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PHASE LOCKED LOOP AND METHOD FOR ADJUSTING THE FREQUENCY AND PHASE IN THE PHASE LOCKED LOOP

  • US 20070075785A1
  • Filed: 08/31/2006
  • Published: 04/05/2007
  • Est. Priority Date: 09/30/2005
  • Status: Active Grant
First Claim
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1. Phase locked loop comprising:

  • a phase frequency detector coupled with a time to digital converter capable of comparing a reference signal with an oscillator signal and of generating a digital value representing the phase difference between the reference signal and the oscillator signal;

    a state machine for phase acquisition capable of generating a control value depending on the digital value; and

    a controllable oscillator capable of generating the oscillator signal depending on the control value.

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