US 5,517,658 AGranted

Method for testing design timing parameters using a timing shell generator

AssigneeLSI Logic Corporation

InventorsDavid Gluss, Georgia Lazana, Douglas Boyle

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Abstract

A method for testing the timing parameters of a system design is presented, especially suited for use in testing for timing violations between the pins of a semiconductor device. A description of the timing constraints of the various modules of a design is written in a common non-technical vernacular, and functions as an input file. A Timing Shell Generator converts the input file description into a simulator-environment-compatible output code-language file description. The output code-language file is operative to implement the timing constraints of the original input file during simulation such that any violations of the prescribed timing constraints are indicated to the tester who can then take appropriate action.

Claims4

Dependent claims

A method for providing user-specified timing constraints to a simulator of system operation, between functional modules of a design for a system including a plurality of modules, each module having one or more terminals and its own individual operational parameters, the user-specified timing constraints being converted from a timing vernacular language to timing constraints in a behavioral simulation language that is compatible with the simulator, the method comprising the steps of:

creating an input file containing specifications in the timing vernacular language including a system name, one or more terminal names of the modules, and timing constraints associated with each of the terminal names;
and
converting the specifications in the timing vernacular language to specifications in the behavioral simulation language, using a timing shell generator means, including a lexical analyzer, a parser, and a generator;
the converted specifications in the behavioral simulation language being used to direct the simulator to monitor and report timing violations in accordance with said timing constraints.

1 more element

Dependencies are inferred from the claim text.