A communication method of high-speed serial bus suitable for multi-point interconnection

Abstract

The invention discloses a high-speed serial bus structure for multi-point interconnection and a communication method thereof, and relates to the information interaction domain of a communication device. A clock transmission channel and a data transmission channel are arranged between the main station single board of the bus structure and every slave station single board; the clock transmission channel and the data transmission channel are realized through a M-LVDS bus, wherein the main station single board provides a bus clock through the clock transmission channel for making every station singe board receive and send data while takes charge of maintaining the bus; when the bus is in idle state, the sending authority of every slave station single board is granted so as to send data from every slave station single board. The slave station single board is used for distinguishing different priority levels through comparing the address of every slave station single board after acquiring the sending authority, so as to contend for the bus using right and send data. All station points on the bus shall competitively use the bus, and has high instantaneity; the main station bus management method can make that every station has equal opportunity to contend for the bus.

Description

technical field [0001] The invention relates to the technical field of information interaction of communication equipment, in particular to a high-speed serial bus structure suitable for multi-point interconnection and a communication method thereof. Background technique [0002] Communication equipment and some large-scale electronic equipment usually use multiple circuit boards (single boards for short) to jointly implement complex functions, and information communication between each board is required, such as the working status of each board and mutual control. It is an inevitable choice to use the bus to realize the interconnection between the boards, which can greatly reduce the number of backplane connections. [0003] There are many existing bus technologies, such as I2C (Inter-Integrated Circuit, internal integrated circuit) bus and CAN (Controller Area Network, controller area network) bus, etc. These technologies have been widely used in industrial electronics, co...

AI Technical Summary

Problems solved by technology

However, in the transmission method implemented by this protocol, each node can only transmit data according to the pre-allocated time interval. When the data of a certain node is long, multiple transmissions are required to realize it; or when the node does not exist, it still takes a time period , the real-time and flexibility of the bus are poor

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