Patent ID: 8667204

Claim:
A method to differentiate identical devices having a same device address on a two-wire interface, comprising the following steps: (1) providing a two-wire communication system comprising a SDA lane and a SCL lane, an I 2 C master and two identical I 2 C slave devices having the same device address; (2) connecting physically the SDA and SCL lanes to each slave device, wherein a SDA port of a first slave device is connected to the SDA lane and a SCL port of the first slave device is connected to the SCL lane and a SDA port of a second slave device is connected to the SCL lane and a SCL port of the second slave device is connected to the SDA lane; (3) performing signal connectivity check by detecting signal connectivity on the SDA lane and the SCL lane with the first and second slave devices by interpreting information transfer in normal and exchanged signal connectivity modes; and (4) connecting a first I 2 C slave module in the first slave device and a second I 2 C slave module in the second slave device to the SDA lane and the SCL lane in a first configuration responsive to detecting the information transfer in the normal signal connectivity mode and in a second configuration responsive to detecting the information transfer in the exchange signal connectivity mode.