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. 21, 2001
Filed:
Mar. 24, 1999
Applicant:
Inventor:
Colin MacDonald, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/200 ;
U.S. Cl.
CPC ...
G06F 1/200 ;
Abstract
A memory controller (,) compares the current address and the previous address sent by a microprocessor (,). If the addresses are DRAM addresses and the current row address matches the previous row address, i.e. same DRAM page access, then the memory controller disables caching (,) of the same DRAM page access. The same DRAM page access disables caching because the same DRAM page access is not substantially longer than a cache access. A counter (,) and comparator (,) allows the memory controller to hold off some number of same DRAM page accesses before disabling caching to give time for the memory controller to set up to the new page.