A fast and accurate delay estimation method for buffered interconnects

Youxin Gao, D. F. Wong

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

7 Citations (Scopus)

Abstract

In this paper, we present a fast and accurate delay estimation method for buffered interconnects. The interconnect wire is modeled by the transmission line model which is more accurate and efficient than lumped circuit model. For the interconnect wire, we specify the wire shape to be of the form f(x) = ae-bx. Note that if we let b = 0, our work is reduced to uniform wire case. By using first three poles in the transfer function, we derive analytical expressions for calculating delay at any threshold voltage under a finite ramp input. The expressions involved in calculating coefficients in the transfer function are also analytical. We use k-factor equations to estimate delays for buffers. Since the k-factor equations require a loading capacitance for delay computation, we use the effective capacitance technique introduced in [17] to calculate the effective capacitance for each interconnect wire which is connected to a buffer. Therefore, our delay calculation for buffered interconnects is analytical and thus very efficient. Our experiments show that signal waveforms estimated by our method are very close to SPICE's results.

Original languageEnglish
Title of host publicationProceedings of The 6th Asia and South Pacific Design Automation Conference, ASP-DAC 2001
Place of PublicationUnited States
PublisherAssociation for Computing Machinery (ACM)
Pages533-538
Number of pages6
ISBN (Print)9780780366343
DOIs
Publication statusPublished - Jan 2001
Event6th Asia and South Pacific Design Automation Conference, ASP-DAC 2001 - Conference Center, Pacifico Yokohama, Yokohama, Japan
Duration: 30 Jan 20012 Feb 2001
https://www.aspdac.com/2001/ (Conference website )
https://www.aspdac.com/2001/eng/ap/techprg2001.pdf (Conference program)
https://dl.acm.org/doi/proceedings/10.1145/370155 (Conference proceedings)

Publication series

NameProceedings of The Asia and South Pacific Design Automation Conference, ASP-DAC
ISSN (Print)2153-6961
ISSN (Electronic)2153-697X

Conference

Conference6th Asia and South Pacific Design Automation Conference, ASP-DAC 2001
Country/TerritoryJapan
CityYokohama
Period30/01/012/02/01
Internet address

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