CLOCK AND DATA RECOVERY SYSTEM FOR RECOVERING CLOCKS CORRESPONDING TO VARIABLE DATA TRANSMISSION RATE IN DATA TRANSMISSION PROCESS

摘要

PURPOSE: A clock and data recovery system for recovering clocks corresponding to a variable data transmission rate in a data transmission process is provided to recover errorless data and clocks in a transmission/reception process of variable data such as digital video data. CONSTITUTION: A reference clock generator(21) generates a reference clock by dividing a basic clock into a first predetermined value, synchronizing the divided clock, and multiplying the synchronized clock by a second predetermined value. A clock and data recovery unit(22) recovers a clock of inputted data by using the reference clock and outputs the recovered clock and the inputted data. A controller(23) generates a control signal for the clock and data recovery unit according to a variable transmission rate.