Table A.1:Watchdog Timer Registers - Advantech PCA-6184 User Manual

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 sec-
ond as counting unit.
[default]
Write 1 to bit 3: set
minute as counting unit
F6 (hex)
PCA-6184 User's Manual
Attribute
Value (2F) and
description
-----
write
write
write
write
84
Write this address to I/O
address port 2E (hex)
twice to unlock
theW83627HF
Write 08 (hex) to select
register of watchdog
timer.
Write 01 (hex) to enable
the function of the
watchdog timer. Dis-
abled is set as default.
Set seconds or minutes
as units for the timer.
0: stop timer [default]
01~FF (hex): The
amount of the count, in
seconds or minutes,
depends on the value
set in register F5 (hex).
This number decides
how 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.