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Extension device of data network node device port

A node device and network node technology, which is applied in the field of spaceWire data network node device port extension devices, can solve the problem that more than four devices cannot be directly interconnected.

Inactive Publication Date: 2007-08-01
NAT SPACE SCI CENT CAS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the existing technology can only realize direct interconnection with three network node devices at most, and cannot meet the problem of direct interconnection with more than four devices without using a switch, thereby providing a The expansion device of the data network node equipment port that can realize direct interconnection with four or more network node equipment

Method used

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  • Extension device of data network node device port
  • Extension device of data network node device port
  • Extension device of data network node device port

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Embodiment Construction

[0017] The device for expanding the port of a data network node device according to the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] As shown in Figure 1, in one embodiment, the expansion device of the data network node equipment port of the present invention includes: a low-voltage differential signal cross-point switch chip 1, a low-voltage differential signal cross-point switch chip 1', a circuit switching control logic circuit 2 , interface A, interface B, and interface C.

[0019] The low-voltage differential signal (LVDS) cross-point switch chip 1 and the low-voltage differential signal cross-point switch chip 1' are a pair of 4×4 low-voltage differential signal cross-point switch chips, and the low-voltage differential signal cross-point switch chip 1 and the low-voltage differential signal The signal crosspoint switch chip 1' is respectively connected to the circuit switching control ...

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Abstract

The invention discloses an expansion device for the device ports of data network node that includes several interfaces which are used to connect with the network node device, and also includes a pair of switch chip of low voltage difference signal crossing point and a logic circuit for switch control; the interface is connected with the switch chip of low voltage difference signal, one interface connects with one network node device, a pair of switch chip of low voltage difference signal crossing point are connected with the logic circuit for switch control separately, the data is transmitted from one network node device to other network node device; the switch control logic circuit selects the device which is used to transmitted the data according to the requirement of application dynamically to realize the time-division transmission between the device of network node. The invention provides an effectively means for realizing one device with 200Mbps spacewire data network to connect with four device, and also provide an effective method for reducing the system cost.

Description

technical field [0001] The invention relates to data network node equipment, in particular to an expansion device for a spaceWire data network node equipment port. Background technique [0002] SpaceWire is proposed by ESA based on two commercial standards IEEE 1355-1995 and IEEE 1596.3 (LVDS), through changes in reliability and power consumption of IEEE 1355 to better meet the requirements of aerospace applications A standard for serial data transmission. The purpose of this bus standard is to connect sensors, processing units, large-capacity memory units and downlink telemetry subsystems to a unified high-speed data processing structure in the future. One of its main goals is to support reuse at the component and subsystem levels, and reuse is very meaningful for reducing development costs, improving reliability, and improving work efficiency. The biggest advantage of this technology is that it is initially designed according to the requirements of space applications. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/22
Inventor 李慧军陈小敏孙辉先
Owner NAT SPACE SCI CENT CAS
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