System and method for dynamically distributing device address on integrated circuit bus

Abstract

The system for dynamically allocating device address on integrated circuit bus includes one bus controlling and processing unit and several devices connected to the integrated circuit bus with one processing unit each. The bus controlling and processing unit is for generating several different new addresses, sending commands to the integrated circuit bus and allocating new address to device with preset address. Each of the processing units in the devices completes the following successive jobs: setting the address of device the unit is in as preset address, receiving from the integrated circuit bus one new address allocating command and determining the device address as the new address based on the command. The present invention also provides method of dynamically allocating device address. The present invention can expand the capacity of the integrated circuit bus and make the integrated circuit bus capable of connecting more device.

Description

【Technical field】 [0001] The present invention relates to a kind of integrated circuit bus address distribution system and method, particularly relate to a kind of I 2 A system and method for dynamically assigning addresses of C bus devices. 【Background technique】 [0002] Philips I 2 C (Inter Integrated Circuit, I 2 C) The bus has become the industry standard serial bus for control, maintenance and configuration in many electronic applications because of the simplicity of its plug-and-play two-wire interface and its low implementation cost. [0003] connected to I 2 I on the C bus 2 C devices need to pass their respective I 2 C address (I 2 C SlaveAddress) to access. Traditional I 2 C device address setting is done through each I 2 The hardware on the circuit board of the C device is preset. I 2 The C bus defines an I 2 C equipment can only set one I 2 C address, and I 2 The setting range of C address is 00-FF. For example, most I 2 The Electrically Erasable...

AI Technical Summary

Problems solved by technology

For example, most I 2 The Electrically Erasable Programmable Read Only Memory (EEROM) that can be accessed by the C bus has only three rubber pins (Strapping Pins), which limits the I / O of these EEROMs. 2 The C address setting range is A0-AF (only even addresses), so only 8 EEROM devices can be connected to one I 2 C bus

Images