TY - GEN
T1 - Design automation methodology and tools for superconductive electronics
AU - Pedram, Massoud
AU - Wang, Yanzhi
N1 - Publisher Copyright:
© 2018 ACM.
PY - 2018/11/5
Y1 - 2018/11/5
N2 - Josephson junction-based superconducting logic families have been proposed to implement analog and digital signals, which can achieve low energy dissipation and ultra-fast switching speed. There are two representative technologies: DC-biased RSFQ (rapid single flux quantum) technology and its variants that achieve a verified speed of 370 Ghz, and AC-biased AQFP (adiabatic quantum-flux-parametron) that achieves an energy dissipation near quantum limits. Despite extraordinary characteristics of the superconducting logic families, many technical challenges remain, including the choice of circuit fabrics and architectures that utilize the SFQ technology and the development of effective design automation methodologies and tools. This paper presents our work on developing design flows and tools for DC- and AC-biased SFQ circuits, leveraging unique characteristics and design requirements of the SFQ logic families. More precisely, physical design algorithms, including placement, clock tree routing, and signal routing algorithms targeting RSFQ circuits are presented first. Next, a majority/minority gate-based automatic synthesis framework targeting AQFP logic circuits is described. Finally, experimental results to demonstrate the efficacy of the proposed framework and tools are presented.
AB - Josephson junction-based superconducting logic families have been proposed to implement analog and digital signals, which can achieve low energy dissipation and ultra-fast switching speed. There are two representative technologies: DC-biased RSFQ (rapid single flux quantum) technology and its variants that achieve a verified speed of 370 Ghz, and AC-biased AQFP (adiabatic quantum-flux-parametron) that achieves an energy dissipation near quantum limits. Despite extraordinary characteristics of the superconducting logic families, many technical challenges remain, including the choice of circuit fabrics and architectures that utilize the SFQ technology and the development of effective design automation methodologies and tools. This paper presents our work on developing design flows and tools for DC- and AC-biased SFQ circuits, leveraging unique characteristics and design requirements of the SFQ logic families. More precisely, physical design algorithms, including placement, clock tree routing, and signal routing algorithms targeting RSFQ circuits are presented first. Next, a majority/minority gate-based automatic synthesis framework targeting AQFP logic circuits is described. Finally, experimental results to demonstrate the efficacy of the proposed framework and tools are presented.
KW - design automation
KW - single flux quantum logic
KW - superconductive electronics
UR - http://www.scopus.com/inward/record.url?scp=85058177780&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85058177780&partnerID=8YFLogxK
U2 - 10.1145/3240765.3243470
DO - 10.1145/3240765.3243470
M3 - Conference contribution
AN - SCOPUS:85058177780
T3 - IEEE/ACM International Conference on Computer-Aided Design, Digest of Technical Papers, ICCAD
BT - 2018 IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2018 - Digest of Technical Papers
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 37th IEEE/ACM International Conference on Computer-Aided Design, ICCAD 2018
Y2 - 5 November 2018 through 8 November 2018
ER -