PACKET EXCHANGING DEVICE, CLOCK SIGNAL CONTROLLER FOR PACKET EXCHANGING DEVICE AND METHOD FOR CONTROLLING CLOCK SIGNAL

摘要

PROBLEM TO BE SOLVED: To provide a packet exchanging device capable of suppressing power consumption by controlling an operation speed so as to be able to realize processing performance corresponding to the traffic volume of a packet. SOLUTION: In this packet exchanging device 100 provided with a packet processing part 110 processing packet exchange, a transmission line interface 120 that is for connecting the part 110 to a transmission line and allowing the part 110 to transmit and receive a packet and a system clock control part 130 controlling the operation clock of the part 110 and the interface 120, the part 110 is provided with a packet counter 114 counting the number of packets per preliminarily set unit time, and the part 130 is provided with a frequency dividing circuit 132 which performs frequency division of an output signal of an oscillator 131 and outputs an operation clock and a frequency division control part 133 setting the frequency division ratio of the circuit 132 on the basis of the counting results of the counter 114.