[time-nuts] iPhone keeping better time?

David J Taylor david-taylor at blueyonder.co.uk
Thu Nov 17 01:11:52 EST 2011


>> Chris, I can see your point, but these devices must have a CPU running 
>> all
>> the time, otherwise how would the soft power-up work?
>
> The ARM processor has a power manager that wakes the CPU and powers it
> up when events like a WiFi packet comes in or there is some input by
> the user.   The CPU is not left running.   watching for these kind of
> evens is done by a much smaller chip
>
>
> Chris Albertson
> Redondo Beach, California

Thanks, Chris.  That's why I wrote "a CPU" rather than "the CPU".

Cheers,
David
-- 
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Email:  david-taylor at blueyonder.co.uk 





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