Hi All, This query is with respect to Spread spectrum clocking/PLL design. We see that modulation rate for Spread spectrum clocking will usually be 30KHz-33KHz. Is there any legacy reason or design constraint or any other reason for keeping the modulation rate at 33KHz instead of 10KHz or 100KHz etc.. Regards Vinod A H ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu