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IEEE Computer Society Annual Symposium on VLSI (ISVLSI '07)
A Flexible Datapath Interconnect for Embedded Applications
Porto Alegre, Brazil
March 09-March 11
ISBN: 0-7695-2896-1
Magnus Sjalander, Chalmers University of Technology, SE-412 96 G?oteborg, Sweden
Per Larsson-Edefors, Chalmers University of Technology, SE-412 96 G?oteborg, Sweden
Magnus Bjork, Chalmers University of Technology, SE-412 96 G?oteborg, Sweden
We investigate the effects of introducing a flexible interconnect into an exposed datapath. We define an exposed datapath as a traditional GPP datapath that has its normal control removed, leading to the exposure of a wide control word. For an FFT benchmark, the introduction of a flexible interconnect reduces the total execution time by 16%. Compared to a traditional GPP, the execution time for an exposed datapath using a flexible interconnect is 32% shorter whereas the energy dissipation is 29% lower. Our investigation is based on a cycleaccurate architectural simulator and figures on delay, power, and area are obtained from placed-and-routed layouts in a commercial 0.13-?m technology. The results from our case studies indicate that by utilizing a flexible interconnect, significant performance gains can be achieved for generic applications.
Citation:
Magnus Sjalander, Per Larsson-Edefors, Magnus Bjork, "A Flexible Datapath Interconnect for Embedded Applications," isvlsi, pp.15-20, IEEE Computer Society Annual Symposium on VLSI (ISVLSI '07), 2007
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