DEVICE AND METHOD FOR CONTROLLING CLOCK GATING IN DIGITAL SYSTEM

摘要

PURPOSE: A device and a method for controlling a clock gating operation are provided to effectively reduce power source using the clock gating operation in a wide range. CONSTITUTION: A unit part(100) is composed of a plurality of units which processes signal using a clock or clock controlling signal. Bouncing detectors(200, 300) are connected between driving power source and the unit part. The bouncing detectors detect the bounce of a power line under the clock gate state of the unit part. A gating controller(400) analyzes the detected bounce and determines the number of units to be turned-off. The gating controller transmits the clock controlling signal to control the clock gate operation.