Streamlined serial bus communication method and system

Abstract

The invention discloses an RSB (Reduced Serial Bus) communication method and an RSB communication system, wherein the method comprises the following steps that: initialization setting is carried out, and a dynamic operation address is assigned for a slave device; a master device sends a read / write command and a transmission address accessed by the read / write command, and carries out data access to the slave device; the slave device receives the read / write command and the transmission address, carries out address matching, and judges whether the current received transmission address matches the dynamic operation address of the slave device; and after the judging result shows that the received transmission address is matched with the dynamic operation address of the slave device, the transmission address is identified, and the read / write command is executed. The RSB communication method and the RSB communication system provided by the invention have the advantages that the addressing access of the master device toa plurality of slave devices can be completed on the basis of using two data lines; the problem that a plurality of chip selecting signals are required for the access to a plurality of slave devices in the traditional serial communication system is solved; and the system transmission cost and the power consumption are reduced.

Description

technical field [0001] The invention relates to the field of digital communication, in particular to a simplified serial bus communication method and system. Background technique [0002] System-on-a-chip (SOC) refers to the technology of integrating a complete system on a single chip and grouping all or part of the necessary electronic circuits. With the rapid development of digital communication technology, the speed of digital communication is getting faster and faster, and the functional integration of SOC is getting higher and higher. The application of a SOC system involves the access and control of various peripheral auxiliary devices. [0003] In modern simple serial digital communication systems, numerous protocols are used for master-slave communication in a bus structure. Among them, the serial peripheral interface bus (Serial Peripheral interface, SPI) and the integrated circuit bus (Inter-Integrated Circuit, IIC) are widely used in the design of various digital...

AI Technical Summary

Problems solved by technology

In the SPI bus, in order to realize the access to multiple slave devices, more chip select signals are required, which is a test for the IO resources of the SOC; and the IIC device has inherent limitations due to the circuit structure of the Open-Drain mode. The transmission speed is only 400kbps, and because the necessary pull-up resistors introduce excessive power consumption, it also brings a certain cost to cost-sensitive electronic products

Therefore, traditional serial communication methods and systems have been unable to achieve a better balance between IO resources, high-speed transmission, and power consumption.

Images