Frequency-centric resonant rotary clock distribution network design

Abstract

A frequency-centric methodology is proposed for the selection of the physical parameters of the resonant rotary clock for a target frequency. This proposed methodology is performed once for each target frequency on a semiconductor technology, in order to create a cell library of resonant rotary clock design components. A case study is performed to demonstrate the efficiency of the proposed methodology in accuracy and run-time. Simulation results show that the frequency-centric design provides a good approximation for the resonant clock distribution network. At target frequencies between 4GHz and 6GHz, the frequency difference is less than 0.20% and the run-time is reduced by approximately 70% compared to the traditional HSPICE simulation of an entire SROA network without the proposed simplifications for run-time improvement.