| Summary: | 碩士 === 國立交通大學 === 電信工程研究所 === 103 === In this work, we proposed a TSV noise-aware &; density-aware technique based on
force-directed placement to reduce total noise and maximum peak noise of TSV in 3-D
IC global placement stage. The peak noise value, which may lead to function errors in
digital circuit design is relative to the TSV distribution in die area. In previous works,
the decoupling forces are used to reduce the total noise of TSVs, and the rough legalize
forces are used to improve the cell overlap. Then, we introduce the density force to
adjust the TSV density. The main idea of TSV density force is trying to push the TSVs
in high density bin to low density bin. In all experiments, the TSV coupling force
combine with TSV density force effectively reduces the maximum peak noise for
42.6% and the total noise for 15.0% in average and causes only 4.6% wirelength
overhead compared to wirelengh-driven placement, moreover, compares with the result
of decoupling forces only placement, the total noise and the maximum peak noise are
4.4% and 26.4% smaller respectively, and the wirlength is 0.9% shorter.
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