| US 7,532,077 B2 | ||
| Edge alignment for frequency synthesizers | ||
| Stanley Wang, Cupertino, Calif. (US); and Thomas H. Lee, Burlingame, Calif. (US) | ||
| Assigned to ZeroG Wireless, Inc., Sunnyvale, Calif. (US) | ||
| Filed on May 08, 2007, as Appl. No. 11/801,199. | ||
| Prior Publication US 2008/0278243 A1, Nov. 13, 2008 | ||
| Int. Cl. H03L 7/00 (2006.01) | ||
| U.S. Cl. 331—1A [331/16; 331/34; 327/115; 327/156; 377/47] | 16 Claims |
| 1. A method of starting a frequency synthesizer that includes a program/swallow counter and a prescaler, comprising:
disabling elements, including the program/swallow counter and not the prescaler, of said frequency synthesizer prior to starting
said frequency synthesizer;
detecting a transition edge of a reference-clock signal of said frequency synthesizer; and
enabling the disabled elements of said frequency synthesizer substantially upon detection of said transition edge.
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