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:
Jul. 15, 1997
Filed:
Nov. 01, 1995
Applicant:
Inventors:
Frank Worrell, San Jose, CA (US);
Darren Jones, Mountain View, CA (US);
Assignee:
LSI Logic Corporation, Milpitas, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
326 86 ; 326 16 ; 326 56 ;
Abstract
Bus control circuitry for enabling/disabling the drivers of a bus in an integrated circuit is presented. The bus control circuitry has master control signal logic blocks and output enable blocks. The bus control circuitry enables one and only one bus driver set at a time to avoid bus contention. Furthermore, the bus driver circuits are enabled and disabled with precise timing to avoid even momentary bus contention. Finally, the bus, driver circuits and control circuitry may be tested with serial scanning.