SYSTEM AND METHOD FOR FILTRATION OF ERROR REPORTS RESPECTIVE OF STATIC AND QUASI-STATIC SIGNALS WITHIN AN INTEGRATED CIRCUIT DESIGN

摘要

A system and method identify potentially static and/or quasi-static signals within an integrated circuit (IC), or portion thereof. Static and quasi-static signals may be identified in a design description of the IC by any one or more of: (1) a fan-out size exceeding some threshold, (2) a toggle frequency in a simulation trace that is below some threshold, and (3) a signal name that appears in a list accessed from the memory. Identification of static and quasi-static signals is performed, typically, as part of a verification process in order to flag cases where the verification system would otherwise indicate an error (e.g., at a clock domain crossing). Identifying a signal of the IC as being static or quasi-static improves the quality of results of verification and makes it easier for a prospective user to concentrate on actual rather than spurious issues reported during verification.

主权项

1. A method implemented in a computing system for identification of static signals or quasi-static signals of a circuit, the method comprising:
receiving a description of the design of at least a portion of the circuit; identifying from the received description any one or more signals having a specified characteristic of a static signal or a quasi-static signal; and storing a listing in a memory of any such identified signal.