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Bitfield
2
SCOMA
The reset value of the SCOMA bit depends on the board version ordered. If the CP3005-SA is
ordered as a rear I/O version, the reset value is 0. If the CP3005-SA is ordered as a front I/O
version, an automatic switch over to the 8HP extension module is processed per default.
4.3.5. Device Protection Register (DPROT)
The Device Protection Register holds the write protect signals for non-volatile devices.
Table 17: Device Protection Register (DPROT)
Address
Bit
7
Name
SWP
Access
R
Reset
0
Bitfield
7
SWP
3
SFWP
2
JMP2
1
BSWP
0
SSWP
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Description
0 = Disable CPCI reset to board
1 = Enable CPCI reset to board
COMA routing selection:
0 = Rear I/O
1 = Extension module
6
5
Reserved
R
000
Description
System write protection status:
0 = Onboard non-volatile memory devices not write protected
1 = Onboard non-volatile memory devices write protected
SATA Flash module write protection status:
0 = SATA Flash module write protection included in system write
protection
1 = SATA Flash module write protection not included in system write
protection
This bit is read-only if the system write protection bit is activated
(SWP = '1').
System write protection via configuration resistors JMP2:
0 = System not write protected via JMP2
1 = System write protected via JMP2
System write protection via backplane (SYS_WP#):
0 = System not write protected via backplane
1 = System write protected via backplane
System write protection via software:
0 = System devices not write protected via software
1 = System write protected via software
Writing a '1' to this bit clears it. If this bit is set, it cannot be cleared.
0x284
4
3
SFWP
R/W
0
CP3005-SA – Rev. 0.6 Preliminary
2
1
JMP2
BSWP
R
R
0
0
0
SSWP
R/W
0
// 36
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