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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yoshikawa, N. Yoda, K. Hoshina, H. Kawasaki, K. Fujiwara, K. Matsuzaki, F. Nakajima, N. |
| Copyright Year | 2002 |
| Abstract | We have proposed a cell-based design methodology for SFQ logic circuits based on a binary decision diagram (BDD) and implemented a BDD SFQ standard cell library using a Hypres Nb process. In this design methodology, any logic function can be implemented by connecting binary switches. Since the circuits are dual rail logic and do not need a global clock, difficulty in the timing design is reduced considerably. In our cell-based design approach, the cell library is composed of only five kinds of basic cells, whose circuit parameters are optimized so as to remove the inter-cell interaction. At the layout level, the cells have the identical size so that circuits can be implemented by simply embedding the basic cells. In this study we have performed an on-chip high-speed test of the BDD SFQ logic circuits. The test system consists of two four-bit data-driven self-timed (DDST) shift registers with a ladder type clock generator. We have confirmed 12 GHz operations of the BDD SFQ logic circuit. We have also examined circuit size dependence of the DC bias margin of large BDD SFQ circuits. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 523 |
| Ending Page | 526 |
| Page Count | 4 |
| File Size | 986614 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 13 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Circuit testing Design methodology Binary decision diagrams Logic circuits Logic testing Large-scale systems Libraries Clocks Data structures Boolean functions |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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