Data coding and decoding method and device of physical coding sub-layer

Abstract

The invention discloses a data coding and decoding method of a physical coding sub-layer. The data coding and decoding method of the physical coding sub-layer comprises the steps of distributing firstdata into a data block and a control block after a data coding side of the physical coding sub-layer receives the first data and coding the data block according to a protocol; for the control block,dividing bits corresponding to a block type field into a first field and a second field, wherein the first field is coded based on a block type identifier, and the second field is coded based on the configuration information of the transmitting terminal of the first data; judging whether second data are a data block or a control block after the data decoding side of the physical coding sub-layer receives the second data, and decoding according to the protocol if the second data are the data block; and if the second data are a control block, decoding based on the configuration information of the transmitting terminal of the second data. The invention also discloses a data coding and decoding device of the physical coding sub-layer.

Description

technical field [0001] The invention relates to a high-performance chip design technology, in particular to a data encoding and decoding method and device of a physical coding sublayer. Background technique [0002] Ethernet (Ethernet) is a baseband LAN technology developed by Xeros. It is divided into 7 layers according to its functions, of which the physical layer is the lowest layer, which defines the coding and line status required for data transmission and reception. In the physical layer The physical coding sublayer (PCS, Physical Coding Sublayer) mainly realizes the coding function and the decoding function. [0003] In the existing technical solution, the PCS layer has the following characteristics: [0004] 1. When encoding PCS 64B / 66B, the block type (block type) field is 8 bits, and there are 15 cases of encoding. [0005] 2. The PCS layer data transmission is ensured by the forward error correction (FEC, Forward Error Correction) function to ensure the reliabil...

AI Technical Summary

Problems solved by technology

[0010] In order to solve the existing technical problems, the embodiment of the present invention provides a data encoding and decoding method and device of the physical coding sublayer, which solves the situation in the prior art that the 8-bit encoding of the block type field is not fully utilized and the FEC function is not used The next data does not have any problems such as verification protection defects

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