CN107819588A - A kind of network interface circuit - Google Patents
A kind of network interface circuit Download PDFInfo
- Publication number
- CN107819588A CN107819588A CN201711085258.6A CN201711085258A CN107819588A CN 107819588 A CN107819588 A CN 107819588A CN 201711085258 A CN201711085258 A CN 201711085258A CN 107819588 A CN107819588 A CN 107819588A
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- CN
- China
- Prior art keywords
- interface circuit
- network interface
- siding ring
- network
- main tapping
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Dc Digital Transmission (AREA)
Abstract
The present invention relates to communication technique field, more particularly to a kind of network interface circuit, wherein, including：Network transformer, including first siding ring and second siding ring, second siding ring include the main tapping positioned at coil both ends and the centre cap from the extraction of second siding ring center；Interface chip, including COM1 and grounding ports, the main tapping connection corresponding with network transformer respectively of each COM1；Wherein, the centre cap of second siding ring suspends with grounding ports；Network interface circuit surge situation can be improved in the case where not increasing cost, improve device performance.
Description
Technical field
The present invention relates to communication technique field, more particularly to a kind of network interface circuit.
Background technology
With the development of network technology, the application scenarios of Ethernet product are more and more common, for accessing the network of outside
Signal, network signal is changed.
Traditional interface circuit generally comprises network transformer, network interface card physical interface chip and network interface socket, network
Transformer typically plays electrical isolation common mode inhibition common mode, differential mode noise etc., however, network transformation in existing interface circuit
Bob smith resistance inductive circuit is formed between the centre cap of device and the grounding ports of interface chip, is easily formed higher
Surge, Ethernet surge test are difficult to pass through.
Solve this problem in the industry and typically use the more preferable network transformer of performance, and increase electrostatic protection device, but
Cost can be improved by so doing.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of network interface circuit, wherein, including：
Network transformer, including first siding ring and second siding ring, the second siding ring include being located at coil both ends
Main tapping and from the second siding ring center draw centre cap；
Interface chip, including COM1 and grounding ports, each COM1 respectively with the network transformer
The corresponding main tapping connection；
Wherein, the centre cap of the second siding ring suspends with the grounding ports.
Above-mentioned network interface circuit, wherein, the connecter type that the interface chip uses is RJ45.
Above-mentioned network interface circuit, wherein, the model S16037G of the network transformer.
Above-mentioned network interface circuit, wherein, the network transformer and the interface chip are carried on a printed circuit
On plate.
Above-mentioned network interface circuit, wherein, the first siding ring of the network transformer includes main tapping with
Heart tap；
The centre cap of the primary side passes through capacitance connection with ground wire.
Above-mentioned network interface circuit, wherein, it is connected with voltage-regulator diode between the main tapping of a test coil.
Above-mentioned network interface circuit, wherein, in addition to：
Network card interface chip, it is connected with the main tapping of the first siding ring.
Above-mentioned network interface circuit, wherein, the interface chip also has two shielding line ends, two shielding lines
End is grounded.
Beneficial effect：A kind of network interface circuit proposed by the present invention, net can be improved in the case where not increasing cost
Network interface circuit surge situation, improve device performance.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of network interface circuit in one embodiment of the invention.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
In a preferred embodiment, as shown in Figure 1, it is proposed that a kind of network interface circuit, wherein it is possible to including：
Network transformer 10, including first siding ring and second siding ring, second siding ring are included positioned at coil both ends
Main tapping TX+, TX-, RX+, RX- and the centre cap TCM, RCM drawn from second siding ring center；
Interface chip 20, including COM1 TX+ ', TX- ', RX+ ', RX- ' and grounding ports GD1, GD2, GD3, GD4,
The main tapping connection corresponding with network transformer respectively of each COM1；
Wherein, the centre cap of second siding ring after grounding ports short circuit with suspending.
In above-mentioned technical proposal, network transformer 10 includes two transformer modules；In first transformer module T1
Main tapping TX+ is connected with COM1 TX+ ', and for transmission signal MDI_TXP, main tapping TX- is connected with COM1 TX- ',
Suspended with grounding ports GD1, GD2, GD3, GD4 for transmission signal MDI_TXN, centre cap TCM；Second transformer mould
Main tapping RX+ is connected with COM1 RX+ ' in block T2, for transmission signal MDI_RXP, main tapping RX- and COM1 RX- '
Connection, suspended with grounding ports GD1, GD2, GD3, GD4 for transmission signal MDI_RXN, centre cap RCM.
In a preferred embodiment, the connecter type that interface chip 20 uses can be RJ45, more specifically, connect
Mouth model RJ45-8P8C.
In a preferred embodiment, the model of network transformer 10 can be S16037G.
In a preferred embodiment, network transformer 10 and interface chip 20 are carried on a printed circuit board.
In a preferred embodiment, the first siding ring of network transformer 10 includes main tapping TD+, TD-, RD+,
RD- and centre cap TCT, RCT；
The centre cap TCT, RCT of primary side and ground wire GND pass through capacitance connection.
In above-mentioned technical proposal, centre cap TCT is connected by electric capacity 5C3 with ground wire GND, and electric capacity 5C3 capacitance can
Think 0.1 μ F；Centre cap RCT is connected by electric capacity 5C2 with ground wire GND, and electric capacity 5C2 capacitance can be 0.1 μ F.
