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. 09, 2014
Filed:
Mar. 16, 2012
Patrice Woodward, Bristol, GB;
Patrice Woodward, Bristol, GB;
Infineon Technologies AG, Neubiberg, DE;
Abstract
One embodiment of the present invention relates to a CPU cache system that stores tag information and cached data in the same SRAM. The system includes an SRAM memory device, a lookup buffer, and a cache controller. The SRAM memory device includes a cache data section and a cache tag section. The cache data section includes data entries and the tag section includes tag entries associated with the data entries. The tag entries include memory addresses that correspond to the data entries. The lookup buffer includes lookup entries associated with at least a portion of the data entries. The number of lookup entries is less than the number of tag entries. The cache controller is configured to perform a speculative read of the cache data section and a cache check of the lookup buffer simultaneously or in a single cycle.