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. 18, 2015
Filed:
Oct. 01, 2013
Xilinx, Inc., San Jose, CA (US);
Weirong Jiang, San Jose, CA (US);
XILINX, INC., San Jose, CA (US);
Abstract
A memory is disclosed that includes one or more TCAM memory units, each configured to store a respective set of rules. Each unit has an input coupled to receive an input search key from an input of the memory and includes a plurality of stages 1 through H. Each stage is configured to receive a respective multi-bit segment of the input search key and provide a result segment in response thereto. The result segment includes, for each rule of the respective set of rules, a bit that indicates whether or not the rule matches the segment of the input search key. Each unit also includes a first output circuit configured to generate a combined result indicating which rules match all of the respective segments received by each of the plurality of stages. The memory can also include one or more update circuits to update rules in a plurality of units.