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. 17, 2013
Filed:
Aug. 31, 2010
David B. Glasco, Austin, TX (US);
Dane T. Mrazek, Redwood City, CA (US);
Samuel H. Duncan, Arlington, MA (US);
Patrick R. Marchand, Apex, NC (US);
Ravi Kiran Manyam, Santa Clara, CA (US);
Yin Fung Tang, Sunnyvale, CA (US);
John H. Edmondson, Arlington, MA (US);
David B. Glasco, Austin, TX (US);
Dane T. Mrazek, Redwood City, CA (US);
Samuel H. Duncan, Arlington, MA (US);
Patrick R. Marchand, Apex, NC (US);
Ravi Kiran Manyam, Santa Clara, CA (US);
Yin Fung Tang, Sunnyvale, CA (US);
John H. Edmondson, Arlington, MA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
The invention sets forth a crossbar unit that includes multiple virtual channels, each virtual channel being a logical flow of data within the crossbar unit. Arbitration logic coupled to source client subsystems is configured to select a virtual channel for transmitting a data request or a data packet to a destination client subsystem based on the type of the source client subsystem and/or the type of data request. Higher priority traffic is transmitted over virtual channels that are configured to transmit data without causing deadlocks and/or stalls. Lower priority traffic is transmitted over virtual channels that can be stalled.