NDLI: An LOCV-based static timing analysis considering spatial correlations of power supply variations

Content Provider	IEEE Xplore Digital Library
Author	Kobayashi, S. Horiuchi, K.
Copyright Year	2011
Description	Author affiliation: Platform Integration Division, Technology Development Unit, Renesas Electronics Corporation, Kawasaki, Japan (Kobayashi, S.; Horiuchi, K.)
Abstract	As the operating frequency of LSI becomes higher and the power supply voltage becomes lower, the on-chip power supply variation has become a dominant factor which influences the signal delay of the circuits. The static timing analysis (STA) considering on-chip power supply variations (IR-drop) is therefore one of the most crucial issues in the LSI designs nowadays. We propose an efficient STA method to consider on-chip power supply variations in the static timing analysis by utilizing the spatial correlations of IR-drop. The proposed method is based on the widely-used technique in STA considering OCV (on-chip variations), which is called LOCV (Location-based OCV) technique, and therefore our method is easy to be incorporated into the existing timing analysis flow. The proposed method is evaluated by using test data including H-tree clock structure with various on-chip IR-drop distributions. The experimental results show that the proposed method can reduce the design margin with respect to power supply variations by 6–85% (47% on the average) compared with the conventional practical approach with a constant OCV derating factor, while requiring no additional computation cost in the static timing analysis. Thus the proposed method can contribute to a fast timing closure considering on-chip power supply variations.
Starting Page	1
Ending Page	4
File Size	142680
Page Count	4
File Format	PDF
ISBN	9781612842080
ISSN	15301591
e-ISBN	9783981080186
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-14
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	European Design Automation Association (EDAA)
Subject Keyword	OCV static timing analysis power supply variation
Content Type	Text
Resource Type	Article

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