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Calibration device and method for generating a clock in an integrated circuit

  • US 20030095008A1
  • Filed: 12/16/2002
  • Published: 05/22/2003
  • Est. Priority Date: 06/15/2000
  • Status: Active Grant
First Claim
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1. A calibration device for generating a clock in an integrated circuit, comprising:

  • a device for generating clock signals disposed in the integrated circuit, said device generating both an internal clock and a target clock;

    a reference oscillator having selectably an active state and a passive state, said reference oscillator supplying a reference clock in the active state; and

    a calibration circuit connected to said device and said reference oscillator and receiving the internal clock and the reference clock, said calibration circuit determining a clock ratio between the internal clock and the reference clock;

    said device for generating clock signals having means for influencing the target clock in dependence on the clock ratio determined by said calibration circuit, said means for influencing the target clock coupled to said calibration circuit.

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