection Violation Status
• SPIWPVSRC: SPI Write Protection Violation Source
This Field indicates the APB Offset of the register concerned by the violation (SPI_MR or SPI_CSRx)
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
SPIWPVS value Violation Type
0x1 The Write Protection has blocked a Write access to a protected register (since the last read).
0x2
Software Reset has been performed while Write Protection was enabled (since the last read or
since the last write access on SPI_MR, SPI_IER, SPI_IDR or SPI_CSRx).
0x3
Both Write Protection violation and software reset with Write Protection enabled have occurred
since the last read.
0x4
Write accesses have been detected on SPI_MR (while a chip select was active) or on SPI_CSRi
(while the Chip Select “i” was active) since the last read.
0x5
The Write Protection has blocked a Write access to a protected register and write accesses have
been detected on SPI_MR (while a chip select was active) or on SPI_CSRi (while the Chip Select
“i” was active) since the last read.
0x6
Software Reset has been performed while Write Protection was enabled (since the last read or
since the last write access on SPI_MR, SPI_IER, SPI_IDR or SPI_CSRx) and some write
accesses have been detected on SPI_MR (while a chip select was active) or on SPI_CSRi (while
the Chip Select “i” was active) since the last read.
0x7
- 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 SPI_MR (while a chip select was active) or on SPI_CSRi
(while the Chip Select “i” was active) since the last read.