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:
Dec. 09, 2014
Filed:
Jul. 04, 2012
Michael Decesaris, Carrboro, NC (US);
Luke D. Remis, Raleigh, NC (US);
Gregory D. Sellman, Morrisville, NC (US);
Steven L. Vanderlinden, Chapel Hill, NC (US);
Michael DeCesaris, Carrboro, NC (US);
Luke D. Remis, Raleigh, NC (US);
Gregory D. Sellman, Morrisville, NC (US);
Steven L. Vanderlinden, Chapel Hill, NC (US);
Lenovo Enterprise Solutions (Singapore) Pte. Ltd., New Tech Park, SG;
Abstract
In accordance with one embodiment of the invention, an I2C bus multiplexing circuit for use in an I2C bus interface can be provided. The I2C bus multiplexing circuit can facilitate multiplexer switching in an I2C bus interface by detecting a start command from an I2C master device via an I2C bus, buffering data from the I2C master device, detecting a clock frequency of a bus serial clock (SCL) line of the I2C master device, holding the serial data (SDA) line of the I2C master device in a clock stretch state and selecting a port based on the detected clock frequency of the SCL of the I2C master device. The method further can include sending the buffered data to an I2C slave device on the selected port. The method further can include receiving an acknowledgement from the I2C slave device on the selected port.