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首页> 外文期刊>Japanese journal of applied physics >A free-extendible and ultralow-power nonvolatile multi-core associative coprocessor based on MRAM with inter-core pipeline scheme for large-scale full-adaptive nearest pattern searching
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A free-extendible and ultralow-power nonvolatile multi-core associative coprocessor based on MRAM with inter-core pipeline scheme for large-scale full-adaptive nearest pattern searching

机译：基于MRAM的自由伸展和超高功率非竞争多核关联协作者，具有用于大规模全自适应最近模式搜索的内核跨核心管道方案

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摘要

A nonvolatile multi-core associative coprocessor based on the MRAM is developed with open-end design, which achieves the higher power efficiency maintaining the high circuit density, full adaptivity and high-speed at the same time. This proposed coprocessor is proposed applicable for searching nearest pattern from the large-scale normal/pre-clustered data sets. An inter-core pipeline operation scheme is implemented, which absorbs the delay of in-core time-domain minimum searching to ensure the high-speed and flexibly extends the coprocessor by increasing the core count, A self-optimized power gating scheme is also employed, which minimizes the operation power and further reduces it when the cluster number (K) becomes larger. The prototype chip with 12-core is designed and fabricated under 90 nm CMOS/70 nm perpendicular-MTJ hybrid technology, and the chip operation at 100 MHz is demonstrated by measurement results. The average operation power is only 68 mu W @K = 24, and more than 40-time higher power efficiency is achieved comparing to the latest conventional researches. (C) 2020 The Japan Society of Applied Physics
机译：基于MRAM的非易失性多核关联协处理器采用开口设计开发，实现了较高的功率效率，同时保持高电路密度，完全适应性和高速。提出了该建议的协处理器，适用于从大规模的正常/预簇数据集搜索最近的模式。实现了核心间流水线操作方案，其吸收核心时间域最小搜索的延迟，以通过增加核心计数来确保高速并灵活地扩展协处理器，该自动功率门控方案也采用，最小化操作功率，并且当簇数（k）变大时进一步减少它。具有12芯的原型芯片在90nm CMOS / 70 nm垂直-MTJ混合技术下设计和制造，并通过测量结果证明了100 MHz的芯片操作。平均操作功率仅为68μW@k = 24，与最新的传统研究相比，实现了超过40次的功率效率。 （c）2020日本应用物理学会

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  • 来源
    《Japanese journal of applied physics》 |2020年第sg期|SGGB18.1-SGGB18.11|共11页
  • 作者

    Ma Yitao; Miura Sadahiko; Honjo Hiroaki; Ikeda Shoji; Endoh Tetsuo;

  • 作者单位

    Tohoku Univ Elect Commun Res Inst Aoba Ku Sendai Miyagi 9808577 Japan|Tohoku Univ Ctr Innovat Integrated Elect Syst Aoba Ku Sendai Miyagi 9800845 Japan|Tohoku Univ Grad Sch Engn Aoba Ku Sendai Miyagi 9808579 Japan;

    Tohoku Univ Ctr Innovat Integrated Elect Syst Aoba Ku Sendai Miyagi 9800845 Japan;

    Tohoku Univ Ctr Innovat Integrated Elect Syst Aoba Ku Sendai Miyagi 9800845 Japan;

    Tohoku Univ Ctr Innovat Integrated Elect Syst Aoba Ku Sendai Miyagi 9800845 Japan;

    Tohoku Univ Elect Commun Res Inst Aoba Ku Sendai Miyagi 9808577 Japan|Tohoku Univ Ctr Innovat Integrated Elect Syst Aoba Ku Sendai Miyagi 9800845 Japan|Tohoku Univ Grad Sch Engn Aoba Ku Sendai Miyagi 9808579 Japan|Tohoku Univ CSIS Aoba Ku Sendai Miyagi 9808577 Japan;

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