Cadence Design Systems, Inc.

Regis R Colwell

Elias Lee Fallon

Wangyang Zhang

Hua Luo

Timothy Rosek

Hui Xu

Namita Bhushan Rane

David Allan White

Roland Ruehl

Henry K Yu

Harindranath Parameswaran

Sanjib Ghosh

Yinnie Lee

Joshua Alexander Baudhuin

Pardeep Juneja

Jeremiah Cessna

Harsh Deshmane

Anjna Khanna

Simon Simonian

Khaled M Elgalaind

Jose A Martinez

Arnold Ginetti

Hongzhou Liu

Randall Scott Lawson

Gilles S C Lamant

Jeffrey Markham

Rob A Rutenbar

Akshat Shah

Richard Allen Woodward, Jr

Chung-Do Yang

Sheng Qian

Gilles Lamant

Alisa Yurovsky

Shang Li

Zhigang Wang

Steven Riley

Ming Yi Fang

Haitham Gad

Hsun-Chieh Yu

Khalid ElGalaind

Thomas Jordan

Rahil Rajesh Kothari

Rong Chang Yan

Mahmoodreza Jahanseirroodsari

Patrick Hyde

Qian Xu

The present disclosure relates to a computer-implemented method for genetic placement of analog and mix-signal circuit components. Embodiments may include receiving an unplaced layout associated with an electronic circuit design and grouping requirements. Embodiments may also include identifying one or more instances that need to be placed in the unplaced layout and areas of the unplaced layout configured to receive the instances. Embodiments may further include analyzing one or more instances that need to be placed in the unplaced layout and the areas of the unplaced layout configured to receive the instances, wherein analyzing is based upon a row-based data structure. Embodiments may also include determining a location and an orientation for each of the one or more instances based upon the genetic algorithm and generating a placed layout based upon the determined location and orientation for each of the instances.

System, method, and computer program product for analog and mix-signal circuit placement

The present disclosure relates to a computer-implemented method for electronic design is provided. Embodiments may include receiving, using at least one processor, an electronic design schematic and an electronic design layout and analyzing, via machine learning, at least one schematic feature from a pair of devices associated with the electronic design schematic. Embodiments may further include determining, based, at least in part, upon the analyzing, whether the pair of devices should be grouped together.

System, method, and computer program product for group and isolation prediction using machine learning and applications in analog placement and sizing

Embodiments include herein are directed towards a method for use in an electronic design environment is provided. Embodiments may include receiving, using a processor, an electronic design and providing, at a graphical user interface, an option to change an object associated with the electronic design. Embodiments may further include identifying a damage area associated with the electronic design, the damage area including an object therein. Embodiments may also include generating a polygon for the damage area and caching one or more voids located outside of the damage area. Embodiments may further include performing a cut and stamp operation on a portion of the electronic design associated with the damage area and populating, at the graphical user interface, a repaired damage area.

System and method for updating shapes associated with an electronic design

The present disclosure relates to a computer-implemented method for electronic design. Embodiments may include receiving, using at least one processor, an electronic design schematic and an electronic design layout and training a model using at least one predictor associated with the electronic design layout. Embodiments may further include obtaining an updated model, based upon, at least in part, the training. Embodiments may also include applying the updated model to a second electronic design schematic or a second electronic design layout, wherein one or more hard constraints or one or more soft constraints or both are created, based upon, at least in part, the model.

System, method, and computer program product for the integration of machine learning predictors in an automatic placement associated with an electronic design

Embodiments may include receiving an unplaced layout associated with an electronic circuit design and one or more grouping requirements. Embodiments may further include identifying instances that need to be placed at the unplaced layout and areas of the unplaced layout configured to receive the instances. Embodiments may also analyzing one or more instances that need to be placed at the unplaced layout and the one or more areas of the unplaced layout configured to receive the one or more instances. Embodiments may further include determining a location and an orientation for each of the one or more instances based upon, at least in part, the analyzing. Embodiments may also include generating a placed layout based upon, at least in part, the determined location and orientation for each of the one or more instances. Embodiments may further include during the generation of the placed layout, routing the placed layout.

System, method, and computer program product for simultaneous routing and placement in an electronic circuit design

The present disclosure relates to a computer-implemented method for electronic design is provided. Embodiments may include receiving, using at least one processor, an electronic design having one or more unoptimized nets. Embodiments may further include applying a genetic algorithm to the electronic design, wherein the genetic algorithm includes a two stage routing analysis, wherein a first stage analysis is an intra-row routing analysis and a second stage is an inter-row routing analysis. Embodiments may also include generating an optimized routing of the one or more nets and displaying the optimized routing at a graphical user interface.

