CN101656612A - Ethernet port switching realizing method and device - Google Patents
Ethernet port switching realizing method and device Download PDFInfo
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- CN101656612A CN101656612A CN200910172971A CN200910172971A CN101656612A CN 101656612 A CN101656612 A CN 101656612A CN 200910172971 A CN200910172971 A CN 200910172971A CN 200910172971 A CN200910172971 A CN 200910172971A CN 101656612 A CN101656612 A CN 101656612A
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Abstract
The invention provides an Ethernet port switching realizing method and a device. The device comprises an analog switch which is used for connecting an external Ethernet port, a first internal networkport and a second internal network port; and the first internal network port or the second internal network port is communicated with the external Ethernet port according to the input level height ofa selection signal of an input pin of the analog switch. For avoiding occupying logic resources, the input pin of the selection signal of the analog switch is grounded by a second resistor (R2) and isalso connected with one end of a code dialing switch (K1), and the other end of the code dialing switch (K1) is connected with an electric source (VCC) by a first resistor (R1). The device simply andconveniently realizes Ethernet switching, does not occupy the logic resources and is suitable for the condition of lack of the logic resources.
Description
Technical field
The present invention relates to Ethernet communication technology field, relate in particular to implementation method and device that a kind of Ethernet interface switches.
Background technology
In data communications equipment, usually need the physical connection path of Ethernet is switched.As under a kind of occasion, needing equipment 1 is connected to Ethernet, and, then needs network is connected to equipment 2 in another kind of occasion.
Usually the use mechanical switch is realized the switching to the physical connection path of Ethernet, but on each network interface, there are 4 tunnel I/O, comprise 2 tunnel inputs, 2 tunnel outputs, realize switching to example with single-pole double-throw switch (SPDT) commonly used, just need 4 single-pole double-throw switch (SPDT)s, respectively this 4 tunnel I/O slave unit, 1 port is switched to equipment 2 ports, it is pretty troublesome to operate.
In recent years, the performance of integrated analog switch was greatly improved, and they can be operated in low-down supply voltage, had lower conducting resistance, microencapsulated size and splendid switching characteristic.Can be widely used in testing equipment, communication product, PBX/PABX equipment and multimedia system etc.The analog switch of low on-resistance and low-work voltage will become the ideal substitute of mechanical relay.
This case applicant has noticed that just analog switch switches advantage easily to circuit, proposes implementation method and device that a kind of preferable Ethernet interface of the present invention switches.
Summary of the invention
The technical problem to be solved in the present invention is to propose implementation method and the device that a kind of Ethernet interface switches, and can realize simply and easily that Ethernet interface switches.
For solving the problems of the technologies described above, the present invention proposes the implementation method that a kind of Ethernet interface switches, and comprising:
Connect external ethernet mouth, the first inner network interface and the second inner network interface respectively with an analog switch, this analog switch has one and selects the signal input tube pin;
Just controlling analog switch by the level of controlling the selection signal of importing this selection signal input tube pin is communicated with the first inner network interface or the second inner network interface with the external ethernet mouth.
Further, said method also can have following characteristics:
Should select the signal input tube pin by one second resistance (R2) ground connection, also will select the signal input tube pin to link to each other simultaneously, the other end of this toggle switch (K1) will be linked to each other with power supply (VCC) by one first resistance (R1) with an end of a toggle switch (K1);
The selection signal of controlling this selection signal input tube pin of input by disconnection or closed this toggle switch (K1) is low level or high level.
Further, said method also can have following characteristics:
The resistance of selecting this first resistance (R1) and this second resistance (R2) is all greater than 1K, and the resistance of this second resistance (R2) is much larger than the resistance of this first resistance (R1).
Further, said method also can have following characteristics:
(K1) is placed on the position that makes things convenient for user's dial-up with this toggle switch.
For solving the problems of the technologies described above, the present invention also proposes the implement device that a kind of Ethernet interface switches, and comprises an analog switch, and this analog switch has one and selects the signal input tube pin, wherein:
This analog switch, in order to linking to each other, just the first inner network interface or the second inner network interface are communicated with the external ethernet mouth according to the level of the selection signal of this selection signal input tube pin of input with an external ethernet mouth, one first inner network interface and one second inner network interface.
Further, said apparatus also can have following characteristics:
The selection signal input tube pin of this analog switch also links to each other with an end of a toggle switch (K1) simultaneously by one second resistance (R2) ground connection, the other end of this toggle switch (K1) is passed through one first resistance (R1) link to each other with power supply (VCC).
Further, said apparatus also can have following characteristics:
The resistance of this first resistance (R1) and this second resistance (R2) is all greater than 1K, and the resistance of this second resistance (R2) is much larger than the resistance of this first resistance (R1).
Implementation method and device that a kind of Ethernet interface that the present invention proposes switches can be realized simply and easily that Ethernet interface switches, and can not can take logical resource, applicable to the situation of logical resource anxiety.
Description of drawings
Fig. 1 is that a kind of analog switch that utilizes of the present invention is realized the circuit diagram that Ethernet interface switches;
Fig. 2 is a kind of circuit diagram of selecting signal that produces of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present invention are described in detail.
