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- W2042006644 abstract "Under the current process and layer bonding technology for the TSV (through-silicon-via) based 3D ICs, it is known that the TSV resource is one of the major sources of the function failure of the chip. Furthermore, TSV takes much larger size and pitch than the normal logic components. For this reason, a careful allocation of the TSV resource has been required in 3D IC designs, and several works have been proposed to allocate minimal TSVs. This work also addresses the problem of TSV allocation and optimization, but overcomes one of the critical limitations of the previous works, which is the unawareness or no exploitation of the possibility of TSV resource sharing, previously merely resorting to a simple binding of the data transfers to TSVs. This is because the previous 3D layer partitioners have performed TSV allocation and minimization without any link to the data transfer information accessible from the high-level synthesis flow. This work proposes a set of TSV resource sharing and optimization algorithms (as a post-processing of 3D layer partitioning) by utilizing the life time information of the data transfers taken from the high-level synthesis. Specifically, we propose three algorithms for TSV resource sharing and optimization, which can be selectively applied depending on the sharing granularity and design complexity: (1) word-level TSV sharing, (2) bit-level TSV sharing, and (3) TSV refinement combined with register replication. Through experiments with benchmark designs, it is confirmed that our proposed algorithms are able to reduce the number of TSVs by 41.1% on average in word-level TSV sharing and 26.0% in bit-level TSV sharing compared with the results produced by the conventional layer partitioning with no TSV sharing while still meeting the timing constraint of designs." @default.
- W2042006644 created "2016-06-24" @default.
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- W2042006644 date "2014-03-01" @default.
- W2042006644 modified "2023-09-26" @default.
- W2042006644 title "Algorithms for TSV resource sharing and optimization in designing 3D stacked ICs" @default.
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- W2042006644 doi "https://doi.org/10.1016/j.vlsi.2013.11.001" @default.
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