System and method for automatic clock frequency acquisition

摘要: A system and method are provided for automatically acquiring a serial data stream clock. The receives with an unknown clock frequency coarsely determines the frequency. is determined by (initially) selecting high first reference (Fref 1 ), counting number of transitions in time segment at plurality sample frequencies equal to Fref /n, where n integer ≧1. count each sampling compared (n=1). Next, highest (n=x) determined, which has lower than , coarse set Fc =Fref /(x−1).