Patent · US Active

Method and system to fix early mode slacks in a circuit design

US9058456B2 · kind B2 · utility

8Cited by

24References

14Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Wilhelm Haller · Winnenden, DE
Ulrich Krauch · Waldenbuch, DE
Kurt Lind · Lörrach, DE
Alexander Woerner · Eppelheim, DE

Key dates

Filing date	Sep 24, 2013
Grant date	Jun 16, 2015
Priority date	—
Expiry date	Sep 24, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F30/394
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An improved method for fixing an early mode slack in a hierarchically designed hardware device with at least one source macro, an integration unit and at least one sink macro comprises: Loading hardware design timing data to determine pins where an early mode slack fix can be applied to fix an early mode slack; for each such pin determining a location across the design hierarchy for the early mode slack fix by calculating a weight value for each of a selection of fix locations of the early mode slack based on absolute values of arrival times of data signals, ratio and difference between arrival times of late mode data signals and early mode data signals; and assigning the early mode slack fix to the determined location based on said weight value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.