10G Ethernet gearbox first in first out (Fifo) read-write control and fault tolerance system

Abstract

The invention provides a 10G Ethernet gearbox first in first out (Fifo) read-write control and fault tolerance system, which comprises physical coding sublayer (PCS) receiving equipment and a transceiver connected with the PCS receiving equipment through an interface bus XSBI. The PCS receiving equipment comprises a Demux module, a synchronous header searching module, a descrambling module, a Gearbox Fifo variable speed module and a 64B / 66B decoding module, wherein the Demux module, the synchronous header searching module, the descrambling module, the Gearbox Fifo variable speed module and the 64B / 66B decoding module are sequentially connected; and the Gearbox Fifo variable speed module comprises an ultrashort frame processing module, an ultralong frame processing module, a lost frame header processing module, a lost frame footer processing module, a read-write selection module and a monitoring data module. According to the 10G Ethernet gearbox Fifo read-write control and fault tolerance system, the problem of misreading-miswriting or control error caused by a line signal quality problem is solved.

Description

technical field [0001] The invention belongs to the field of network communication, and specifically relates to a 10GEthernet GearboxFifo read-write control and fault-tolerant system. Background technique [0002] The 10GEthernet PCS (Physical Coding) sublayer sits between the Coordination sublayer (via GMII) and the Physical Medium Access (PMA) sublayer, which maps well-defined Ethernet MAC functions to existing coding and physical layer signaling systems In terms of function, it is connected with the interface XGMII of the upper layer RS / MAC layer, and uses the PMA service interface with the lower layer PMA interface. [0003] Generally speaking, the type of 10GBASE can be selected through the upper layer configuration register: 10GBASE-X, 10GBASE-R, 10GBASE-W. 10GBASE-X uses a very compact package, 4 receivers and 4 lasers that work at intervals of about 25nm near the wavelength of 1300nm, and each pair of transmitters / receivers operates at a speed of 3.125Gbit / s (the da...

AI Technical Summary

Problems solved by technology

[0004] In complex network equipment, many factors will lead to the distortion of the code loss received by the PCS layer, that is, the data jump error caused by the attenuation of the line signal quality. Signal quality problems caused by splitting equipment, network equipment overheating, etc.

If the PCS layer does not adopt any fault-tolerant method for processing, it will lead to abnormal function of the PCS layer, and most of the problems occur in the Gearbox Fifo variable speed module of the PCS layer, because the other modules are pipeline operations, and the Gearbox Fifo variable speed module includes A cross-clock domain fifo is prone to module deadlock, so the operation of Gearbox Fifo is very important

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