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:
Mar. 03, 2020
Filed:
Jul. 20, 2018
Dell Products, Lp, Round Rock, TX (US);
Jeffrey Kennedy, Austin, TX (US);
Timothy M. Lambert, Austin, TX (US);
Pablo R. Arias, Austin, TX (US);
Dell Products, LP, Round Rock, TX (US);
Abstract
A baseboard management controller (BMC) includes a plurality of device I2C interfaces. Each device I2C interfaces provides a device I2C bus that is ported externally to the BMC. The BMC further includes a plurality of device buffer/switch circuits. Each device buffer/switch circuit is connected to a respective device I2C bus, and is configured to selectably connect to the respective I2C bus in a high-impedance mode, an open-drain mode, and a FET switch mode. The BMC further includes a multiplexor/driver circuit that has a multiplexor I2C interface that provides a multiplexor I2C bus that is ported externally to the BMC. The multiplexor/driver circuit is coupled to each device I2C bus via the respective buffer/switch circuit, and is configured to selectively couple one of the device I2C busses to the multiplexor I2C bus, and to select one of the high-impedance mode, the open-drain mode, or the FET switch mode for the selected buffer/switch circuit.