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:
Jun. 07, 2005
Filed:
Jul. 30, 2002
David John Gwilt, Cambridge, GB;
Richard Roy Grisenthwaite, Cambridgeshire, GB;
David John Gwilt, Cambridge, GB;
Richard Roy Grisenthwaite, Cambridgeshire, GB;
ARM Limited, Cambridge, GB;
Abstract
A cache controller operable to control a cache comprising cache lines, each being operable to store data words and validity information indicating that all data words within that cache line are valid. The cache controller comprises a linefill mechanism operable to write data words to a cache line, to provide an indication when each of the data words has been written to the cache and to set the validity information when all data words in the cache line have been written; and a data word accessing mechanism, responsive to a request to access a data word during a linefill operation prior to the validity information being set, to determine from the indication provided by the linefill mechanism whether the data word to be accessed has already been written during the linefill operation and, if so, to provide a signal indicating that the data word is accessible.