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:
Mar. 23, 1999
Filed:
Nov. 27, 1996
Applicant:
Inventors:
Derek J Lentz, Los Gatos, CA (US);
Cheng-Long Tang, San Jose, CA (US);
Assignee:
Seiko Epson Corporation, Tokyo-to, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395307 ; 395306 ; 395308 ;
Abstract
The present invention provides a memory system interface design, which provides access to a dual width memory bus. Specifically, a subsystem and method provides for interfacing with a 32 bit or a 64 bit bus. The 32 bit bus would be used for low end products, and the 64 bit bus would be used for high end products. A memory control unit (MCU) supports both the 32 bit and 64 bit modes. Selecting a 32 bit or 64 bit memory subsystem gives a user more room to adjust system cost and performance.