[time-nuts] Where does the Z3801A 1 PPS come from?

Poul-Henning Kamp phk at phk.freebsd.dk
Mon Mar 14 08:24:55 EST 2005

In message <42358EEC.4090204 at febo.com>, John Ackermann N8UR writes:

>That's sure what I would have thought -- unless the CPU is being clocked 
>from the OCXO and thus is effectively transferring its stability to the 
>1pps (sort of like your PIC divider).  But I suspect it would be hard 
>for a CPU doing several tasks to maintain the cycle timing of a 
>dedicated divider.

Many CPU chips for the embedded environment have strong timer hardware
that makes such a task trivial.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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