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:
May. 05, 2015
Filed:
Sep. 04, 2012
Ramprasad Raghavan, Maharashtra, IN;
Ramprasad Raghavan, Maharashtra, IN;
Avago Technologies General IP (Singapore) Pte Ltd, Singapore, SG;
Abstract
Methods and structure are provided for representing ports of a Serial Attached SCSI (SAS) expander circuit within routing memory. The SAS expander includes a plurality of PHYs and a routing memory. The routing memory includes entries that each indicate a set of PHYs available for initiating a connection with a SAS address, and also includes an entry that represents a SAS port with a start tag indicating a first PHY of the port and a length tag indicating a number of PHYs in the port. The SAS expander also includes a Content Addressable Memory (CAM) including entries that each associate a SAS address with an entry in the routing memory. Further, the SAS expander includes a controller that receives a request for a SAS address, uses the CAM to determine a corresponding routing memory entry for the requested SAS address, and selects the port indicated by the corresponding routing memory entry.