| 摘要 |
A semiconductor device includes a clock-and-data recovery circuit including a phase tracking loop that generates a phase difference signal indicating a phase difference between a reception clock generated from a transmission clock and an input signal and makes the reception clock track the input signal, a frequency tracking loop that performs control to make a frequency of the reception clock track a frequency of the input signal, the clock-and-data recovery circuit being configured to extract a data signal and a synchronization clock from the input signal and to control a phase and a frequency of the reception clock, a frequency error adjuster that increases or decreases a value indicated by a frequency adjustment signal according to a frequency difference signal generated based on the phase difference signal, and an oscillator that increases or decreases a frequency of the transmission clock based on the frequency adjustment signal. |
