Data communication method based on BLVDS (Bus Low Voltage Differential Signaling) bus

Abstract

The invention provides a data communication method based on a BLVDS, and relates to the technical field of data communication. The bus can be managed by one master control device; at the same time, aplurality of slave devices are mounted; then, a specific data transmission plan is supplemented; and thus, an inexpensive and efficient communication system is formed. Through extending bus control signals and making a data exchanging rule, the master control device of the bus can effectively exchange the data with any one of specific slave devices; on basis of keeping a low design complexity, thedata is ensured to be transmitted orderly and efficiently.

Description

technical field [0001] The invention relates to data communication technology, in particular to a data communication method based on BLVDS bus. Background technique [0002] The BLVDS bus is an extension of the LVDS communication standard. It solves the defect that the LVDS signal line can only be connected point-to-point, and at the same time inherits its characteristics of fast speed and strong anti-interference ability. Realizing data transmission between multiple devices is a communication solution with simple structure, low price and excellent performance, which is very suitable for data exchange between devices. [0003] However, the BLVDS bus technology only stipulates the physical standard of the signal. If it is used to complete the communication, a complete structural solution is required, that is, through the expansion of the physical structure and the setting of communication rules, it is ensured that each device connected to the bus can be in order. Send, recei...

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Problems solved by technology

[0003] However, the BLVDS bus technology only stipulates the physical standard of the signal. If it is used to complete the communication, a complete structural solution is required, that is, through the expansion of the physical structure and the setting of communication rules, it is ensured that each device connected to the bus can be in order. Send, receive and identify bus data

[0004] Although the existing communication solutions in the industry can complete the above tasks, they are often complex in design and not strong in pertinence

In view of the situation that there is a master device and multiple slave devices in the bus system, and the slave devices only need to communicate with the master device, the existing solutions are relatively redundant in structure, and the cost is relatively expensive, and some solutions also exist Inefficiency issues that cannot meet business needs

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