Samsung S3C6400X User Manual page 1060

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 Address
WTDAT 0x7E004004
WTDAT Bit
Count reload value [15:0]
WATCHDOG TIMER COUNT (WTCNT) REGISTER
The WTCNT register contains the current count values for the watchdog timer during normal operation.
Note: 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 Address
WTCNT 0x7E004008
WTCNT Bit
Count value [15:0]
WATCHDOG TIMER INTERRUPT CLEAR (WTCLRINT) REGISTER
The WTCLRINT register is used to clear the interrupt. Interrupt service routine is responsible for clearing the
relevant interrupt after the interrupt service is completed. Writing any values on this register clears the interrupt.
Reading this register is not allowed.
Register Address
WTCLRINT 0x7E00400c
WTCLRINT Bit
Interrupt clear [0]
34-4
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
R/W Description
R/W Watchdog timer data register
Description
Watchdog timer count value for reload.
R/W Description
R/W Watchdog timer count register
Description
The current count value of the watchdog timer
R/W Description
W Watchdog timer interrupt clear register
Description
Write any values clears the interrupt
S3C6400 RISC MICROPROCESSOR
Reset Value
0x8000
Initial State
0x8000
Reset Value
0x8000
Initial State
0x8000
Reset Value
-
Initial State
-