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. 08, 2006
Filed:
Jul. 17, 2002
David Wooten, Escondido, CA (US);
Stuart Allman, San Diego, CA (US);
David Wooten, Escondido, CA (US);
Stuart Allman, San Diego, CA (US);
Cypress Semiconductor Corp., San Jose, CA (US);
Abstract
A method and apparatus for interrupt signaling. A communication network is described comprising a master device and a slave device that are both coupled to a two wire serial bus for communication. The two wire serial bus comprises a serial data (SDA) line and a serial clock line. The master device controls communication between the master device and the slave device. The slave device is capable of generating an interrupt signal during an idle condition over the SDA line for requesting a communication transaction with the master device. Also, a method is described for recognizing an interrupt at the master device. During an idle condition over the SDA line, the master device reads the SDA line low. Previously, the slave device pulls the SDA line low during the idle condition. The master device recognizes the reading of the SDA line low as an interrupt signal from the slave device requesting the communication transaction.