80 SBC347A 3U VPX Single Board Computer
Publication No. 500-9300527837-000 Rev. A.0
6.69 Write Protection Status Register (0x6CC)
6.70 Board Jumper Link Status Register (0x6CD)
Bit Description
Default
7
Reserved
N/A
6
Ethernet controller configuration FLASH write protection status
ab
:
1 = Hardware write protection is active
0 = Hardware write protection is not active
a.
This bit only reflects the hardware write protection status. Software can only write
protect/enable the devices when the hardware write protection is clear.
b.
Hardware protection is not active when link P4 is fitted and the NVMRO backplane
signal is negated.
N/A
5
SPD EEPROM write protection status
c
:
1 = Write protection is active
0 = Write protection is not active
c.
Write protection is not active when link P4 is fitted and the NVMRO backplane
signal is negated.
N/A
4
Reserved
0
3
Boot SPI FLASH (main) write protection status
ab
:
1 = Hardware write protection is active
0 = Hardware write protection is not active
N/A
2
Boot SPI FLASH (recovery) write protection status
ab
:
1 = Hardware write protection is active
0 = Hardware write protection is not active
N/A
1
NVRAM write protection status
d
:
1 = Write protection is active
0 = Write protection is not active
d.
NVRAM write protection is set by the serial EEPROM DIP switch, which can be
controlled in the BIOS setup utility.
N/A
0
Serial EEPROM DIP switch write protection status
b
:
1 = Write protection is active
0 = Write protection is not active
N/A
Bits
Description
Default
7
Reserved
0
6
status:
1 = Jumper fitted
0 = No jumper fitted
N/A
5
Configuration EEPROM Write Enable Link (P4)
status:
1 = Jumper fitted
0 = No jumper fitted
N/A
4 to 0
Reserved
00000
b