Patent ID: 7774528
Filing Date: 2010-08-10
Classification: G06F

Abstract:
1. In a communications system using an I2C serial data transfer bus that has a serial data line and a clock line used to implement a communications protocol, a method for a master device to identify slave devices coupled to the bus, the method comprising: transmitting, from the master device, a device identification address on the I2C serial data transfer bus; receiving, by the master device, an ACKNOWLEDGE from one or more slave devices, the one or more slave devices having slave addresses that do not correspond to the device identification address; transmitting, from the master device, a slave device address on the I2C serial data transfer bus identifying a particular slave device; re-transmitting, from the master device, the device identification address on the I2C serial data transfer bus; receiving, by the master device, an identification code from the particular slave device; and identifying one or more parameters of the particular slave device using the identification code.