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. 27, 2013
Filed:
Feb. 25, 2011
Jie NI, Portland, OR (US);
Jie Ni, Portland, OR (US);
Fresco Logic, Inc., Beaverton, OR (US);
Abstract
A host controller for a bus is disclosed. The host controller includes a plurality of functional modules interconnected to manage transfer of data between a host bus and a root hub configured to communicate with one or more USB device endpoints on the bus. The plurality of functional modules comprises a DMA engine to transfer one or more data payloads between the host bus and the root hub, a transfer manager configured to determine what control data and/or data payloads should be transferred, and a scheduler to schedule actions performed by the transfer manager. A plurality of control memories, each associated with one or more of the functional modules, store state and/or data information fields accessible by its one or more associated functional modules. The plurality of control memories are distinct and independently accessible from one another.