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. 14, 1992
Filed:
Oct. 22, 1990
Paul A Reed, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A memory system for translating addresses has an active pull-up transistor per CAM entry for guaranteeing that a valid CAM entry is loaded in a CAM array prior to addressing a RAM entry in A RAM array. The CAM has a load device connected to each entry for dynamically activating each CAM entry during an address translation. The RAM array has a plurality of RAM entries wherein each RAM entry is connected to a predetermined CAM entry by a Match-Line. A predetermined one of a plurality of driver transisors is connected to each active Match-Line for selectively charging each Match-Line to a predetermined active state during an address write operation, thereby reducing power consumed by non-selected CAM entries. Only one Match-line remains active in response to a 'Hit' condition. Feedback between each Match-Line to a validity bit cell in each entry of the CAM is used to set each validity bit only after a successful write of a CAM entry.