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Interconnect capacitance estimation for FPGAs

Published: 27 January 2004 Publication History

Abstract

The dynamic power consumed by a digital CMOS circuit is directly proportional to capacitance. In this paper, we consider pre-routing capacitance estimation for FPGAs and develop an empirical estimation model, suitable for use in power-aware placement, early power prediction, and other applications. We show that estimation accuracy is improved by considering aspects of the FPGA interconnect architecture in addition to generic parameters, such as net fanout and bounding box perimeter length. We also show that there is an inherent variability (noise) in the capacitance of nets routed using a commercial FPGA layout tool. This variability limits the accuracy attainable in capacitance estimation. Experimental results show that the proposed estimation model works well given the noise limitations.

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Cited By

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  • (2019)Leakier WiresACM Transactions on Reconfigurable Technology and Systems10.1145/332248312:3(1-29)Online publication date: 23-Aug-2019
  • (2018)Leaky WiresProceedings of the 2018 on Asia Conference on Computer and Communications Security10.1145/3196494.3196518(15-27)Online publication date: 29-May-2018
  • (2009)Floorplan-based FPGA interconnect power estimation in DSP circuitsProceedings of the 11th international workshop on System level interconnect prediction10.1145/1572471.1572481(53-60)Online publication date: 26-Jul-2009
  • Show More Cited By
  1. Interconnect capacitance estimation for FPGAs

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    cover image ACM Conferences
    ASP-DAC '04: Proceedings of the 2004 Asia and South Pacific Design Automation Conference
    January 2004
    957 pages
    ISBN:0780381750

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    IEEE Press

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    Published: 27 January 2004

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    View all
    • (2019)Leakier WiresACM Transactions on Reconfigurable Technology and Systems10.1145/332248312:3(1-29)Online publication date: 23-Aug-2019
    • (2018)Leaky WiresProceedings of the 2018 on Asia Conference on Computer and Communications Security10.1145/3196494.3196518(15-27)Online publication date: 29-May-2018
    • (2009)Floorplan-based FPGA interconnect power estimation in DSP circuitsProceedings of the 11th international workshop on System level interconnect prediction10.1145/1572471.1572481(53-60)Online publication date: 26-Jul-2009
    • (2006)Modelling macromodules for high-level dynamic power estimation of FPGA-based digital designsProceedings of the 2006 international symposium on Low power electronics and design10.1145/1165573.1165609(151-154)Online publication date: 4-Oct-2006

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