Apparatus and method for polling addresses of one or more slave devices in a communications system

摘要

An address polling method and system for communicating unique slave address values to a master device over a shared bus. The method includes receiving a request signal from the master device requesting that a slave address from each slave device coupled to the data line be sent to the master; causing, in a serial manner, the data line to be placed in logic states corresponding to bit values in a first slave address; and upon the data line being placed in a logic state that is different from a corresponding bit value of the first slave address, determining that another slave device is placing its slave address on the data line and temporarily entering an idle state until such other slave device has finished communicating its slave address to the master device.

主权项

1. A method of communicating with a master, comprising:
receiving a request signal from a master requesting a slave address from each slave device coupled to a data line be sent to the master; controlling the data line for the data line to be sequentially placed in logic states corresponding to bit values in a first slave address; and upon the data line being placed in a logic state that is different from a corresponding bit value of the first slave address, temporarily entering an idle state until another slave device has completed sending a slave address thereof to the master.