Datasheet

ACPI Devices
Intel
®
Atom™ Processor E6xx Series Datasheet
271
11.10.4.3 Reload Sequence
To keep the timer from causing an interrupt or driving GPIO[4], the timer must be
updated periodically. Other timers refer to “updating the timer” as “kicking the timer”.
The frequency of updates required is dependent on the value of the Preload values. To
update the timer the Register Unlocking Sequence must be performed followed by
writing a ‘1’ to bit 8 at offset BAR1 + 0Ch within the watchdog timer memory mapped
space. This sequence of events is referred to as the “Reload Sequence”.
11.10.4.4 Low Power State
The Watchdog Timer does not operate when PCICLK is stopped.
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