Samsung S5PC100, User Manual

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WATCHDOG TIMER S5PC100 USER’S MANUAL (REV1.0)
7.3-4
4.2 WATCHDOG TIMER DATA REGISTER (WTDAT, R/W, ADDRESS = 0XEA20_0004)
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) drives the
first time-out. In this case, the value of WTDAT is automatically reloaded into WTCNT.
WTDAT Bit Description Reset Value
Reserved [31:16] Reserved 0
Count reload value [15:0] Watchdog timer count value for reload. 0x8000
4.3 WATCHDOG TIMER COUNT REGISTER (WTCNT, R/W, ADDRESS = 0XEA20_0008)
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 if the watchdog
timer is enabled initially, therefore the WTCNT register must be set to an initial value before enabling it.
WTCNT Bit Description Reset Value
Reserved [31:16] Reserved 0
Count value [15:0] The current count value of the watchdog timer 0x8000
4.4 WATCHDOG TIMER INTERRUPT CLEAR REGISTER (WTCLRINT, W, ADDRESS = 0XEA20_000C)
The WTCLRINT register is used to clear the interrupt. Interrupt service routine is responsible for clearing the
relevant interrupt after the interrupt service is complete. Writing any values on this register clears the interrupt.
Reading this register is not allowed.
WTCLRINT Bit Description Reset Value
Interrupt clear [31:0] Write any values clears the interrupt -