Invention Grant
US08028265B2 System and method for improved placement in custom VLSI circuit design with schematic-driven placement
有权
系统和方法,用于改进在具有原理图驱动放置的定制VLSI电路设计中的放置
- Patent Title: System and method for improved placement in custom VLSI circuit design with schematic-driven placement
- Patent Title (中): 系统和方法,用于改进在具有原理图驱动放置的定制VLSI电路设计中的放置
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Application No.: US12183898Application Date: 2008-07-31
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Publication No.: US08028265B2Publication Date: 2011-09-27
- Inventor: William D. Ramsour , Samuel I. Ward , Jun Zhou
- Applicant: William D. Ramsour , Samuel I. Ward , Jun Zhou
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: The Caldwell Firm, LLC
- Agent Patrick E. Caldwell, Esq.
- Main IPC: G06F17/50
- IPC: G06F17/50 ; G06F15/04

Abstract:
A method for generating an electronic circuit layout with placed circuit elements receives a user provided schematic, the user provided schematic comprising a plurality of circuit elements, each circuit element comprising general parameters. The method associates a plurality of first placement parameters with each of the plurality of circuit elements, wherein the first placement parameters comprise a cell horizontal position, a cell vertical stacking position, and a cell vertical adjacent spacing. The method retrieves, from a design library, design parameters associated with at least one of the plurality of circuit elements. The method assigns first absolute placement coordinates for each of the plurality of circuit elements based on the first placement parameters and the design parameters. The method defines and performs an adjustment operation on the placement parameters of a selected subset of circuit elements, generating adjusted placement parameters. The method assigns second absolute placement coordinates based on the first placement parameters, the design parameters, and the adjusted placement parameters and generates an electronic circuit layout with placed circuit elements based on the second absolute placement coordinates.
Public/Granted literature
- US20100031215A1 System and Method for Improved Placement in Custom VLSI Circuit Design with Schematic-Driven Placement Public/Granted day:2010-02-04
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