Synopsys, Inc.

Friedrich Gunter Kurt Sendig

Donald John Oriordan

Hsiang-Wen Jimmy Lin

Philippe Aubert McComber

Barry Andrew Giffel

Jonathan Lee Sanders

Salem Lee Ganzhorn

Mathieu Eric Drut

Jon Francis Bendicksen

Bulent Basaran

A customizable routing system allows designers to create custom connection layouts that can be stored, turned into templates, reused, and further customized. The system describes designer-input custom connection layouts in terms of 'structural directives' that specify its patterns and properties instead of using precise dimensions. Structural directives may describe particular connection patterns between structural components (e.g., backbone or fishbone), the placement, width, direction or layer of specific structural components, and properties of structural components relative to other components. These structural directives are implemented generally during routing, such as through design constraints, which allows the router to locally optimize the design (e.g., for cost or wire length) while considering the structural intentions of the designer. The system can also learn and replicate customization patterns based on existing layout templates by comparing connectivity information to that of existing layout templates and applying applicable structural directives.

Creating and reusing customizable structured interconnects

A method for reuse of extracted layout-dependent effects for circuit design using circuit stencils includes receiving a schematic of an integrated circuit including a circuit segment. A circuit stencil corresponding to the circuit segment is instantiated in a schematic of a second integrated circuit. The circuit stencil includes layout-dependent effects information for the circuit segment extracted from a layout of the first integrated circuit. Simulation is performed on the schematic of the second integrated circuit using the layout-dependent effects information for the circuit segment. A layout of at least a portion of the second integrated circuit corresponding to the circuit segment is generated responsive to performing the simulation.

Reuse of extracted layout-dependent effects for circuit design using circuit stencils

Embodiments relate to designing of integrated circuits using generation and instantiation of circuit stencils. The circuit stencil represents an abstracted version of the circuit segment. The circuit stencils include collapsed versions of the connectivity information of components and nodes of the integrated circuit. The collapsed version of the connectivity information is generated by analyzing functionality of the circuit segment and removing or replacing at least one redundant component or node of the circuit segment without modifying the functionality. The circuit stencil is used for instantiating or referencing components into a second integrated circuit.

Integrated circuit design using generation and instantiation of circuit stencils

Embodiments relate to using placement grids corresponding to repeating track patterns of metal layers in a region to place circuit elements. Each placement grid is defined by as a vertical pitch of a repeating track pattern of one metal layer and a horizontal pitch of another repeating track pattern of another metal layer. Each circuit element is assigned with a placement grid so that it can be placed in alignment with the assigned placement grid. By using the placement grids derived from the track patterns, routable placement of circuit elements can be performed automatically or manually with reduced efforts.

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San Jose, CA, United States of America

Friedrich Gunter Kurt Sendig