hi, This is vamshi and i woking on All Digital Phase Locked Loop for my thesis. Could any one kindly give me some information or pointers for a Phase Detector which is compatible with K- counter accounting a better hold range. I know XOR, JK FF, PFD ( with an interface circuit), Two state Phase Detector. Thanks in advace. sincerely, vamshi " Awake, Arise and Stop not Until you achieve Sucess. " Swami Vivekananda L.Vamshi Krishna 832 Ridge Drive, Apt# 205, DeKalb, IL - 60015. 815-501-1528 (M) 815-787-1023 (H) Yahoo! India Mobile: Ringtones, Wallpapers, Picture Messages and more.Download now. ------------------------------------------------------------------ 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 archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu