Flexible phase locked loop system

Details Flexible phase locked loop system Flexible phase locked loop system

1997-12-17

2000-08-15

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327154, 327162, H03L 706

Patent

active

061042226

ABSTRACT:
A stable and flexible phase locked loop system and method are disclosed. The system comprises a first phase frequency detector for detecting a difference between an internal clock signal and an external clock signal, and for generating a first control signal representing the difference. A first voltage controlled oscillator coupled to the first phase detector generates a first timing signal based on the first control signal. A first divider circuit coupled to the first voltage controlled oscillator divides the first timing signal by a first predetermined number to provide an output signal. A second phase frequency detector detects a difference between the first timing signal and a second timing signal, to generate a second control signal representing the difference. A second voltage controlled oscillator coupled to said second phase detector generates a third timing signal based on the second control signal. A second divider circuit coupled to the second voltage controlled oscillator divides the third timing signal by a second predetermined number to provide the second timing signal. A third divider circuit coupled to the second voltage controlled oscillator divides the third timing signal by a third predetermined number to provide the internal clock signal.

REFERENCES:
patent: 5144254 (1992-09-01), Wilke
patent: 5742208 (1998-04-01), Blazo
patent: 5889436 (1999-03-01), Yeung et al.

Affiliated with

Also associated with

Rating

Flexible phase locked loop system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flexible phase locked loop system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible phase locked loop system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2010839