Region Oriented Routing FPGA Architecture for Dynamic Power Gating

Ce LI  Yiping DONG  Takahiro WATANABE  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E95-A   No.12   pp.2199-2207
Publication Date: 2012/12/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E95.A.2199
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category: Physical Level Design
FPGA,  low power,  switch box,  routing,  

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Dynamic power gating applicable to FPGA can reduce the power consumption effectively. In this paper, we propose a sophisticated routing architecture for a region oriented FPGA which supports dynamic power gating. This is the first routing solution of dynamic power gating for coarse-grained FPGA. This paper has 2 main contributions. First, it improves the routing resource graph and routing architecture to support special routing for a region oriented FPGA. Second, some routing channels are made wider to avoid congestion. Experimental result shows that 7.7% routing area can be reduced compared with the symmetric Wilton switch box in the region. Also, our proposed FPGA architecture with sophisticated P&R can reduce the power consumption of the system implemented in FPGA.