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Data crossing method and device

A technology of cross device and data, applied in the field of data flow cross, which can solve problems such as unacceptable and sharp increase

Active Publication Date: 2010-01-06
SANECHIPS TECH CO LTD
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Problems solved by technology

[0008] To sum up, regardless of the use of the Crossbar structure or the BIT interleaved crossover method, in order to maintain the full crossover feature, the number of chips on a single board increases sharply in a quadratic relationship when the system is expanded, which is obviously unacceptable for the current ultra-large-capacity crossover requirements.

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Embodiment Construction

[0047] The time-division cross-connect chip is generally composed of two key components, the TUPP chip and the TUDX chip. The two have different requirements for ASIC resource types. The TUDX chip mainly occupies RAM resources, while the TUPP chip consumes more logic and trigger resources. , based on the evaluation of the scale and resources of the two, the basic idea of ​​the present invention is: integrate 20G TUPP and 40G TUDX in one chip, adopt the asymmetric architecture of 20G TUPP and 40G TUDX, use 2BITS segmentation module and 2BITS reorganizes the module, and adopts two sets of twelve pairs of 2.5Gbps rate redundant SERDES, and constructs an ASIC single chip through reasonable layout and wiring. The constructed ASIC single chip can directly realize the crossover capacity of 20G; two identical ASIC single chips are cascaded through reasonable data flow to realize the crossover capacity of 40G; The chip achieves 80G crossover capacity through reasonable cascading of dat...

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Abstract

The invention discloses a data crossing device comprising at least one ASCI single chip, and the ASCI single chip comprises eight pairs of 2.5G back panel SERDES, 20G branch TUPP and 40G time division crossover matrix (TUDX). The invention also discloses a data crossing method. After a serial data flow enters the crossing device, the crossing device converts the serial data flow into a parallel data flow, and then the parallel data flow is subjected to pointer positioning; the data flow which is subjected to pointer positioning is subjected to all crossing after data partitioning is carried out according to CUP configuration or is subjected to all crossing directly; data subjected to all-crossing are subjected to pin opening and inserting after data recombination, or are subjected to pin opening and inserting directly; and obtained data after pin opening and inserting are in serial output instead of parallel output. The invention can simultaneously realize crossing of high capacities and low capacities and save applied chips.

Description

technical field [0001] The present invention relates to data flow crossover technology, in particular to a data crossover method and device. Background technique [0002] With the development of Internet technology, people's demand for communication bandwidth is increasing. Therefore, in the digital optical fiber communication system, the demand for cross-connect is also increasing. The cross-connect matrix is ​​the core of optical cross-connect equipment. [0003] In Synchronous Digital Hierarchy (SDH, Synchronous Digital Hierarchy) equipment, service allocation is completed through the cross-connect unit, and the cross-connect unit is at the core of the SDH equipment. The cross-connect matrix design of SDH equipment is divided into two types: space-division cross-connect matrix (AUDX) and time-division cross-connect matrix (TUDX). Among them, TUDX refers to the cross-connect matrix with the tributary unit (TU) as the cross-connect unit. [0004] In the existing technology...

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Application Information

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IPC IPC(8): H04Q11/00H04Q3/52
CPCH04L49/101H04L49/1507
Inventor 杨宜张志伟黄炜
Owner SANECHIPS TECH CO LTD
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