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.

Date of Patent:
Jun. 07, 2016

Filed:

Sep. 20, 2015
Applicant:

Qualcomm Technologies Inc., San Diego, CA (US);

Inventor:

Jean-Jacques Lecler, Antibes, FR;

Assignee:

Qualcomm Technologies, Inc., San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/08 (2006.01); G06F 13/42 (2006.01); G06F 3/06 (2006.01);
U.S. Cl.
CPC ...
G06F 12/0815 (2013.01); G06F 12/0831 (2013.01); G06F 13/4282 (2013.01); G06F 2212/622 (2013.01);
Abstract

A system and method are disclosed for communicating coherency information between initiator and target agents on semiconductor chips. Sufficient information communication to support full coherency is performed through a socket interface using only three channels. Transaction requests are issued on one channel with responses given on a second. Intervention requests are issued on the same channel as transaction responses. Intervention responses are given on a third channel. Such an approach drastically reduces the complexity of cache coherent socket interfaces compared to conventional approaches. The net effect is faster logic, smaller silicon area, improved architecture performance, and a reduced probability of bugs by the designers of coherent initiators and targets.


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