Patent ID: 7587184

Claim:
A method comprising: determining a frequency range corresponding to a least significant bit (LSB) of a first control word that controls a first capacitor bank of a controlled oscillator by applying an arbitrary value of the first control word to the first capacitor bank and measuring a first frequency of the controlled oscillator, adjusting the LSB of the arbitrary value of the first control word, and applying the adjusted first control word to the first capacitor bank and measuring a second frequency of the controlled oscillator, wherein the difference between the first and second frequencies corresponds to the frequency range; measuring a measured value of a second control word that controls a second capacitor bank of the controlled oscillator at which the second capacitor bank provides a capacitance value substantially corresponding to the frequency range by applying a first value of the second control word to the second capacitor bank, measuring a frequency of the controlled oscillator, wherein the capacitance value substantially corresponds to the frequency range if the measured frequency is greater than the second frequency, and otherwise iteratively adjusting the LSB of the first value, applying the adjusted first value, and measuring the frequency until the measured frequency substantially corresponds to the frequency range; and storing the measured value of the second control word.