Independent migration of hierarchical designs with methods of finding and fixing opens during migration

US7568173B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Veit Gernhoefer · Holzgerlingen, DE
• Matthew T. Guzowski · South Burlington, US
• Jason D. Hibbeler · Williston, US
• Kevin W. McCullen · South Burlington, US
• Rani Narayan · San Jose, US
• Stephen L. Runyon · Pflugerville, US
• Leon Sigal · Monsey, US
• Robert F. Walker · South Burlington, US
• Pieter J. Woeltgens · Yorktown Heights, US
• Xiaoyun K. Wu · Hopewell Junction, US
• Xin Yuan · Kunshan, CN

Key dates

• Filing date: Jun 14, 2007
• Grant date: Jul 28, 2009
• Expiry date: Oct 24, 2027

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F30/30
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Methods of independently migrating a hierarchical design are disclosed. A method for migrating a macro in an integrated circuit comprises: determining an interface strategy between a base cell in the macro and the macro, the base cell including an interface element involved in the interface strategy; migrating the base cell independently with respect to the macro based on the interface strategy; initially scaling the macro; swapping the migrated base cell into the macro; and legalizing content of the initially scaled macro.