Method and device adopting bus for communication

The invention provides a method adopting a bus for communication. The method comprises the following steps: saving a global control register address field in each register, wherein the global control register address field comprises two parts, the first part is a segment address, the second part is a global address, and the segment address corresponds to the address of another register; acquiring the address information of visiting object equipment from bus information; visiting the current register according to the address information when the address information belongs to the global address; and visiting another register according to the address information when the address information belongs to the global address. The invention further provides a device adopting the bus for communication, so as to overcome the space limitation when the bus is used for visiting the inner address of the equipment, and improve the developing efficiency.