System, method, and computer program product for genetic routing in an electronic circuit design

Disclosed are method(s), system(s), and article(s) of manufacture for implementing layouts for an electronic design using machine learning, where users re-use patterns of layouts that have been previously implemented, and those previous patterns are applied to create recommendations in new situations. An improved approach to perform cross-validations is provided.

Method and system for performing cross-validation for model-based layout recommendations

Disclosed are method(s), system(s), and article(s) of manufacture for implementing layouts for an electronic design using machine learning, where users re-use patterns of layouts that have been previously implemented, and those previous patterns are applied to create recommendations in new situations.

Method and system for automatically extracting layout design patterns for custom layout design reuse through interactive recommendations

A method for placing and routing devices in a circuit layout is provided. The method includes determining devices to be placed in a circuit layout and a relative position of two devices in the circuit layout. In some embodiments, the method includes pre-routing channels in the circuit layout, determining routing trunk information from the pre-routed channels, and placing the two devices in the circuit layout based on the routing trunk information. Further, the method includes forming a first routing trunk along channels in the circuit layout, coupling the first routing trunk to one device of the two devices, and checking that a placement of a plurality of devices and the coupling the first routing trunk to one device of the plurality of devices meet a circuit layout specification. A computer system and a non-transitory computer-readable medium storing commands to execute the above method are also provided.

Method and apparatus for placement and routing of analog components

Systems and methods for creating and placing custom guard rings create a guard ring from a plurality of unit cells reflecting the devices that are enclosed in the guard ring. Using a unit cell identified by a design tool user as the basic unit of the guard ring, with a few additional setup parameters, a complete, content-aware guard ring is created. The guard ring will consist of a collection of the identified unit cells placed around the circuit devices that are to be protected. The created guard ring will function as a single circuit component. Edits to the dimensions and/or parameters of the unit cell will affect the placement of the unit cell in the protected area and will therefore require creation of a new guard ring consistent with the changed parameters.

Implementing designs of guard ring and fill structures from simple unit cells

Disclosed encompasses method, system, computer program product for implementing interactive checking of constraints. Various embodiments bridge schematic design environment and layout environment with a binder mapping process and utilize connectivity information from the schematic design to identify constraint violations early in the physical design stage. The method identifies or creates a layout and identifies or generates an object for a modification process. The method may take snapshot(s) of the design database or may use one or more logs for restoring the design database. The method then identifies or creates scratch pad(s) and performs modification process on the object to generate a change. The method uses scratch pad(s) and trigger(s) to perform constraint checking during the modification process to provide interactive feedback in response to the modification process before committing the change to the persistent database.

Methods, systems, and articles of manufacture for implementing interactive, real-time checking or verification of complex constraints

A method is provided to produce a constraint information for use to implement a routing process used to generate routing signal lines in an integrated circuit design comprising: producing a net topology pattern structure that corresponds to a logical net that is associated with at least two instance item structures of at least one functional design, wherein the net topology pattern structure is associated with the at least two instance item structures and includes multiple constituent structures that indicate at least one constraint upon physical implementation of the logical net structure.

Producing a net topology pattern as a constraint upon routing of signal paths in an integrated circuit design

Disclosed are methods and systems for implementing constraint and connectivity aware physical designs. The method or system provides a connectivity-aware environment to implement electronic designs. For example, the method interactively determines whether an electronic design complies with various constraints by using connectivity information in a nearly real-time manner while the electronic design is being created in some embodiments. The method or system uses the connectivity information provided by a connectivity engine or specified by designers to present feedback to a user as to whether a newly created object or a newly modified object complies or violates certain relevant constraints in an interactive manner or in nearly real-time without having to perform such constraints checking in batch mode. The method further enables one to implement electronic designs by using connectivity information without performing extraction on layouts or rebuilding nets.

Methods, systems, and computer program product for implementing electronic designs with connectivity and constraint awareness

A method for registering constraints for EDA (Electronic Design Automation) of an IC (Integrated circuit) includes: associating a constraint with values for constraint identification that identify the constraint in an IC design; associating the constraint with values for constraint relationships that relate the constraint to at least one EDA application; saving the constraint identification values and the constraint relationship values in a constraint registry element; and providing an interface to a user for accessing values of the constraint registry element.

Registry for electronic design automation of integrated circuits

In a computer implemented method of device layout in an integrated circuit design an array having a plurality of cells is selected and stored in a memory of a computer. A schematic view of a plurality of interconnected circuit devices of a circuit is displayed on the computer's display. One or more of the circuit devices of the displayed schematic view are selected by a user. Responsive to the selection of each circuit device, a processing means of the computer populates an empty cell of the array in the memory of the computer with a corresponding layout instance of the circuit device, wherein each layout instance represents a physical arrangement of material(s) that form the corresponding selected circuit device.

Analog layout module generator and method

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Gibsonia, PA, United States of America

Regis R Colwell