Line alignment method, device and equipment for Ethernet physical coding sublayer PCS

Abstract

The embodiment of the invention discloses a line alignment method, device and equipment for Ethernet physical coding sublayers PCS. The method comprises the following steps: initializing a receiver scrambler according to received data of an A line pair; carrying out odd-even hopping detection on the B line pair, the C line pair and the D line pair in series, and determining odd-even hopping moments of the B line pair, the C line pair and the D line pair; obtaining B line pair conjecture data, C line pair conjecture data and D line pair conjecture data through the initialized receiver scrambler; determining an alignment delay difference of each line pair by taking the data received by the A line pair as a reference; respectively descrambling the received data of each line pair and determining the polarity; and performing compensation alignment on the received data of each line pair based on the alignment delay difference of each line pair, and correcting the polarity of each line pair according to a polarity result. According to the invention, odd-even jump detection is carried out on the line pairs in advance, the hardware processing time sequence is reasonably arranged, the delay detection time of the line pairs can be effectively reduced, and sliding window matching is performed on different line pairs by adopting the same sliding window unit, so that the hardware overhead is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to a method, device and device for aligning wire pairs of an Ethernet physical coding sublayer PCS. Background technique [0002] In the Gigabit Ethernet communication system, four pairs of Category 5 twisted-pair wires are used for full-duplex communication between the transceivers. Due to the different transmission delays of the wire pairs, when the receiving end receives the data on the four wire pairs, it is no longer aligned, and skew occurs between the data. The current data alignment method used by the receiving end is to first use the A line to initialize the scrambler to the data, and then estimate B / C / D according to different n0, that is, the time index of the last reset time of the transmitting end scrambler The guessed value of the line pair is then compared with the received data in parallel using different sliding window units, a...

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Problems solved by technology

[0003] However, the above-mentioned line pair alignment method takes a long time to process, and when different line pairs perform sliding window matching between the guessed value and the actually received line pair data, the parallel operation adopted will also increase the overhead on the hardware

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