講演抄録/キーワード |
講演名 |
2020-01-17 13:15
[ポスター講演]Methodology for Automating Data Feedback Circuit Synthesis for a 4- bit Counter in Adiabatic Quantum-Flux-Parametron Logic ○Ro Saito(YNU)・Christopher L. Ayala・Olivia Chen(YNU IAS)・Tomoyuki Tanaka・Tomohiro Tamura・Nobuyuki Yoshikawa(YNU) SCE2019-58 エレソ技報アーカイブへのリンク:SCE2019-58 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
Adiabatic quantum-flux-parametron (AQFP) logic is one kind of superconducting logic family spotlighted as a technological foundation for developing extremely low-energy computers. Although AQFP circuits have the advantage of energy consumption, it was not possible to directly apply CMOS EDA tools for generating AQFP circuits due to fundamental circuit structure differences. We have been developing a top-down tool for AQFP circuits to solve this problem. A recent study demonstrated that the developed top-down tool can generate combinational logic circuits automatically.
As a next step, we plan to include data feedback loops into the top-down methodology. We show a systematic approach to synchronize the clocks of gates while considering the structural differences of CMOS and AQFP. Each AQFP gate is driven by a quad-phase clock, and signal transmission occurs between gates at every clock phase. The clock phase for each gate is determined by its depth relative to the entire circuit. It is found that the re-timing of a 4-bit counter is possible by finding a maximum delay path and equalizing all paths to the critical delay. A control signal `enable' behaves like the external system clock in CMOS and its activation interval depends on the critical delay. |
キーワード |
(和) |
論理合成 / 順序回路 / Topdown / QFPL / / / / |
(英) |
Logic synthesis / sequential circuit / Topdown / QFPL / / / / |
文献情報 |
信学技報, vol. 119, no. 369, SCE2019-58, pp. 117-119, 2020年1月. |
資料番号 |
SCE2019-58 |
発行日 |
2020-01-09 (SCE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
SCE2019-58 エレソ技報アーカイブへのリンク:SCE2019-58 |