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Low-power design methodology for module-wise dynamic voltage and frequency scaling with dynamic de-skewing systems

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7 Author(s)
Kitahara, T. ; Semicond. Co., Toshiba Corp., Kawasaki, Japan ; Hara, H. ; Shiratake, S. ; Tsukiboshi, Y.
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This paper discusses design methodology for a module-wise dynamic voltage and frequency scaling (DVFS) technique which adjusts the supply voltage for a module appropriately to reduce the power dissipation. A circuit is able to work even when the supply voltage is in transition, by using our dynamic de-skewing system (DDS). We propose a clock design methodology to minimize the intermodule clock skew for solving one of the major design issues in the module-wise DVFS. We also describe a method of determining the minimum supply voltage value for a module. We lead the issue to a problem of solving simultaneous polynomial inequalities. Our experimental results show that the module-wise DVFS can reduce 53% power compared with the chip-wise DVFS, and 17% more reduction was achieved by applying the minimum supply voltage proposed.

Published in:

Design Automation, 2006. Asia and South Pacific Conference on

Date of Conference:

24-27 Jan. 2006

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