Installation and Setup
2-4
Register 219h – Flash Control Register
This register controls the following LEDs and signals.
Table 2-4 LED/BIOS Register Settings
Bit
LED/Signal
Result
R/W
0
1
FAULT
0 = Fault LED on
1 = Fault LED off
R/W
1
PASS
0 = PASS LED off
1 = PASS LED on
R/W
2
1
N/A
N/A
3
N/A
N/A
4
1
RESERVED
Reserved
5
1
RESERVED
Reserved
6
1
RESERVED
Reserved
7
1
RESERVED
Reserved
Register 233h – Watchdog Timer Register
This register controls watchdog timer operation.
Table 2-5 Watchdog Timer Register Settings
Bit
Signal
Result
0
RESERVED
Reserved
1
RESERVED
Reserved
2
RESERVED
Reserved
3
RESERVED
Reserved
4
WDOG_EN
1 = Enables the watchdog timer
5
MRESET_EN
1 = Timeout generates
0 = Timeout generates IRQ10
6
WDOG_STS
Watchdog timer status bit
7
WDOG_CLR
Toggling this bit clears the watchdog timer
back to a zero count.
Note
Before enabling the watchdog timer for the first time, it is necessary to reset the
count back to zero by toggling bit 7 (WDOG_CLR). Toggling implies changing
the state of bit (0 to 1 or 1 to 0).
Summary of Contents for XVME-689-VR7
Page 4: ......
