Low Power Design has become a significant requirement when the CMOS technology entered the nanometer era. Multiple-Supply Voltage (MSV) is a popular and effective method for both dynamic and static power reduction while maintaining performance. Level shifters may cause area and Interconnect Length Overhead (ILO), and should be considered at both floorplanning and post-floorplanning stages. In this paper, we propose a two phases algorithm framework, called VLSAF, to solve voltage and level shifter assignment problem. At floorplanning phase, we use a convex cost network flow algorithm to assign voltage and a minimum cost flow algorithm to handle level-shifter assignment. At post-floorplanning phase, a heuristic method is adopted to redistribute white spaces and calculate the positions and shapes of level shifters. The experimental results show VLSAF is effective.
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Bei YU, Sheqin DONG, Song CHEN, Satoshi GOTO, "Voltage and Level-Shifter Assignment Driven Floorplanning" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 12, pp. 2990-2997, December 2009, doi: 10.1587/transfun.E92.A.2990.
Abstract: Low Power Design has become a significant requirement when the CMOS technology entered the nanometer era. Multiple-Supply Voltage (MSV) is a popular and effective method for both dynamic and static power reduction while maintaining performance. Level shifters may cause area and Interconnect Length Overhead (ILO), and should be considered at both floorplanning and post-floorplanning stages. In this paper, we propose a two phases algorithm framework, called VLSAF, to solve voltage and level shifter assignment problem. At floorplanning phase, we use a convex cost network flow algorithm to assign voltage and a minimum cost flow algorithm to handle level-shifter assignment. At post-floorplanning phase, a heuristic method is adopted to redistribute white spaces and calculate the positions and shapes of level shifters. The experimental results show VLSAF is effective.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.2990/_p
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@ARTICLE{e92-a_12_2990,
author={Bei YU, Sheqin DONG, Song CHEN, Satoshi GOTO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Voltage and Level-Shifter Assignment Driven Floorplanning},
year={2009},
volume={E92-A},
number={12},
pages={2990-2997},
abstract={Low Power Design has become a significant requirement when the CMOS technology entered the nanometer era. Multiple-Supply Voltage (MSV) is a popular and effective method for both dynamic and static power reduction while maintaining performance. Level shifters may cause area and Interconnect Length Overhead (ILO), and should be considered at both floorplanning and post-floorplanning stages. In this paper, we propose a two phases algorithm framework, called VLSAF, to solve voltage and level shifter assignment problem. At floorplanning phase, we use a convex cost network flow algorithm to assign voltage and a minimum cost flow algorithm to handle level-shifter assignment. At post-floorplanning phase, a heuristic method is adopted to redistribute white spaces and calculate the positions and shapes of level shifters. The experimental results show VLSAF is effective.},
keywords={},
doi={10.1587/transfun.E92.A.2990},
ISSN={1745-1337},
month={December},}
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TY - JOUR
TI - Voltage and Level-Shifter Assignment Driven Floorplanning
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2990
EP - 2997
AU - Bei YU
AU - Sheqin DONG
AU - Song CHEN
AU - Satoshi GOTO
PY - 2009
DO - 10.1587/transfun.E92.A.2990
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2009
AB - Low Power Design has become a significant requirement when the CMOS technology entered the nanometer era. Multiple-Supply Voltage (MSV) is a popular and effective method for both dynamic and static power reduction while maintaining performance. Level shifters may cause area and Interconnect Length Overhead (ILO), and should be considered at both floorplanning and post-floorplanning stages. In this paper, we propose a two phases algorithm framework, called VLSAF, to solve voltage and level shifter assignment problem. At floorplanning phase, we use a convex cost network flow algorithm to assign voltage and a minimum cost flow algorithm to handle level-shifter assignment. At post-floorplanning phase, a heuristic method is adopted to redistribute white spaces and calculate the positions and shapes of level shifters. The experimental results show VLSAF is effective.
ER -