User manual

12. Watchdog Timer
103
Watchdog Timer Reload Registers
The Watchdog Timer Reload registers are programmed with two word operations to set
the reload value. After a lockout sequence, these registers are write protected until after
the next reset or power cycle. A reload operation automatically transfers the contents of
the Watchdog Reload registers to the Watchdog Timer registers.
Register:
Access:
Address:
765432
10
15 14 13
12
11
10
9
8
WC31
WDT Reload High
F4C0h
Read and Write
Read after lockout
Current WDT Reload High
WR15 WR14 WR13
WR12
WR11
WR10 WR9 WR8
WR7 WR6 WR5 WR4 WR3 WR2 WR1 WR0
Register:
Access:
Address:
765432
10
15 14 13
12
11
10
9
8
WC31
Read and Write
Read after lockout
WR15 WR14 WR13
WR12
WR11
WR10 WR9 WR8
WR7 WR6 WR5 WR4 WR3 WR2 WR1 WR0
WDT Reload Low
F4C2h
Current WDT Reload Low
Watchdog Timer Reload Registers
ADDITIONAL INFORMATION
Refer to the Intel 386 EX data book for more information on the watchdog timer and the
associated operating modes. A product overview of the Intel 386 EX is available on
Intel's web site at http://developer.intel.com/design/intarch/prodbref/27270903.htm.