Hoi Bob, On Tue, 1 Jan 2013 12:03:49 -0500 Bob Camp <[email protected]> wrote:
> On Jan 1, 2013, at 11:34 AM, Attila Kinali <[email protected]> wrote: > > > What about those uC that use a VCO that runs up at several 100MHz (i've > > seen up to 800MHz) and devide it down to what they actually need. > > Shouldnt this improve jitter quite considerably? > Most of the small micro's don't get very fancy on the clock chain. > You are lucky if the VCO is running at twice the CPU clock. In some > cases the input capture(s) (and PWM's) are running directly on the > VCO (at say 72 MHz) and the CPU is running at half or a quarter of that. That's why i was specifically asking about those uC which use a higher frequency VCO for their clock generation. Ie not the tiny 8bit stuff, but those in the ARM7/Cortex-M3 class. Attila Kinali -- There is no secret ingredient -- Po, Kung Fu Panda _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
