Serial communication system

Abstract

The embodiment of the invention discloses a serial communication system, and the system comprises a master device and a plurality of slave devices; the slave devices comprise first slave devices and second slave devices, and the first slave devices and the second slave devices are installed according to random positions, wherein the master device is in communication connection with each first slave device through a daisy chain type serial bus, and the daisy chain type serial bus performs high-speed data transmission in a serial differential transmission mode; wherein the master device and thesecond slave devices are in communication connection through a universal serial bus, and the universal serial bus performs low-speed data transmission in a polling mode. According to the technical scheme of the embodiment of the invention, the bus can be configured according to the configuration requirement of the application scene of the serial system on the bus on the premise of not additionallyincreasing the hardware cost, so that the flexibility of bus configuration in the serial communication system is improved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of communication, and in particular to a serial communication system. Background technique [0002] The bus (Bus) is the public communication trunk line for transmitting information between various functional components of the computer, and it is widely used in the communication system. Generally, the bus structure is divided into two types: parallel and serial. Among them, the parallel bus transfer rate is higher, and the serial bus transfer rate is lower. Considering the requirements, implementation difficulty and cost comprehensively, the bus usually adopts a serial bus. The common serial bus is divided according to the communication rate. If the rate is below 50M, it can be called a low-speed bus; if the rate is above 50M, it can be called a high-speed bus. [0003] In general communication systems, controllers usually support only one type of bus. However, in actual use, so...

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Problems solved by technology

[0004] However, using couplers to be compatible with high-speed buses and low-speed buses not only introduces additional hardware for couplers, but also increases hardware costs

Moreover, for the application scenario where high-speed and low-speed buses are mixed, the bus configuration mode can only be the mode of high-speed bus in front and low-speed bus in the back, so it cannot meet the diversified configuration requirements of the bus in the application scenario

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