The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1992
Filed:
Dec. 10, 1990
Joji Katsura, Nishinomiya, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An internal bus test circuit for testing an integrated circuit internal bus which interconnects a plurality of function modules of the integrated circuit, the test circuit including switches that are operable for isolating respective modules from the bus, a bus setting circuit enabling individual lines to the bus to be set to a desired logic level, and a by-pass bus with corresponding by-pass circuits, for a function module that is connected between the bus and external pads. The test circuit thereby enables the bus functions to be easily tested in real-time operation, independently of the respective conditions of the test modules that are connected to the bus.