ARK-5260 User Manual
58
Table A.1: Watchdog Timer Registers
Address of
register (2E)
Attribute
Read/Write
Value (2F) and
description
87 (hex)
-----
Write this address to I/O address port 2E (hex) twice to
unlock theW83627DHG-P
07 (hex)
write
Write 08 (hex) to select register of watchdog timer.
30 (hex)
write
Write 01 (hex) to enable the function of the watchdog
timer. Disabled is set as default.
F5 (hex)
write
Set seconds or minutes as units for the timer.
Write 0 to bit 3:
set second as
counting unit.
[default]
Write 1 to bit 3:
set minute as
counting unit
F6 (hex)
write
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 regis-
ter can reset the timer to count with the new value.
F7 (hex)
read/write
Bit 6: Write 1 to enable keyboard to reset the timer, 0 to
disable.[default]
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
""time out""."
AA (hex)
-----
Write this address to I/O port 2E (hex) to lock the watch-
dog timer.2
Summary of Contents for ARK-5260
Page 1: ...User Manual ARK 5260 Embedded IPC...
Page 8: ...ARK 5260 User Manual viii...
Page 12: ...ARK 5260 User Manual xii...
Page 13: ...Chapter 1 1 General Introduction This chapter gives background information on ARK 5260...
Page 36: ...ARK 5260 User Manual 24...
Page 37: ...Chapter 3 3 AMI BIOS Setup This chapter introduces how to set BIOS configuration data...
Page 55: ...Chapter 4 4 Software installation This chapter introduces driver installation...
Page 67: ...Appendix A A Programming the Watchdog Timer...