A serial transmission method and system based on 8b/10b codec

Abstract

Embodiments of the present invention provide a serial transmission method and system based on 8B / 10B encoding and decoding, which relate to the technical field of communications. The methods include: the serial data sending end converts the 16-bit parallel data in a specific format into 20-bit parallel data after two times of 8B / 10B encoding; Transmit to the serial data receiving end; the serial data receiving end receives the high-speed serial data stream, and converts the high-speed serial data stream into 20bit parallel data; the serial data receiving end performs 8B / 10B decoding on the 20bit parallel data twice Get 16bit parallel data in a specific format. The embodiment of the present invention can realize the serial transmission of 2711 format data, which makes up for the defect that the existing FPGA built-in hard core cannot meet the serial transmission of 2711 format data, and needs to develop a dedicated chip for 2711 format data, and reduces the cost of serial transmission. communication costs, and there is no need to set multiple general-purpose pins on the FPGA for connecting dedicated chips, which simplifies the structure of the FPGA.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a serial transmission method and system based on 8B / 10B encoding and decoding. Background technique [0002] At present, 8B / 10B encoding and decoding are widely used in serial data transmission. However, the existing FPGA built-in hard core is basically only suitable for commonly used protocols, such as: Ethernet protocol, which is not flexible enough to meet the data format of specific fields. Requirements, such as: 2711 format data. At present, the method of realizing serial transmission of 2711 format data on FPGA is generally as follows: FPGA provides a large number of pins, connects a dedicated chip for 2711 format data through a large number of pins, and then uses the dedicated chip to realize 2711 format The serial transmission of data, this method not only needs to develop a special chip for the characters of the 2711 format data, the cost is high, but ...

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Problems solved by technology

[0003] The purpose of the embodiment of the present invention is to provide a serial transmission method and system based on 8B / 10B encoding and decoding, aiming at solving the problem that the existing serial transmission of 2711 format data on FPGA needs to be aimed at the characters of 2711 format data The cost of developing a dedicated chip is high, and it is necessary to set a large number of pins on the FPGA, which makes the structure of the FPGA more complicated.

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