Transduction TR-5001, User Manual

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JP4 ,JP5: WatchDog Timer Period Selection
The WatchDog Timer time-out period can be set as 10 sec, 20 sec, 30 sec
and 80 sec. The following table describes the jumper settings for the
period.
JP4 JP5 Time-out Period
JP5 JP4
10 Sec
JP5 JP4
20 Sec
JP5 JP4
30 Sec
JP5 JP4
80 Sec
JP6: WatchDog Timer Mode Selection
The WatchDog Timer is enabled by reading I/O port 843H. It should be
triggered before the Watch-Dog Timer time-out period ends, otherwise
the Watch-Dog Timer assumes the program operation is abnormal and
will issue either a reset signal to re-boot system again, or activate NMI
(By pull-low IOCHK#) to the CPU.
The WatchDog Timer can be disabled by reading I/O port 043H.
The JP8 jumper is used to select time-out signal. It can be RESET to
re-boot system, NMI to signal CPU or disable this function.
JP6 Setting Function
Pin 1-2
Short/Closed
NMI to signal CPU
Pin 2-3
Short/Closed
RESET to re-boot
system
27 TR-5001 User Manual