Advantech PCA-6010 User Manual page 78

Table A.1: Watchdog Timer Registers
Address of
Register (2E)
Read/Write
87 (hex)
07 (hex)
30 (hex)
F5 (hex)
Write 0 to bit 3: set second
as counting unit. [default]
Write 1 to bit 3: set min-
utes as counting unit
F6 (hex)
F7 (hex)
AA (hex)
PCA-6010 User Manual
Attribute
Value (2F)
&
description
Write this address to I/O address port 2E (hex)
-----
twice to unlock the W83627HG
Write 08 (hex) to select register of watchdog
write
timer.
Write 01 (hex) to enable the function of the
write
watchdog timer. Disabled is set as default.
write Set seconds or minutes as units for the timer.
0: stop timer [default]
01~FF (hex): The amount of the count, in sec-
onds or minutes, depends on the value set in
register F5 (hex). This number decides how
write
long the watchdog timer waits for strobe before
generating an interrupt or reset signal. Writing
a new value to this register can reset the timer
to count with the new value.
Bit 6: Write 1 to enable keyboard to reset the
timer, 0 to disable.[default]
Bit 5: Write 1 to generate a timeout signal
read/write immediately and automatically return to 0.
[default=0]
Bit 4: Read status of watchdog timer, 1 means
timer is "timeout".
Write this address to I/O port 2E (hex) to lock
-----
the watchdog timer 2.
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