Vengeance
3
User
’s Manual
26
LAN Bypass Configuration
Bit 7
TEXP (Read Only)
This bit indicates status of hardware timer.
0
Timer has not expired
1
Timer has expired
Bits 6~3
Not used.
Bits 2~0
TVAL2~0
These bits determine the amount of count value in second(s).
001
1 (sec)
010
2 (sec)
011
4 (sec)
100
8 (sec)
101
16 (sec)
110
32 (sec)
111
64 (sec)
000
Timer is not activated.
Writing a value to these bits will reset the hardware timer. The counting process
begins again according to the new written value. Software must write count value
periodically to ensure that timer will never expire. If timer timeout occurs, relay(s)
automatically close to form LAN bypass on selected segment(s) based on the
setting of Power On Bypass Control register (SEGN4~SEGN1).
Data (bits 6~0) read back from this register is not defined and therefore must be ignored. A
read operation upon this register should not refresh the hardware timer.
LAN Bypass Status / Firmware Version Register
Address:
LAN module/Slot1
LAN module/Slot2
LAN module/Slot3
LAN module/Slot4
0x8E3
0x8E7
0x8EB
0x8EF
7
6
5
4
3
2
1
0
VER3
VER2
VER1
VER0
BY4
BY3
BY2
BY1
R
R
R
R
R
R
R
R
Bit3~0
Lan Bypass Seg.1 status
Disable=0; Enable=1
Bit 7~4
Firmware version
Without LAN bypass function=1111
Appendix B
WDT Timer for System Reset
WDT (Watchdog Timer)
The hardware supports the WDT (Watchdog Timer) function. While time-out happens after a
defaulted period, the WDT will reset the system.
Note: The sample codes for the above features can be found in the CD, and they are only
for customers’ reference as remarked.