In above-described embodiment, it is preferable that be connected with voltage-regulator diode between the main tapping of a test coil.
In above-mentioned technical proposal, specifically, voltage-regulator diode 5D1, main tapping RD+ are connected between main tapping TD+ and TD-
Voltage-regulator diode 5D2 is connected between RD-.
In above-described embodiment, it is preferable that can also include：
Network card interface chip, TD+, TD-, RD+, RD- are connected with the main tapping of first siding ring.
In above-mentioned technical proposal, network card interface chip sends signal MDI_TP to main tapping TD+, and signal MDI_TN is sent out
Main tapping TD- is delivered to, signal MDI_RP is sent to main tapping RD+, signal MDI_RN is sent to main tapping RD-.
In a preferred embodiment, interface chip 20 also has two shielding line end shield1, shield2, described
Shielding line end shield1, shield2 can be grounded.
In summary, a kind of network interface circuit proposed by the present invention, wherein, including：Network transformer, including primary side
Coil and second siding ring, second siding ring include what is drawn positioned at the main tapping at coil both ends and from second siding ring center
Centre cap；Interface chip, including COM1 and grounding ports, each COM1 are corresponding with network transformer main respectively
Tap connects；Wherein, the centre cap of second siding ring suspends with grounding ports；It can change in the case where not increasing cost
Kind network interface circuit surge situation, improves device performance.
By explanation and accompanying drawing, the exemplary embodiments of the specific structure of embodiment are given, it is smart based on the present invention
God, it can also make other conversions.Although foregoing invention proposes existing preferred embodiment, however, these contents are not intended as
Limitation.
For a person skilled in the art, after reading described above, various changes and modifications undoubtedly will be evident.
Therefore, appended claims should regard whole variations and modifications of the true intention and scope that cover the present invention as.Weighing
Any and all scope and content of equal value, are all considered as still belonging to the intent and scope of the invention in the range of sharp claim.
Claims (8)
- A kind of 1. network interface circuit, it is characterised in that including：Network transformer, including first siding ring and second siding ring, the second siding ring include the master positioned at coil both ends Tap and the centre cap drawn from the second siding ring center；Interface chip, including COM1 and grounding ports, each COM1 are corresponding with the network transformer respectively The main tapping connection；Wherein, the centre cap of the second siding ring suspends with the grounding ports.
- 2. network interface circuit according to claim 1, it is characterised in that the connecter type that the interface chip uses for RJ45。
- 3. network interface circuit according to claim 1, it is characterised in that the model of the network transformer S16037G。
- 4. network interface circuit according to claim 1, it is characterised in that the network transformer and the interface chip It is carried on a printed circuit board.
- 5. network interface circuit according to claim 1 a, it is characterised in that side line for the network transformer Circle includes main tapping and centre cap；The centre cap of the primary side passes through capacitance connection with ground wire.
- 6. network interface circuit according to claim 5, it is characterised in that connect between the main tapping of a test coil It is connected to voltage-regulator diode.
- 7. network interface circuit according to claim 5, it is characterised in that also include：Network interface card physical interface chip, it is connected with the main tapping of the first siding ring.
- 8. network interface circuit according to claim 1, it is characterised in that the interface chip also has two shielding lines End, two shielding line ends are grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085258.6A CN107819588B (en) | 2017-11-07 | 2017-11-07 | Network interface circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085258.6A CN107819588B (en) | 2017-11-07 | 2017-11-07 | Network interface circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107819588A true CN107819588A (en) | 2018-03-20 |
| CN107819588B CN107819588B (en) | 2020-10-30 |
Family
ID=61603869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711085258.6A Active CN107819588B (en) | 2017-11-07 | 2017-11-07 | Network interface circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107819588B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040239465A1 (en) * | 2003-05-21 | 2004-12-02 | Bel Fuse, Inc. | LAN magnetic interface circuit |
| CN201491088U (en) * | 2009-07-21 | 2010-05-26 | 杭州华三通信技术有限公司 | ESD and surge protection device and circuit for Ethernet exchanger |
| CN103428129A (en) * | 2012-05-18 | 2013-12-04 | 合肥宝龙达信息技术有限公司 | Communication terminal and emi protection and surge protection device |
| CN106340761A (en) * | 2015-07-10 | 2017-01-18 | 富士康(昆山)电脑接插件有限公司 | Network interface circuit and network interface connector using same |
-
2017
- 2017-11-07 CN CN201711085258.6A patent/CN107819588B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040239465A1 (en) * | 2003-05-21 | 2004-12-02 | Bel Fuse, Inc. | LAN magnetic interface circuit |
| CN201491088U (en) * | 2009-07-21 | 2010-05-26 | 杭州华三通信技术有限公司 | ESD and surge protection device and circuit for Ethernet exchanger |
| CN103428129A (en) * | 2012-05-18 | 2013-12-04 | 合肥宝龙达信息技术有限公司 | Communication terminal and emi protection and surge protection device |
| CN106340761A (en) * | 2015-07-10 | 2017-01-18 | 富士康(昆山)电脑接插件有限公司 | Network interface circuit and network interface connector using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107819588B (en) | 2020-10-30 |
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