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.

Date of Patent:
Dec. 10, 2019

Filed:

May. 21, 2018
Applicant:

Xilinx, Inc., San Jose, CA (US);

Inventors:

Dinesh D. Gaitonde, Fremont, CA (US);

Henri Fraisse, Sunnyvale, CA (US);

Sachin K. Bhutada, Hyderabad, IN;

Aashish Tripathi, Hyderabad, IN;

Ramakrishna K. Tanikella, Hyderabad, IN;

Assignee:

XILINX, INC., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/50 (2006.01);
U.S. Cl.
CPC ...
G06F 17/5072 (2013.01); G06F 17/505 (2013.01); G06F 17/5054 (2013.01); G06F 17/5077 (2013.01);
Abstract

A netlist of a circuit design includes an interface portion and a main portion. The interface portion is decomposed into multiple levels. Each level specifies connections between a respective first set of circuit elements and a respective second set of circuit elements. The second set of circuit elements in each level, except a last level, includes the first set of circuit elements in a next level. The first set of circuit elements identified in a first level of the multiple levels have fixed locations. The second set of circuit elements in the multiple levels is placed-and-routed. The placing-and-routing of the second set of circuit elements in one level is completed before commencing placing-and-routing of the second set of circuit elements in the next level. The main portion is placed-and-routed after placing-and-routing the second set of circuit elements in the multiple levels.


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