Patent · US Active

Method to differentiate identical devices on a two-wire interface

US8667204B2 · kind B2 · utility

4Cited by

4References

13Claims

0Family size

Assignee

RPX Corporation · US

Inventors

Armin Fischer · Munich, DE
Joachim Riexinger · Bad Boll, DE
Frank Kronmueller · Neudenau, DE

Key dates

Filing date	Jan 24, 2011
Grant date	Mar 4, 2014
Priority date	—
Expiry date	Jun 1, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F13/4291
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Systems and methods for providing a differentiation of two identical slave devices on a same I2C bus without any hardware (e.g. additional ID pins) or software overhead are disclosed. Each identical slave device is connected to the SDA/SCL lanes by interchanging its SDA/SCL ports. It is up to the slave device to detect its signal connectivity to the SDA/SCL lanes of the I2C bus. The slave devices detect the signal connectivity by interpreting the I2C transfer in normal and interchanged connectivity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.