Referring to Fig. 1, the figure shows a kind of analog switch that utilizes of the present invention and realize the circuit diagram that Ethernet interface switches.Analog switch of box indicating among the figure, this analog switch has one and selects the signal input tube pin, this analog switch can be connected to the external ethernet mouth one of 2 inner network interfaces, for example network interface 0 or network interface 1, concrete connection status is just decided by the level that is input to the selection signal of selecting the signal input tube pin: when the selection signal of input was low level, analog switch was connected to network interface 0 with the external ethernet mouth; When the selection signal of input was high level, analog switch was connected to network interface 1 with the external ethernet mouth.Certainly, in another embodiment, when the selection signal that also can be designed to import was low level, analog switch was connected to network interface 1 with the external ethernet mouth; When the selection signal of input was high level, analog switch was connected to network interface 0 with the external ethernet mouth.The present invention does not limit at this.
The present invention adopts analog switch to realize that network interface switches, and only needs 1 analog switch to get final product, thereby by the control of selecting the signal level height is realized that easily network interface switches, convenient and swift.
For the generation of selecting signal, can adopt programmable logic device to produce and select signal, for example a logical device internal register is connected to the selection signal input tube pin of analog switch, the value of internal register can be passed through software setting, thereby realizes the switching of network interface by the software control analog switch.
But consider that adopting programmable logic device to produce selects signal demand to take logical resource, therefore, the present invention proposes a kind of scheme of selecting signal to produce of controlling again, by drawing on the resistance or the drop-down selection signal that produces, realize selecting the switching of signal by toggle switch, select signal to control the switching that analog switch is realized network interface then thereby utilize hardware to produce, this scheme can take logical resource, the situation that is particularly useful for the logical resource anxiety, specific implementation can be referring to Fig. 2.
In Fig. 2, the selection signal input tube pin of analog switch also links to each other with the end of a toggle switch K1 simultaneously by resistance R 2 ground connection, and the other end of toggle switch K1 links to each other with power supply VCC by a resistance R 1.When toggle switch K1 disconnects, select the signal input tube pin to pull down to ground by R2, selecting signal is low level 0; During toggle switch K1 conducting, select to move VCC*R2/ (R1+R2) on the signal.Select the value of the value of R2 much larger than R1 in the present invention, for example, when selecting R2=10*R1, then VCC*R2/ (R1+R2) is approximately equal to VCC, and selecting signal is high level 1.In addition, note R1, the resistance of R2 need select big (more than the 1K), less to guarantee selecting signal input and output electric current.Simultaneously, toggle switch need be placed on the place that makes things convenient for dial-up.
Such scheme is by drawing on the resistance or drop-down generation selection signal, realize selecting the switching of signal by toggle switch K1, then realize that by analog switch network interface switches, can realize the switching of Ethernet interface easily, and applicable to the situation of logical resource anxiety.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (7)
1, a kind of implementation method of Ethernet interface switching is characterized in that:
Connect external ethernet mouth, the first inner network interface and the second inner network interface respectively with an analog switch, this analog switch has one and selects the signal input tube pin;
Just controlling analog switch by the level of controlling the selection signal of importing this selection signal input tube pin is communicated with the first inner network interface or the second inner network interface with the external ethernet mouth.
2, the method for claim 1 is characterized in that:
Should select the signal input tube pin by one second resistance (R2) ground connection, also will select the signal input tube pin to link to each other simultaneously, the other end of this toggle switch (K1) will be linked to each other with power supply (VCC) by one first resistance (R1) with an end of a toggle switch (K1);
The selection signal of controlling this selection signal input tube pin of input by disconnection or closed this toggle switch (K1) is low level or high level.
3, method as claimed in claim 2 is characterized in that:
The resistance of selecting this first resistance (R1) and this second resistance (R2) is all greater than 1K, and the resistance of this second resistance (R2) is much larger than the resistance of this first resistance (R1).
4, method as claimed in claim 2 is characterized in that:
(K1) is placed on the position that makes things convenient for user's dial-up with this toggle switch.
5, a kind of implement device of Ethernet interface switching is characterized in that, comprises an analog switch, and this analog switch has one and selects the signal input tube pin, wherein:
This analog switch, in order to linking to each other, just the first inner network interface or the second inner network interface are communicated with the external ethernet mouth according to the level of the selection signal of this selection signal input tube pin of input with an external ethernet mouth, one first inner network interface and one second inner network interface.
6, device as claimed in claim 5 is characterized in that:
The selection signal input tube pin of this analog switch also links to each other with an end of a toggle switch (K1) simultaneously by one second resistance (R2) ground connection, the other end of this toggle switch (K1) is passed through one first resistance (R1) link to each other with power supply (VCC).
7, device as claimed in claim 6 is characterized in that:
The resistance of this first resistance (R1) and this second resistance (R2) is all greater than 1K, and the resistance of this second resistance (R2) is much larger than the resistance of this first resistance (R1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172971A CN101656612A (en) | 2009-09-15 | 2009-09-15 | Ethernet port switching realizing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172971A CN101656612A (en) | 2009-09-15 | 2009-09-15 | Ethernet port switching realizing method and device |
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| Publication Number | Publication Date |
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| CN101656612A true CN101656612A (en) | 2010-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910172971A Pending CN101656612A (en) | 2009-09-15 | 2009-09-15 | Ethernet port switching realizing method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685077A (en) * | 2013-12-18 | 2014-03-26 | 上海斐讯数据通信技术有限公司 | Network data switch and method for switching network data forwarding function |
-
2009
- 2009-09-15 CN CN200910172971A patent/CN101656612A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103685077A (en) * | 2013-12-18 | 2014-03-26 | 上海斐讯数据通信技术有限公司 | Network data switch and method for switching network data forwarding function |
| CN103685077B (en) * | 2013-12-18 | 2017-12-19 | 上海斐讯数据通信技术有限公司 | The method of network data exchange machine and handover network data forwarding function |
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Open date: 20100224 |