Granted Patent B2

US 8,694,940 · App. 13/546,791 · Granted Apr 8, 2014

Abstract

Claims (27)

1. A system for circuit design and implementation using mixed cell libraries, comprising:

a cell placement EDA tool configured to transform a logical circuit representation into a physical circuit representation by placing cells from mixed cell libraries into clusters corresponding to said mixed cell libraries; and

an interconnect routing EDA tool associated with said cell placement EDA tool and configured to route interconnects in buffer zones separating said clusters.

2. The system as recited in claim 1 wherein said logical circuit representation contains data defining a location of at least one of said clusters.

3. The system as recited in claim 1 wherein said logical circuit representation is contained in a netlist.

4. The system as recited in claim 1 wherein at least two of said mixed cell libraries differ from one another in terms of form factor.

5. The system as recited in claim 1 wherein said cell placement EDA tool is further configured to place said cells according to a specified cluster granularity.

6. The system as recited in claim 1 wherein said cell placement EDA tool is configured to place said cells in accordance with a plurality of technology files associated with said mixed cell libraries.

7. The system as recited in claim 1 wherein said buffer zones contain boundary terminations.

8. A method of circuit design and implementation using mixed cell libraries, comprising:

transforming a logical circuit representation into a physical circuit representation by placing cells from mixed cell libraries into clusters corresponding to said mixed cell libraries; and

routing interconnects in buffer zones separating said clusters;

wherein said transforming and said routing are performed by a computer.

9. The method as recited in claim 8 wherein said logical circuit representation contains data defining a location of at least one of said clusters.

10. The method as recited in claim 8 wherein said logical circuit representation is contained in a netlist.

11. The method as recited in claim 8 wherein at least two of said mixed cell libraries differ from one another in terms of form factor.

12. The method as recited in claim 8 wherein said placing comprises placing said cells according to a specified cluster granularity.

13. The method as recited in claim 8 wherein said placing comprises placing said cells in accordance with a plurality of technology files associated with said mixed cell libraries.

14. The method as recited in claim 8 wherein said buffer zones contain boundary terminations.

15. A non-transitory computer-readable storage medium containing program instructions for designing and implementing a circuit using mixed cell libraries, execution of said program instructions by one or more processors of a computer system causing said one or more processors to:

transform a logical circuit representation into a physical circuit representation by placing cells from mixed cell libraries into clusters corresponding to said mixed cell libraries; and

route interconnects in buffer zones separating said clusters.

16. The medium as recited in claim 15 wherein said logical circuit representation contains data defining a location of at least one of said clusters.

17. The medium as recited in claim 15 wherein said logical circuit representation is contained in a netlist.

18. The medium as recited in claim 15 wherein at least two of said mixed cell libraries differ from one another in terms of form factor.

19. The medium as recited in claim 15 wherein said cell placement EDA tool is further configured to place said cells according to a specified cluster granularity.

20. The medium as recited in claim 15 wherein said cell placement EDA tool is configured to place said cells in accordance with a plurality of technology files associated with said mixed cell libraries.

Assignments (9)