Synopsys, Inc.

Robert K Couch

Andrew J Read

Mark S Papamarcos

Robert K Mardjuki

William F Kappauf

Peter R Jaeger

Wayne P Heideman

Lawrence C Widdoes, Jr

Melvin Rudin

Norman Francis Kelly

Louis K Scheffer

An improved system or and method of connecting a hardware modeling element to the pin electronics circuitry of a hardware modeling system, with the improved system having circuitry and structures that will allow it to be connected to a hardware modeling system that is powered, circuitry to indicate to the pin electronics circuitry that the improved system is connected to it, circuitry to identify the hardware modeling element supported by the improved system to the hardware modeling system, circuitry to indicate to the hardware modeling system when the hardware modeling element is initialized so evaluation of it by the hardware modeling system can commence, circuitry to generate selectable supply voltages for the powering the hardware modeling element, and a hardware modeling element connector that will allow the connection of a family of hardware modeling elements to the same connector without the need to change the connector.

System for and method of connecting a hardware modeling element to a

An improved hardware modeling system that is preferably embodied as a stand-alone system for networked connection to one or a variety of host computers that are used to design digital electronics systems, the hardware modeling system having a network interface for communicating between the hardware modeling system and the host computer, a central processing unit for controlling operation of the hardware modeling system, a central timing unit for generating timing signals for use in the operation of the hardware modeling system including the generation of precision clocks, data formatting strobes and sample strobes, an internal pattern bus for transmission of read/write requests from the central processing unit in one operational mode and pattern sequences for stimulation of the hardware modeling element in a second operational mode, a pattern controller for controlling presentation and delivery of the pattern sequences to the pattern bus, a pattern memory connected to the pattern controller for storing stimulus pattern sequences, pin electronics circuitry which is used for driving the pattern sequences on the pattern bus to the hardware modeling element and then sensing the five state values of the hardware modeling element pins, and an adapter that is used for fixturing the hardware modeling element to the pin electronics circuitry with the adapter supporting live insertion into a powered hardware modeling system.

Hardware modeling system and method of use

An improved system for and method of connecting a hardware modeling element to the pin electronics circuitry of a hardware modeling system, with the improved system having circuitry and structures that will allow it to be connected to a hardware modeling system that is powered, circuitry to indicate to the pin electronics circuitry that the improved system is connected to it, circuitry to identify the hardware modeling element supported by the improved system to the hardware modeling system, circuitry to indicate to the hardware modeling system when the hardware modeling element is initialized so evaluation of it by the hardware modeling system can commence, circuitry to generate selectable supply voltages for the powering the hardware modeling element, and a hardware modeling element connector that will allow the connection of a family of hardware modeling elements to the same connector without the need to change the connector.

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Santa Cruz, CA, United States of America

Robert K Couch