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. 20, 2010
Filed:
May. 01, 2006
Amrita Deshpande, Chandler, AZ (US);
Alma Anderson, Chandler, AZ (US);
Jean-marc Irazabal, Santa Clara, CA (US);
Stephen Blozis, Morgan Hill, CA (US);
Paul Boogaards, Cary, NC (US);
Amrita Deshpande, Chandler, AZ (US);
Alma Anderson, Chandler, AZ (US);
Jean-Marc Irazabal, Santa Clara, CA (US);
Stephen Blozis, Morgan Hill, CA (US);
Paul Boogaards, Cary, NC (US);
NXP B.V., Eindhoven, NL;
Abstract
Consistent with one example embodiment, communications systems, using a serial data transfer bus having a serial data line and a clock line used to implement a communications protocol, incorporate latched service requests. Methods for one or more slave devices to request service from a master device involve detecting a condition that asserts a request for service signal, at a common node independent from the serial data transfer bus, to a master device of the bus. The request for service is latched it, within the slave, such that the request for service remains asserted regardless of a change in the detected condition. The request for service is de-asserted in response to interrogation of the slave, using the serial data transfer bus, by the master device. Devices may be configured as general purpose Input/Output devices, CODEC arrangements, or other slave devices, and may conform to IC and/or SMBus serial communication specifications.