Copy
Yoshio KAMEDA, Shinichi YOROZU, Shuichi TAHARA, "Logic Design of a Single-Flux-Quantum (SFQ) 22 Unit Switch for Banyan Networks" in IEICE TRANSACTIONS on Electronics,
vol. E85-C, no. 3, pp. 625-630, March 2002, doi: .
Abstract: We describe the logic design of a single-flux-quantum (SFQ) 22 unit switch. It is the main component of the SFQ Banyan packet switch we are developing that enables a switching capacity of over 1 Tbit/s. In this paper, we focus on the design of the controller in the unit switch. The controller does not have a simple "off-the-shelf" conventional circuit, like those used in shift registers or adders. To design such a complicated random logic circuit, we need to adopt a systematic top-down design approach. Using a graphical technique, we first obtained logic functions. Next, to use the deep pipeline architecture, we broke down the functions into one-level logic operations that can be executed within one clock cycle. Finally, we mapped the functions on to the physical circuits using pre-designed SFQ standard cells. The 22 unit switch consists of 59 logic gates and needs about 600 Josephson junctions without gate interconnections. We tested the gate-level circuit by logic simulation and found that it operates correctly at a throughput of 40 GHz.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e85-c_3_625/_p
Copy
@ARTICLE{e85-c_3_625,
author={Yoshio KAMEDA, Shinichi YOROZU, Shuichi TAHARA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Logic Design of a Single-Flux-Quantum (SFQ) 22 Unit Switch for Banyan Networks},
year={2002},
volume={E85-C},
number={3},
pages={625-630},
abstract={We describe the logic design of a single-flux-quantum (SFQ) 22 unit switch. It is the main component of the SFQ Banyan packet switch we are developing that enables a switching capacity of over 1 Tbit/s. In this paper, we focus on the design of the controller in the unit switch. The controller does not have a simple "off-the-shelf" conventional circuit, like those used in shift registers or adders. To design such a complicated random logic circuit, we need to adopt a systematic top-down design approach. Using a graphical technique, we first obtained logic functions. Next, to use the deep pipeline architecture, we broke down the functions into one-level logic operations that can be executed within one clock cycle. Finally, we mapped the functions on to the physical circuits using pre-designed SFQ standard cells. The 22 unit switch consists of 59 logic gates and needs about 600 Josephson junctions without gate interconnections. We tested the gate-level circuit by logic simulation and found that it operates correctly at a throughput of 40 GHz.},
keywords={},
doi={},
ISSN={},
month={March},}
Copy
TY - JOUR
TI - Logic Design of a Single-Flux-Quantum (SFQ) 22 Unit Switch for Banyan Networks
T2 - IEICE TRANSACTIONS on Electronics
SP - 625
EP - 630
AU - Yoshio KAMEDA
AU - Shinichi YOROZU
AU - Shuichi TAHARA
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E85-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 2002
AB - We describe the logic design of a single-flux-quantum (SFQ) 22 unit switch. It is the main component of the SFQ Banyan packet switch we are developing that enables a switching capacity of over 1 Tbit/s. In this paper, we focus on the design of the controller in the unit switch. The controller does not have a simple "off-the-shelf" conventional circuit, like those used in shift registers or adders. To design such a complicated random logic circuit, we need to adopt a systematic top-down design approach. Using a graphical technique, we first obtained logic functions. Next, to use the deep pipeline architecture, we broke down the functions into one-level logic operations that can be executed within one clock cycle. Finally, we mapped the functions on to the physical circuits using pre-designed SFQ standard cells. The 22 unit switch consists of 59 logic gates and needs about 600 Josephson junctions without gate interconnections. We tested the gate-level circuit by logic simulation and found that it operates correctly at a throughput of 40 GHz.
ER -