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. 02, 2014
Filed:
Mar. 19, 2012
Faissal Mohamad Sleiman, Ann Arbor, MI (US);
Ronald George Dreslinski, Jr., Sterling Heights, MI (US);
Thomas Friedrich Wenisch, Ann Arbor, MI (US);
Faissal Mohamad Sleiman, Ann Arbor, MI (US);
Ronald George Dreslinski, Jr., Sterling Heights, MI (US);
Thomas Friedrich Wenisch, Ann Arbor, MI (US);
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
A data processing apparatus has a cache with a data array and a tag array. The tag array stores address tag portions associated with the data values in the data array. The cache performs a tag lookup, comparing a tag portion of a received address with a set of tag entries in the tag array. The data array includes a partial tag store storing a partial tag value in association with each data entry. In parallel with the tag lookup, a partial tag value of the received address is compared with partial tag values stored in association with a set of data entries in said data array. A data value is read out if a match condition occurs. Exclusivity circuitry ensures that at most one partial tag value of said partial tag values stored in association with said set of data entries can generate said match condition.