Boots – shoes – and leggings
Patent
1995-06-07
1998-03-03
Trans, Vincent N.
Boots, shoes, and leggings
364488, 364489, 364490, G06F 1750
Patent
active
057242518
ABSTRACT:
A system and a method for designing, fabricating and testing multiple cell test structures validate a cell library. Each test structure includes a plurality of logic layers where outputs of a logic layer are connected only to the inputs of a succeeding logic layer. In contrast to the conventional design method, mismatches in each logic layer are increased to assure extreme conditions in the test structure. For each logic layer, the number of fan-outs of each output from the previous logic layer is specified, and the number of basic cells in each layer is based on the number of inputs of the test structure. Based on D-optimality and maximum fan-in resolution, an assignment for connecting each fan-out and each fan-in is determined. Alternatively, a design repair algorithm can be used to make such an assignment. Each output of each logic cell in the logic layer is then assigned a length using D-optimality. The predicted propagation delays of a designed test structure are compared to the actual propagation delays of a fabricated test structure. The above is repeated for designing, fabricating, and testing multiple cell test structures to validate the cell library.
REFERENCES:
patent: 5387810 (1995-02-01), Seta et al.
patent: 5406497 (1995-04-01), Altheimer et al.
patent: 5572437 (1996-11-01), Rostoker et al.
"Validating An ASIC Standard Cell Library", by W. Agatstein et al. 1990.
"Dual Space Algorithms for Designing Space-Filing Experiments", by William D. Heavlin et al. Jun., 1994.
Kim et al. "High Performance CMOS Macromodule Layout Synthesis," IEEE 1994, pp. 179-182.
Wu et al. "Over-the-Cell Routers for New Cell Model," IEEE, 1992, pp. 604-607.
Lau et al. "M3D11: A Configurable Multilayer Router for Compact Custom Cell Design," IEEE, 1991, pp. 1928-1931.
Advanced Micro Devices , Inc.
Siek Vuthe
Trans Vincent N.
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