Samsung S3C2451X User Manual page 312

WATCHDOG TIMER
WATCHDOG TIMER DATA (WTDAT) REGISTER
The WTDAT register is used to specify the time-out duration. The content of WTDAT cannot be automatically
loaded into the timer counter at initial watchdog timer operation. However, using 0x8000 (initial value) will drive
the first time-out. In this case, the value of WTDAT will be automatically reloaded into WTCNT.
Register
WTDAT 0x53000004
WTDAT Bit
Count reload [15:0] Watchdog timer count value for reload.
value
WATCHDOG TIMER COUNT (WTCNT) REGISTER
The WTCNT register contains the current count values for the watchdog timer during normal operation.
Note that the content of the WTDAT register cannot be automatically loaded into the timer count register when
the watchdog timer is enabled initially, so the WTCNT register must be set to an initial value before enabling it.
Register
WTCNT 0x53000008
WTCNT Bit
Count value [15:0] The current count value of the watchdog timer
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
12-4
Specifications and information herein are subject to change without notice.
Address R/W
R/W Watchdog timer data register
Address R/W
R/W Watchdog timer count register
S3C2451X RISC MICROPROCESSOR
Description
Description
Description
Description
Reset Value
0x8000
Initial State
0x8000
Reset Value
0x8000
Initial State
0x8000