Patent ID: 8237477
Filing Date: 2012-08-07
Classification: H03L

Abstract:
1. A programmable clock generator suitable to be used in dynamic-voltage-and-frequency-scaling (DVFS) operated in Sub- and Near-Threshold region, comprising: a first pulse generating unit means for receiving an input signal having an input frequency in order to generate a first pulse signal with a first phase and a first frequency; and a pulse multiplier means for connecting the first pulse generating unit, the pulse multiplier comprising: wherein, when the first counting value calculated by the first counting unit being 8, the first counting unit generating the first counting signal to control the phase detector comparing a phase difference between the first pulse signal and the second pulse signal in order to transmit the phase difference signal to the control unit, the control unit transmitting the first control signal to the lock-in delay unit in accordance with the phase difference signal, and controlling the lock-in delay unit to adjust the phase of the second pulse signal, so that a predetermined phase being generated between the first pulse signal and the second pulse signal.