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US 2004/0104781 A1Published application
Configurable voltage controlled oscillator system and method
AssigneeBroadcom Corporation
InventorsMario Caresosa, Namik Kocaman, Afshin Momtaz
Life of this patent
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Abstract
A phase lock loop with multiple divider paths is presented herein. The phase lock loop can be used to provide a wide range of frequencies. The phase lock loop can also be used as a portion of a clock multiplier unit or a clock data and recovery unit.
Claims13
A phase lock loop comprising:
- a phase detector;
- a voltage controlled oscillator connected to the phase detector;
- a plurality of divider paths connected to said voltage controlled oscillator;
- and
- a multiplexer connected to said plurality of divider paths and said phase detector.
2 more elements
A phase lock loop system for synchronizing an input signal, said phase lock loop system comprising:
- a phase detector for comparing phases between the input signal and a feedback signal and providing a control signal, wherein the control signal is dependent on a difference in phase between the input signal and the feedback signal;
- a voltage controlled oscillator for generating a frequency signal, wherein the frequency signal is dependent on the control signal;
- a plurality of divider paths for dividing the frequency of the frequency signal;
- and
- a multiplexer for providing the feedback signal to the phase detector.
2 more elements
A method for providing output signals with a plurality of frequencies, said method comprising:
- comparing phases between an input signal and feedback signal;
- generating a frequency signal, wherein the frequency signal is dependent on the difference between the phase of the input signal and the feedback signal;
- dividing the frequency of the frequency signal by a plurality of factors.
Dependencies are inferred from the claim text.