A Hundred/Gigabit Adaptive Optical Ethernet Physical Layer Realization Circuit

Abstract

The invention discloses a hundred / gigabit adaptive optical Ethernet physical layer realization circuit, which includes an optical module, and also includes an automatic network speed identification module and a receiving process physical layer module. The automatic network speed identification module is used to determine the current optical communication Rate information; the physical layer module of the receiving process includes a data stream multi-sampling module and a data stream recovery module. The data stream multi-sampling module is used to generate eight sampling clocks with the same frequency and a phase difference of 45 degrees between the sampling edges for sampling to obtain samples The data set, the data flow recovery module is used to generate a recovery point data set according to the sampled data set. The present invention samples the serial received data obtained by the receiving end of the receiving optical module through eight sampling clocks with a phase difference of 45 degrees, and adaptively recognizes the sampling edge in the middle of the bit duration period of the serial received data, and then obtains the serial Accurate bit value of the line received data improves the sampling accuracy and data transmission quality.

Description

technical field [0001] The invention relates to the field of digital maintenance and testing of secondary equipment in intelligent substations, in particular to a circuit for realizing a physical layer of 100 / 1000M adaptive optical Ethernet. Background technique [0002] The National Organization for Standardization (ISO) has developed the OSI model, which defines the standard for computer interconnection and is the basic framework for designing and describing computer network communications. The OSI model divides the work of network communication into 7 layers, namely physical layer, data link layer, network layer, transport layer, session layer, presentation layer and application layer. Among them, the physical layer is the most important and basic layer in the OSI layered architecture system. It provides mechanical, electronic, functional and procedural performance for the establishment, storage and release of physical links between data link entities. The physical layer...

AI Technical Summary

Problems solved by technology

At present, relevant domestic test devices basically use dedicated PHY chips to realize the physical layer functions of the optical Ethernet communication process, and provide 100M optical Ethernet ports and Gigabit optical Ethernet ports separately. This design greatly restricts the size of the test device. , power consumption and other technical parameters, so it is of great practical significance to find a new type of circuit that realizes the optical Ethernet physical layer function of 100 / 1000M adaptive

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