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:
Sep. 30, 2003
Filed:
Oct. 31, 2000
Steven D. Krueger, Dallas, TX (US);
David A. Comisky, St. Charles, IL (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A digital system is provided with a microprocessor ( ), a cache ( ) and various memory and devices ( ). Signals to control certain cache memory modes are provided by a physical address attribute memory (PAAM) ( ). For devices present in the address space of the digital system that have different capabilities and characteristics, misuse is prevented by signaling an error or otherwise limiting the use of each device in response to attribute bits in the PAAM associated with the memory mapped address of the device. A memory management unit ( ) with address translation capabilities and/or memory protection features may also be present, but is not required for operation of the PAAM.