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. _______________________________________________ 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.
