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Compaction/decompaction method for realizing wire back panel large volume high speed exchange

A high-speed switching, large-capacity technology, applied in the field of routers and network switches, it can solve the problems of crowded signal arrangement of core single boards, SI and EMC design difficulties, etc., to achieve high selectivity and flexibility, strong anti-interference, signal The effect of slack

Inactive Publication Date: 2004-01-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a large-capacity system, the signal arrangement on the core single board (such as a switching board) is very crowded. Adding ground wires to surround it will bring serious problems to the core single board, the PCB design of the backplane, and the SI and EMC design of the system. great difficulty

Method used

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  • Compaction/decompaction method for realizing wire back panel large volume high speed exchange
  • Compaction/decompaction method for realizing wire back panel large volume high speed exchange
  • Compaction/decompaction method for realizing wire back panel large volume high speed exchange

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, the implementation of the present invention is described in detail as follows:

[0023] exist figure 1 In the existing large-capacity network switches and router systems, the signals of the backplane 3 are mostly input by high-speed, grouped TTL data buses. The conventional method is to transfer the TTL data bus from the sending board 1 through the TTL bus and After the driver (244 / 245) A4 is driven, it is transmitted through the backplane 3, and then driven by the bus driver (244 / 245) B5 on the receiving board 2, and then input to the TTL data bus, thus completing the signal transmission process of network switches and routers .

[0024] exist figure 2 In order to reduce the number of traces on the backplane 3 and improve the reliability of data transmission, the present invention is provided with an LVDS serializer 6 and a LVDS serializer 6 and The LVDS deserializer 7 , the LVDS serializer 6 and the LVDS deserializer...

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Abstract

Method of this invention is as follows: 1. LVDS serilizer / deserianzer designed at the back board of a sending and a receiving single boards are connected with TTL data bus of the sending and receiving single boards separately 2. TTL data bus signal of the sending is compressed to a few difference signals by LVDS serializer according to its reference clock to be transferred via its back board. 3. The said difference signals are decompressed to data signals to be input to TTL bus by LVDS deserializer according to its reference clock. The invention reduces wiring number and layers of the back to reduce its cost.

Description

technical field [0001] The invention belongs to the class of network switches and routers, and particularly relates to large-capacity and high-speed control of backplanes in network switches and routers. Background technique [0002] At present, with the development of communication technology, communication systems such as network switches and routers have become more and more complex. Whether it is the number of backplane wiring in the network switches and routers, or the speed of signal transmission is greatly increased. [0003] For complex systems of large-capacity network switches and routers, most of the backplane signals are high-speed, grouped data buses. After transmission through the backplane, the receiving board is then driven by the bus driver (244 / 245) to input the TTL data bus, (such as figure 1 shown). [0004] In the complex system control method of conventional network switches and routers, TTL signals are used on the backplane, and the anti-interference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28
Inventor 李锦飞钟建兔李天亚
Owner ZTE CORP
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