Ethernet communication circuit capable of avoiding crash of physical layer circuit caused by lightning surge

A technology of network communication and physical layer, applied in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as crashes and physical layer circuit crashes, and reduce The effect of area requirements

Inactive Publication Date: 2019-10-22
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although the traditional physical layer circuit can use the internal lightning surge protection circuit to withstand the impact of the lightning surge without causing damage to the circuit, the lightning surge still often causes the physical layer circuit to crash (crash, crash) abnormal situation occurs

Method used

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  • Ethernet communication circuit capable of avoiding crash of physical layer circuit caused by lightning surge

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Embodiment Construction

[0018] Embodiments of the present invention will be described below in conjunction with related drawings. In the drawings, the same reference numerals represent the same or similar elements or method flows.

[0019] figure 1 It is a simplified functional block diagram of the Ethernet communication circuit 100 according to an embodiment of the present invention. The Ethernet communication circuit 100 includes an Ethernet cable connector 110, an Ethernet transformer 120, an Ethernet physical layer circuit 130, and a plurality of coupling capacitors.

[0020] The Ethernet cable connector 110 is used for data communication with other devices through an Ethernet cable. In practice, the Ethernet cable connector 110 can be realized by a male Ethernet cable connector or a female Ethernet cable connector.

[0021] The Ethernet transformer 120 is coupled to the Ethernet cable connector 110 and configured to perform voltage isolation and filter processing on the signal transmitted fro...

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PUM

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Abstract

The invention provides an Ethernet communication circuit, which comprises an Ethernet cable connector used for carrying out data communication with other devices through an Ethernet cable, an Ethernettransformer which is coupled to the Ethernet cable connector and is arranged to process signals transmitted by the Ethernet cable connector, an Ethernet physical layer circuit which is coupled to theEthernet transformer and is configured to perform physical layer operation on signals transmitted by the Ethernet transformer, and a plurality of coupling capacitors which are respectively arranged between the local signal pin of the Ethernet physical layer circuit and the Ethernet transformer.

Description

technical field [0001] The invention relates to an Ethernet communication circuit, in particular to an Ethernet communication circuit capable of avoiding a physical layer circuit shutdown caused by a lightning surge. Background technique [0002] Lightning surge (transient voltage surge, or transient voltage surge) may cause damage to the physical layer circuit in the Ethernet communication circuit, so many manufacturers of physical layer circuits will install various lightning surge protection inside the physical layer circuit circuit to enhance the ability of the physical layer circuit to resist lightning surges. [0003] However, although the traditional physical layer circuit can use the internal lightning surge protection circuit to withstand the impact of the lightning surge without causing damage to the circuit, the lightning surge still often causes the physical layer circuit to crash (crash, crash) exception occurs. Contents of the invention [0004] In view of ...

Claims

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Application Information

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IPC IPC(8): H04L12/02H02H9/04
CPCH02H9/042H04L12/02
Inventor 吴瑞郁俞丁发颜承正王文阜
Owner REALTEK SEMICON CORP
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