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Dynamic Current Modeling at the Instruction Level

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3 Author(s)
Rizo-Morente, J. ; Sch. of Comput. Sci. & Informatics, UCD, Dublin ; Casas-Sanchez, M. ; Bleakley, C.J.

Estimation of processor current consumption is important for the design of low power systems. This paper proposes a novel method for estimating the dynamic current consumption of a processor. The method models dynamic current as the output of a linear system excited by a signal comprised of the total current due to each instruction. System identification is performed by cross-correlation of a pseudo-random stimulus with the measured current. The method was applied to the Texas Instruments TMS320VC5510 DSP and was found to provide an average correlation of 93% between estimated and measured dynamic current across a range of benchmarks

Published in:

Low Power Electronics and Design, 2006. ISLPED'06. Proceedings of the 2006 International Symposium on

Date of Conference:

4-6 Oct. 2006