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«Static Crosstalk-Noise Analysis: For Deep Sub-Micron Digital Designs (Solid Mechanics & Its Applications)»
Pinhong Chen / Desmond A. Kirkpatrick / Kurt Keutzer | Springer | ISBN:1402080913 | 1 ed. (June 7, 2004) | 113 pages | PDF | 6 Mb
As the feature size decreases in deep sub-micron designs, couplingcapacitance becomes the dominant factor in total capacitance. Theresulting crosstalk noise may be responsible for signal integrityissues and significant timing variation. Traditionally, static timinganalysis tools have ignored cross coupling effects between wiresaltogether. Newer tools simply approximate the coupling capacitance bya 2X Miller factor in order to compute the worst case delay. The latterapproach not only reduces delay calculation accuracy, but can also beshown to underestimate the delay in certain scenarios.
This book describes accurate but conservative methods for computingdelay variation due to coupling. Furthermore, most of these methods arecomputationally efficient enough to be employed in a static timinganalysis tool for complex integrated digital circuits. To achieveaccuracy, a more accurate computation of the Miller factor is derived.To achieve both computational efficiency and accuracy, a variety ofmechanisms for pruning the search space are detailed, including:
-Spatial pruning - reducing aggressors to those in physical proximity,
-Electrical pruning - reducing aggressors by electrical strength,
-Temporal pruning - reducing aggressors using timing windows,
-Functional pruning - reducing aggressors by Boolean functional analysis.
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发表于 2010-1-21 06:26:42
