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Impact of driver size and interwire parasitics on crosstalk noise and delay

Devendra Kumar Sharma (Department of Electronics and Communication Engineering, Meerut Institute of Engineering and Technology, Meerut, India)
Brajesh Kumar Kaushik (Department of Electronics and Computer Engineering, Indian Institute of Technology, Roorkee, India)
R.K. Sharma (Department of Electronics and Communication Engineering, National Institute of Technology, Kurukshetra, India)

Journal of Engineering, Design and Technology

ISSN: 1726-0531

Article publication date: 30 September 2014

104

Abstract

Purpose

The purpose of this research paper is to analyze the combined effects of driver size and coupling parasitics on crosstalk noise and delay for static and dynamically switching victim line. Furthermore, this paper shows the effect of inductance on delay and qualitatively optimizes its value to obtain minimum delay.

Design/methodology/approach

The interwire parasitics are the primary sources of crosstalk or coupled noise that may lead to critical delays/logic malfunctions. This paper is based on simulating a pair of distributed resistance inductance capacitance (RLC) interconnects coupled capacitively and inductively for measurements of crosstalk noise/delay. The combined effects of driver sizing and interwire parasitics on peak overshoot noise/delay are observed through simulation program with integrated circuit emphasis (SPICE) simulations for different switching patterns. Furthermore, the analysis of inductive effect on propagation delay as a function of coupling capacitance is carried out and the optimization of delay is worked out qualitatively. The simulations are carried out at 0.13 μm, 1.5 V technology node.

Findings

This paper observes the contradictory effects of coupling parasitics on wire propagation delay; however, the effect on peak noise is of a different kind. Further, this paper shows that the driver size exhibits opposite kind of behavior on propagation delay than peak over shoot noise. It is observed that the delay is affected in presence of inductance; thus, the optimization of delay is carried out.

Originality/value

The effects of driver sizing and interwire parasitics are analyzed through simulations. The optimum value of coupling capacitance for delay is found qualitatively. These findings are important for designing very large scale integration (VLSI) interconnects.

Keywords

Citation

Kumar Sharma, D., Kumar Kaushik, B. and Sharma, R.K. (2014), "Impact of driver size and interwire parasitics on crosstalk noise and delay", Journal of Engineering, Design and Technology, Vol. 12 No. 4, pp. 475-490. https://doi.org/10.1108/JEDT-08-2012-0036

Publisher

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Emerald Group Publishing Limited

Copyright © 2014, Emerald Group Publishing Limited

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