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Switch device including public voltage reference path

A switching device, voltage reference technology, used in electrical components, digital transmission systems, transmission systems, etc., can solve the problems of signal instability, complexity, complex implementation and control, and achieve the effect of saving space

Inactive Publication Date: 2003-06-25
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multilevel switch matrix described in the patent specification cited above is relatively complex to implement and control because there is no direct, unique connection between all inputs and all outputs of the matrix
The implementation, control and programming of such matrices are sufficiently complex to be used, for example, in high-speed packet-switched applications
Moreover, constructing such a matrix in a cascaded structure of several stages is detrimental to circuit performance, especially signal instability

Method used

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  • Switch device including public voltage reference path
  • Switch device including public voltage reference path
  • Switch device including public voltage reference path

Examples

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Embodiment Construction

[0020] figure 1 An example of a switching device according to the invention is given. It contains a rectangular matrix 10 of nxm type, where n represents the mark I 0 to I n The number of input terminals, m means marked as O 0 to O m The number of matrix outputs for . Each input port and each output port are respectively connected to different transmission lines. The individual transmission lines are interconnected at the level of the interconnection points of the switch units that make up the matrix, and the switch units are marked C 00 to C nm , where the first subscript indicates the input I 0 to I n The subscript, the second subscript indicates the corresponding output O 0 to O m The subscript. At the input or output of the matrix, each transmission line with subscript i or j is denoted by SI respectively i or SO j , and a reference path marked Vcc governed by a reference voltage such as a supply voltage Vcc of 2.5V, the signal path is used to transfer electri...

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Abstract

The switching mechanism has a number of inputs and outputs connected by an interconnection point matrix. The matrix is controlled by electrical signal transmissions on a transmission line following a switching plan. Each transmission line has a signal channel and a reference channel. The interconnection parts are arranged in a matrix such that two distinct transmission lines carry a common voltage reference channel.

Description

technical field [0001] The present invention relates to integrated circuits dedicated to high-speed transmission. Specifically, the present invention relates to a switching device comprising a plurality of input terminals and output terminals interconnected by an interconnection point matrix, wherein the interconnection point matrix is ​​controlled by a control unit, and according to a predefined switching strategy, the slave The electrical signal provided by the input terminal is transmitted to the output terminal, and each transmission line includes a signal path for transmitting the electrical signal and a reference path governed by a given voltage, called a voltage reference path. Background technique [0002] The invention also relates to an integrated circuit comprising such a device. The invention also relates to a digital transmission system comprising an automatic switch integrating a switching device for interconnecting a plurality of transmitters and receivers. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/931H04L12/933H04Q3/52
CPCH04L49/357H04L49/101
Inventor P·巴尔S·克拉马吉朗N·勒卡舍
Owner NXP BV