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Multi-machine synchronous communication system and method

A technology of synchronous communication and communication method, which is applied in multi-machine synchronous communication system and its communication field, can solve the problems of limited communication rate, difficult to ignore differences, line delay and other problems, and achieve high transmission rate, large data throughput, The effect of high line utilization

Active Publication Date: 2015-11-04
ITECH ELECTRONICS NANJING
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Problems solved by technology

[0005] Under the conventional SPI communication module for long-distance transmission between isolated devices, line delay and edge distortion will be caused by isolation chips, characteristic impedance mismatch, etc., and these problems are discrete, such as the communication rate is too high, each line These differences caused by hardware transmission are difficult to ignore, and there is a risk of reading misalignment, so the communication rate is limited

Method used

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  • Multi-machine synchronous communication system and method
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  • Multi-machine synchronous communication system and method

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Embodiment Construction

[0021] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like figure 1 As shown, a multi-machine synchronous communication system is composed of a master device and n slave devices, where n is an integer greater than or equal to 1. This embodiment cancels the single-function SS chip select signal line in the existing bus structure, and adopts two data transmission lines MOSI lines (data flow from the host device to the slave device, MOSI1, MOSI2), and multiple data receiving lines. MISO lines (The data flow is from the slave device to the host device, one-to-one correspondence with the slave devices, one for each slave device), 1 SCLK clock signal line to realize a new multi-machine synchronous communication bus.

[0023] like figure 2 , the data transmitted by MOSI1 contains the frame header (the frame header is a continuous number of 1 or 0 signals, other data s...

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Abstract

The invention relates to a multi-machine synchronous communication system and a multi-machine synchronous communication method, and belongs to the technical field of communications. A plurality of SS chip selection lines with single function in an existing synchronous communication system bus is cancelled. A new synchronous communication system bus is achieved by using at least one data transmitting line and a plurality of data receiving lines. A chip selection signal and a control signal are transmitted via the same data transmitting line. The bus manner is high in line use ratio, high in transmission rate and large in data throughout. Because a real-time signal and a non-real-time signal are separately transmitted, the system and the method of the invention are very suitable for being applied to a collection control system.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a multi-machine synchronous communication system and a communication method thereof. Background technique [0002] The existing synchronous communication systems are mostly based on the SPI communication bus system, which mainly includes MOSI (master output / slave input), MISO (master input / slave output), SCLK clock line and SS chip select line. The working mode is that the host sends the clock signal through SCLK, the SS chip select line sends the chip select signal, the MOSI sends information such as control commands, parameter addresses and data to the slave, and the slave responds to the master command through MISO. [0003] Under this protocol, each slave occupies a separate SS chip selection line, which is only used for strobe. This method causes waste of channels, and the increase of lines not only increases the burden on the IO port of the device, but also increases ...

Claims

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Application Information

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IPC IPC(8): H04L12/40
Inventor 马海波其他发明人请求不公开姓名
Owner ITECH ELECTRONICS NANJING
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