Ah, and I just noticed that you had the H-Maser and Rb marked wrong On Thu, Dec 15, 2011 at 12:17 PM, Peter Bell <[email protected]> wrote: > 11.0592MHz is another crystal used for accurate baud rates - > especially on MCUs that had a 12MHz maximum clock (like the Intel > 8051) > So is 9.8304MHz - used on a number of Mototola (now Freescale) MCUs > 17.734475 is 4 times the PAL color burst frequency of 4.433619MHz > > I'll see if I can think of anything else. > > Regards, > > Pete > > > > On Thu, Dec 15, 2011 at 11:54 AM, Brooke Clarke <[email protected]> wrote: >> Hi Rex: >> >> Thanks, I had 14.7456 mis listed (off one row) as the 4X CB freq. I've >> updated the table. >> >> >> Have Fun, >> >> Brooke Clarke >> http://www.PRC68.com >> http://www.end2partygovernment.com/Brooke4Congress.html >> >> >> Rex wrote: >>> >>> Brooke, >>> >>> 14.31818 is 4x the analog color burst (~3.58) >>> >>> 18.432 divides cleanly for baud rates. I've used it as a PIC clock for >>> that. I think some of the others may be too, but I didn't recognize or do >>> the math to see. >>> >>> >>> On 12/14/2011 7:13 PM, Brooke Clarke wrote: >>>> >>>> Hi Pete: >>>> >>>> Maybe you can shed some light on the common xtal frequencies table where >>>> there's no explanation given? >>>> http://www.prc68.com/I/pdf/Crystal_Freq.pdf >>>> An answer is not it's an "even" frequency or "it's an even binary >>>> frequency. That's true for most of these and the factors are part of the >>>> table above. >>>> The question is why do they exist? >>>> such as: >>>> 32.0 kHz >>> >>> ... >>> >>> >>> >>> _______________________________________________ >>> 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.
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