[time-nuts] Using a frequency synthesizer replacement for motherboard oscillator
Jim Welch
welch20 at comcast.net
Sat Dec 1 01:06:02 UTC 2012
OK, I'll bite. Why?
Jim
>>>I've never done it using to the RTC crystal, but I do it quite
frequently in my Day Job to >>>Ethernet controllers on those same pc mother
boards.
>>>
>>>-Eric
On Fri, Nov 30, 2012 at 4:10 PM, Sarah White <kuzetsa at gmail.com> wrote:
> On 11/30/2012 6:30 PM, Eric Garner wrote:
> > the actual RTC on modern (Intel based) PC's is driven from a
> > standard
> > 32,768 Hz crystal attached to the PCH. some of them are in
> > incredibly
> small
> > packages now instead of the old tuning fork-in-a-can ones. peeling
> > off
> the
> > load caps and crystal from the board would allow you plenty of
> > spaces to tack down a lead from an external synthesizer.
>
> Yeah, the one on the (Soekis) example was pretty small. So far none of
> of the replies have indicated that anyone on here has experience
> beyond an embedded system.
>
> Mostly I started this thread because there have been a few with people
> discussing implementing NTP on embedded microcontrollers, arduino, etc.
> and I was thinking of doing it from the other side (turning a nice-ish
> server into a rock-solid timekeeper)
>
> Thanks so far everyone. Really impressed that I already managed to get
> 4x replies so quickly :)
>
>
>
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--
--Eric
_________________________________________
Eric Garner
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