ABSTRACT
This paper describes a new datapath generator that generates high-density mask layouts equivalent to hand-crafted ones.
An entry of the generator is a hierarchical symbolic layout at the gate level. Bit-and-row-slicing technique is a key feature to realize large-size and high-density datapath generation. A 21K transistor datapath was generated using 1-μm CMOS technology, whose density is 5.64 KTr/mm2, greater than the 5.38 KTr/mm2 of a hand-crafted datapath.
- Bales82.Bales,M.W.,"Layout Rule Spacing of Symbolic Integrated Circuit Artwork", U.C.Barldey, UCB/ERL Report M82/72, 1982.Google Scholar
- Boyer87.Boyer, D.G. et al., "Symbolic Layout Compaction Benchmarks-Results", Proe. ICCD'87, 1987, pp.185-217.Google Scholar
- Burns87.Burns,J.L. and Newton,A.R., "Efficient Constraint Generation for Hierarchical Compaction", Proc. ICCD'87, 1987, pp.197-200.Google Scholar
- Ishikawa87.Ishikawa, M. and Yoshimura,T., "A New Module Generator with Structural Routers and a Graphical Interface", Proc. ICCAD-87, 1987, pp.436-439.Google Scholar
- Kingsley84.Kingsley,C., "A Hierarchical, Error-Tolerant Compactor", Proc. 21st. DAC, 1984, pp.126-132. Google ScholarDigital Library
- Matsumoto88.Matsumoto,N. et al., "Symbolic Design Methodology for High-Density Macro-cell", Proc. CICC'88, 1988, pp,7.3.1-4.Google Scholar
- Mead80.Mead, C. and Conway, L., "Introduction to VLSI Systems", Addition-Wesley Publishing Company Inc., 1980. Google ScholarDigital Library
- Ohhashi88.Ohhashi, M, et al., "A 32b 3-D Graphic Processor Chip with 10M Pixels/s Gouraud Shading", ISSCC Digest of Technical Papers, 1988, PP.168-169.Google Scholar
- Reichelt86.Reichelt,M. et al,, "An Improved Cell Model for Hierarchical Constraint-Graph Compaction", Proc. ICCAD-86, 1986, pp.482-485.Google Scholar
- Rijnders88.Rijnders,L. et al., "Design of a Process-Tolerant Cell Library for Regular Structures Using Symbolic Layout and Hierarchical Compaction", IEEE J. Solid-State Circuits, vol. 23, 1988, pp.714-721.Google ScholarCross Ref
- Rowson87.Rowson, J. et al., "A Datapath Compiler for Standard Ceils and Gate Arrays", Proc. CICC'87,1987, pp.149-152.Google Scholar
- Takeya89.Takeya,K. et al., "A Generator for High-Density Macrocells with Hierarchical Structure", Proc. Custom Integrated Circuits Conference,1989, pp.23.5.1-4.Google Scholar
- Tan87.Tan, D, and Weste,N., "Virtual Grid Symbolic Layout 1987", Proc. ICCD'87, 1987, pp.192-196.Google Scholar
- Tokuda88.Tokuda,T. et al., "A macrocell Approach for VLSI Processor Design", IEEE Trans. Computer-Aided Design, vol.7, 1988, pp.1272-1277.Google ScholarDigital Library
- Tokumaru88.Tokumaru,T. et al., "Design of a 32bit Microprocessor, TXI", 1988 Symposium on VLSI Circuits Technical Digest, Ill-5,1988.Google Scholar
- Ullman84.Ullman, J.D.,"Computational Aspects of VLSI", Computer Science Press,1984. Google ScholarDigital Library
- Usami89.Usami, K. and Iwamura, L,"Optimized Design Method for FuR-Custom Microprocessors", Proc. CICC'89, 1989, pp.19,5.1-5.Google Scholar
- Usami90.Usarni, K. et al.,"Hierarchical Symbolic Design Methodology for Large-Scale Datapaths", Proe. CICC'90, 1990, pp.30.3.1-4.Google Scholar
Index Terms
- Datapath generator based on gate-level symbolic layout
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