The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2005
Filed:
Jun. 12, 2003
Ghun Kim, Sunnyvale, CA (US);
Ghun Kim, Sunnyvale, CA (US);
Sun Microsystems, Inc., Santa Clara, CA (US);
Abstract
One embodiment of the present invention provides a system that facilitates placing flip-flops in an integrated circuit based on timing requirements. The system operates by first receiving a netlist for flip-flop connectivity. Next, the system determines a metal layer class definition for each signal in the netlist based upon timing requirements of a corresponding flip-flop. The system then classifies a flip-flop instance using the metal layer class definition by defining a flip-flop type for each flip-flop instance and associating the flip-flop with a group of other flip-flops that have a same metal layer class definition. Finally, determining a position for the group by replacing an existing repeater in the integrated circuit with the group of flip-flops.