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Fast Methods to Estimate Clock Jitter due to Power Supply Noise
Koutaro HACHIYA Takayuki OHSHIMA Hidenari NAKASHIMA Masaaki SODA Satoshi GOTO
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/04/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 19th Workshop on Circuits and Systems in Karuizawa)
clock jitter, power supply noise, clock distribution network, power distribution network,
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In this paper, we propose two methods to estimate clock jitter caused by power supply noise in a LSI (Large-Scale Integrated circuit). One of the methods enables estimation of clock jitter at the initial design stage before floor-planning. The other method reduces simulation time of clock distribution network to analyze clock jitter at the design verification stage after place-and-route of the chip. For an example design, the relative difference between clock jitter estimated at the initial design stage and that of the design verification stage is 23%. The example result also shows that the proposed method for the verification stage is about 24 times faster than the conventional one to analyze clock jitter.