Table A.1: Watchdog Timer Registers - Advantech PCA-6013 User Manual

Table A.1: Watchdog Timer Registers

Address of
Register (2E)
87 (hex)
07 (hex)
30 (hex)
F5 (hex)
F6 (hex)
F7 (hex)
AA (hex)
PCA-6013 User Manual
Attribute Value (2F) & Description
Write this address to I/O address port 2E (hex)
-----
twice to unlock the W83627DHG-P
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.
Set seconds or minutes as units for the timer.
Write 0 to bit 3: set second as counting unit.
write
[default]
Write 1 to bit 3: set minutes as counting unit
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 7: Write 1 to enable mouse to reset the
timer, 0 to disable.[default]
Bit 6: Write 1 to enable keyboard to reset the
timer, 0 to disable.[default]
read/write Bit 5: Write 1 to generate a timeout signal
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.
56