SFQ data communication switch

Author

Dubash, N.B. ; Perng-Fei Yuh ; Borzenets, V.V. ; Van Duzer, T. ; Whiteley, S.R.

Author_Institution

Conductus Inc., Sunnyvale, CA, USA

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

2681

Lastpage

2684

Abstract

A new SFQ data communication switch has been designed and tested. Complete operation of a 4/spl times/4 switch circuit has been demonstrated with address decoding at low-speed. Transmission through a given path in the switch has been demonstrated for data rates up to 4 Gb/s. Circuit simulations show operation of the switch cells up to 30 Gb/s. The circuit was fabricated using HYPRES´s standard 1 kA/cm/sup 2/ niobium process. The switch has a crossbar architecture with an RF SQUID based switch cell at each crosspoint. The address is decoded by means of RSFQ shift registers which are integrated into the switch matrix. The design enables high bit-rate, low crosstalk, non-blocking architecture, NRZ or RZ data format, and self routing of variable length data packets.

Keywords

SQUIDs; data communication; data communication equipment; decoding; digital communication; electronic switching systems; niobium; superconducting device testing; superconducting logic circuits; superconducting switches; telecommunication equipment testing; 30 Gbit/s; 4 Gbit/s; 4/spl times/4 switch circuit; HYPRES standard Nb process; NRZ data format; Nb; RF SQUID based switch cell; RSFQ shift registers; RZ data format; SFQ data communication switch; address decoding; crossbar architecture; high bit-rate; low crosstalk; nonblocking architecture; self routing; single flux quantum logic; variable length data packets; Circuit simulation; Circuit testing; Communication switching; Data communication; Decoding; Niobium; Radio frequency; SQUIDs; Switches; Switching circuits;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.621791

Filename

621791