There is provided a PLL circuit including a phase comparison unit that compares an accumulated addition value of a division ratio converted into a digital value and that of an oscillating signal from an oscillator controlled by using the digital value in each cycle of a reference frequency, a data conversion...http://www.google.com/patents/US7948285?utm_source=gb-gplus-sharePatent US7948285 - PLL circuit, radio terminal device and control method of PLL circuit
PLL circuit, radio terminal device and control method of PLL circuit
