Patent ID: 7788431
Filing Date: 2010-08-31
Classification: G06F

Abstract:
1. In a data communications system using a serial data transfer bus that has a serial data line and a clock line used to implement a communications protocol, a method for a slave device to decode its device address, the method comprising: detecting a first state of address pins of the slave device in response to a start condition on the serial data transfer bus, the address pins being used for communication via the communication protocol, a first one of the address pins coupled to the serial data line and a second one of the address pins coupled to the clock line; detecting a second state of the address pins of the slave device subsequent to the detection of the first state, wherein one or more logic values of the address pins differ between the first state and the second state; and decoding a slave device address as a functional relationship between the logic values of the address pins in the first state and the logic values of the address pins in the second state.