OK, I'll try to rewrite and test that section. On Fri, Mar 1, 2013 at 2:28 PM, Javier Serrano < [email protected]> wrote:
> On Fri, Mar 1, 2013 at 10:40 AM, Azelio Boriani > <[email protected]> wrote: > > The metastability from the PPS latching the counter is indeed a problem: > > rarely do I see out of range numbers and have to filter them out. > > You cannot filter them out. One time you will have bit 10 wrong and > you will be able to detect that, but what if it's bit 3, or bit 2, or > both? How can you know? What I proposed in a previous message solves > your problem: get the PPSReference signal into the Clk10MHz domain > before using it. This is the tried and proven way to deal with > metastability. I can provide a code snippet later if needed. > > Cheers, > > Javier > _______________________________________________ > 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. > _______________________________________________ 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.
