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Serial data transmission system and method

A serial data and transmission system technology, applied in the field of data transmission, can solve problems such as high cost, inability to realize multi-node communication, complex hardware, etc., and achieve the effect of low cost, good confidentiality, and simple hardware structure

Inactive Publication Date: 2014-04-23
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing Gbps-level serial transmission systems use FPGA + high-speed optical fiber. This method can realize data transmission between distant nodes and has high reliability, but requires a special serial data transceiver. For short-distance data transmission In other words, the hardware is complicated, the cost is high, and the most important thing is that it cannot realize the communication between multiple nodes.

Method used

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  • Serial data transmission system and method
  • Serial data transmission system and method

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Experimental program
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Effect test

Embodiment 1

[0044] The master sends data to the slave 2, specifically including the following steps:

[0045] (A1) Reset transmit bus.

[0046] (A2) Set the sending address signal TAddr to 0x2.

[0047] (A3) Pull up the sending enable signal TEn, delay two clock cycles and start sending data packets frame by frame, and detect the sending error signal TErr during the sending process, if it is high, resend the previous frame of data.

[0048] (A4) The slave machine detects that the transmit enable signal TEn is high, and performs address matching. After the slave machine 2 matches successfully, it enables the receiving end of the slave serial transceiver.

[0049] (A5) Slave 2 receives data frame by frame and judges whether it is a data alignment character, and if so, executes step (A6), and if not, pulls up the transmission error signal TErr.

[0050] (A6) Slave 2 receives data frame by frame and judges whether it is a terminator, if yes, the sending process ends, if not, execute step (A...

Embodiment 2

[0053] The host machine collects the data of the slave machine 3, which specifically includes the following steps:

[0054] (B1) Reset the receive bus.

[0055] (B2) Set the receiving address signal RAddr to 0x3.

[0056] (B3) Pull up the receive enable signal REn to enable the receive end of the main serial transceiver, and wait for comma alignment.

[0057] (B4) The slave machine detects that the receiving enable signal REn is high, and performs address matching. After the slave machine 3 matches successfully, it starts to send data packets frame by frame, and detects the receiving error signal RErr during the sending process. If it is high, it resends the upper A frame of data.

[0058] (B5) The host receives the data frame by frame and judges whether it is a data alignment symbol, and if so, executes step (B6), and if not, pulls up the receiving error signal RErr.

[0059] (B6) The host receives the data frame by frame and judges whether it is a terminator, if so, the r...

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Abstract

The invention discloses a serial data transmission system and method. The system comprises a main machine and a plurality of subsidiary machines. The main machine comprises a main serial transceiver, a main CRC calibrator, a bus controller and a main memory which are connected in series successively. Each subsidiary machine comprises a subsidiary serial transceiver, a subsidiary CRC calibrator, a data processor and a subsidiary memory which are connected in series successively. The main serial transceiver is connected with the subsidiary serial transceivers through data buses in a serial bus. The bus controller is connected with the data processors through address buses, enable signal lines and error signal lines in the serial bus. The method comprises a data sending process and a data receiving process. According to the system and the method, data transmission among any nodes is supported, slaves nodes are extensible, the independent control signal set and transceiver are provided for data transmission and receiving, full-duplex data transmission can be achieved, the data transmission rate is high, the hardware structure is simple, the confidentiality is good, the cost is low, and the anti-interference capacity is high.

Description

technical field [0001] The invention belongs to the technical field of data transmission, and more specifically relates to a serial data transmission system and method. Background technique [0002] With the development of high-speed and high-precision motion control, more and more factors need to be considered and information to be processed in designing a high-performance motion control system. work. In the multi-processor precision motion control architecture, each board is responsible for completing the corresponding information processing, and achieves the purpose of data interaction and synthesis through the interconnection between boards. At this time, the data transmission system between the boards is crucial to the entire motion control system. [0003] There are two types of data transmission methods: parallel and serial. Parallel transmission can transmit multiple bits of data at one time on multiple parallel channels, so that the single data transmission volum...

Claims

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Application Information

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IPC IPC(8): G06F13/38
Inventor 李源周云飞霍立刚蔡得领
Owner HUAZHONG UNIV OF SCI & TECH