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:
Jul. 26, 2011
Filed:
Jan. 03, 2008
William C. Moyer, Dripping Springs, TX (US);
Michael J. Rochford, Round Rock, TX (US);
Quyen Pho, Austin, TX (US);
William C. Moyer, Dripping Springs, TX (US);
Michael J. Rochford, Round Rock, TX (US);
Quyen Pho, Austin, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
Snoop requests are managed in a data processing system having a cache coupled to a processor that provides access addresses to the cache. Snoop queue circuitry provides snoop addresses to the cache via an arbiter. The snoop queue circuitry has a snoop request queue for storing a plurality of entries. Each entry of the snoop request queue that corresponds to a snoop request includes a snoop address and a corresponding status indicator. The corresponding status indicator indicates whether the snoop request has zero or more collapsed snoop requests having a common snoop address which have been merged to form the snoop request. The status indicator is used for debug and by fullness management logic to manage the capacity of the snoop request queue. A general collapsed status signal is generated to indicate whenever any snoop queue entry collapsing occurs.