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Published in:
2013 | OriginalPaper | Chapter
A Method of Balancing the Global Multi-mode Clock Network in Ultra-large Scale CPU
Authors : Zhuo Ma, Zhenyu Zhao, Yang Guo, Lunguo Xie, Jinshan Yu
Published in: Computer Engineering and Technology
Publisher: Springer Berlin Heidelberg
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It is a long-time discussed problem that the balancing of global multi-mode clock tree is. And there are many potential problems caused by the unbalanced clock tree, such as timing violations, density and power comsuption. In this article, an innovative balance method is opened by adopting the redundance clock mux. The basic idea of it is to maximize the reuse of the clock tree for other modes and keep the sub-clock tree within the sub-blocks unchanged. A demo chip on 40nm process has this balance skill verified, and makes the density, leakage and power comsuption deeply decreased.