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:
May. 08, 2018
Filed:
Sep. 01, 2016
Applicant:
Freescale Semiconductor, Inc., Austin, TX (US);
Inventors:
Assignee:
NXP USA, INC., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/36 (2006.01); G06F 13/42 (2006.01); G06F 13/362 (2006.01);
U.S. Cl.
CPC ...
G06F 13/362 (2013.01); G06F 13/4282 (2013.01);
Abstract
A system having master and slave devices and communicating over an I2C bus has SDA and a SCL lines that are normally high unless a device pulls the voltage of the line Low. Normal data signals on the SDA line are set during the low phase of the clock signals on the SCL line and transferred to a receiver during the high phase of the clock signals. A slave device provides an alert signal on the SDA line during the low phase of the clock signals to send an alert signal to the master device. The alert signal may be a pulse signaling the slave device wakeup or a pulse pattern identifying the alerting slave device.