Paper Abstract and Keywords |
Presentation |
2019-01-23 13:30
Development of 30-GHz Datapath for Bit-Parallel, Gate-Level-Pipelined Rapid Single-Flux-Quantum Microprocessors Ikki Nagaoka (Nagoya Univ), Yuki Hatanaka (Mitsubishi Elec), Yuichi Matsui (Nagoya Univ), Koki Ishida (Kyushu Univ), Masamitsu Tanaka, Kyosuke Sano, Taro Yamashita (Nagoya Univ), Takatsugu Ono, Koji Inoue (Kyushu Univ), Akira Fujimaki (Nagoya Univ) SCE2018-30 Link to ES Tech. Rep. Archives: SCE2018-30 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We have started development of high-throughput single-flux-quantum (SFQ) microprocessors with the aim of higher throughput performance beyond CMOS microprocessors. All of the demonstrated microprocessors based on SFQ logic employed bit-serial processing. The bit-serial processing leads to reduction of complexity and ease of design, but it limits throughput. It is necessary to introduce bit-parallel processing for obtaining higher throughput beyond CMOS microprocessors. We can expect significant improvement in the throughput performance by introducing bit-parallel processing and a gate-level pipelined structure, in which pipeline processing is performed logic gate by logic gate. In this study, to realize bit-parallel SFQ microprocessors, we designed and evaluated a datapath that was the most complex circuit in a microprocessor. We integrated an arithmetic logic unit (ALU) and a register file to increase the operation frequency. We confirmed correct operation of addition and subtraction instructions and part of write-back operation of the register file up to approximately 30GHz. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
SFQ circuit / Micorprocessor / Gate-level-pipeline / Bit-parallel processing / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 118, no. 415, SCE2018-30, pp. 29-34, Jan. 2019. |
Paper # |
SCE2018-30 |
Date of Issue |
2019-01-16 (SCE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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SCE2018-30 Link to ES Tech. Rep. Archives: SCE2018-30 |
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