US 2006/0190898 A1Published application

Net list producing device producing a net list with an interconnection parasitic element by hierarchical processing

AssigneeRenesas Technology Corp.

InventorsToshiki Kanamoto, Mitsutoshi Shirota, Michiko Uchimura

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Abstract

A memory cell information producing unit obtains physical terminal coordinates, physical terminal names and logical terminal names of a memory cell and layout data, and operates based on them to specify parasitic elements parasitic on interconnections of the memory cell, and to produce memory cell information including the physical terminal names and representing physical properties and a connection relationship of inner elements of the memory cell and the parasitic elements. Memory cell array information producing unit obtains connection information determining the connection relationship of physical terminals of the memory cell, assigns node names to the physical terminals of the memory cell based on the connection information, and produces memory cell array information representing the node names of all the memory cells. A memory cell array net list producing unit produces a net list of the memory cell array formed of the memory cell information and the memory cell array information.

Claims5

Dependent claims

A net list producing device for producing a net list with interconnection parasitic element of a second circuit formed of repetition of a first circuit comprising:

a first circuit information producing unit obtaining a physical terminal coordinate, a physical terminal name and a logical terminal name of said first circuit and layout data, and operating, based on said obtained physical terminal coordinate, said obtained physical and logical terminal names and said obtained layout data, to specify a parasitic element parasitic on an interconnection of said first circuit, and to produce first circuit information including said physical terminal name and representing physical properties and a connection relationship of an inner element of said first circuit and said parasitic element;
a second circuit information producing unit obtaining connection information determining a connection relationship of physical terminals of all of said first circuits included in said second circuit, assigning node names to the physical terminals of all of said first circuits included in said second circuit based on said connection information, and producing second circuit information representing node names of all of said first circuits included in said second circuit;
and
a second circuit net list producing unit producing a net list of said second circuit formed of said first circuit information and said second circuit information.

1 more element

Dependencies are inferred from the claim text.