CN204498131U - A kind of DC testing circuit of HW High Way connectivity port and equipment and a kind of photoelectric communication equipment - Google Patents
A kind of DC testing circuit of HW High Way connectivity port and equipment and a kind of photoelectric communication equipment Download PDFInfo
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- CN204498131U CN204498131U CN201420827847.2U CN201420827847U CN204498131U CN 204498131 U CN204498131 U CN 204498131U CN 201420827847 U CN201420827847 U CN 201420827847U CN 204498131 U CN204498131 U CN 204498131U
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Abstract
The utility model relates to the communications field, particularly optical communication field, specifically refers to a kind of DC testing circuit of HW High Way connectivity port and equipment and a kind of photoelectric communication equipment.The utility model is by the two-port in HW High Way, add the first resistance R1 value and the second resistance R2 value respectively, wherein R2>>R1, and hold ground connection at R2, direct voltage source VCC is connected at RI end, and be connected low-pass filtering module and input port at the high speed signal port be connected with R2, like this when two-port connects, the level state detected of input port is from low state transition to high state, the connected state of this HW High Way of this circuit realiration detects, and do not affect the transmission of high speed signal, be applicable to the various circuit arrangements containing high speed signal line cap, be particularly useful for the communication with detection of insertable type module and corresponding slot, realize the multiplexing functions of high speed signal port, improve the installation accuracy of module, and improve the compatibility of insertable type module.
Description
Technical field
The utility model relates to a kind of communications field, particularly a kind of hardware detection field.
Background technology
Between the insertable type module in current electrical communication field and mainboard, conveniently assemble and dismantle, a large amount of have employed slot interface design, and the interface of insertable type module all adopts the plug corresponding with slot, i.e. so-called " golden finger " design." golden finger " refers to the contact portion of slot socket, there is a lot of golden yellow metallic conduction contact interface arranged together, the arrangement of these conductive contact blades is as finger-shaped, so cry " golden finger ", these " golden fingers " have very high conductivity, by the internal circuit of module being connected together with mainboard with the grafting of mainboard socket, in order to determination module and mainboard, whether grafting puts in place under normal circumstances, specialized designs one interface can be detected between module and mainboard, by the voltage status of this interface of electric circuit inspection on mainboard, judge insertable type module whether grafting put in place, and at some in particular cases, putting in place in module is detected interface and may be taken by other functions, and become high speed signal interface, whether grafting puts in place on host slot now just directly can not to judge the module of this module by the voltage detecting this interface, affects installation and the use of module.
This situation by two or more identical function module integrations to a module time, become particularly outstanding, such as in optical communications, Pin6 pin in the module of original SFP module, the special detection pin that puts in place exactly, when putting in place to SFP and the grafting of client mainboard, circuit on client mainboard, the grafting situation of hardware just can be determined by the voltage status detecting Pin6 pin, when when Pin6 pin senses is to low level, just show that the grafting of whole SFP functional module puts in place, its hardware module is upstate, otherwise grafting is not in place, hardware is unavailable, need grafting again, and when two SFP are integrated into a CSFP module, the Pin6 pin of its CSFP outside just becomes the TD2-interface of passage 2, function is high speed signal input port, now just or else by the level state that detects this mouthful to judge CSFP module whether on client mainboard grafting put in place, be badly in need of a kind of method to realize the multiplexing functions of this high speed signal mouth, make it both can complete the transmission of high speed signal, the measuring ability that hardware puts in place can be realized again.
If above-mentioned functions can be realized on all HW High Way connectivity ports simultaneously, and do not affect the transmission of high speed signal, expanded making the function of HW High Way connectivity port, the port connection simultaneously also achieving this HW High Way itself and respective modules is detected, and has broad application prospects.
Utility model content
The purpose of this utility model is to overcome described deficiency existing in prior art, a kind of DC testing circuit of HW High Way connectivity port and equipment and a kind of photoelectric communication equipment are provided, the multiplexing functions of high speed signal port can be realized, make it both can complete the transmission of high speed signal, the measuring ability that hardware puts in place can be realized again.
In order to realize described utility model object, the utility model provides following technical scheme:
A kind of DC testing circuit of HW High Way connectivity port is provided, wherein, described HW High Way link comprises the first port and the second port, testing circuit comprises the first resistance R1, the second resistance R2 and low pass filter blocks, the one termination direct voltage source VCC of described first resistance R1, the other end is connected with the first port of HW High Way; One end ground connection of described second resistance R2, the other end is connected with the second port of HW High Way; Described low pass filter blocks one end connection signal detection port, one end is connected to the second port of described HW High Way in addition;
The resistance value of resistance value >=5* first resistance R1 of described second resistance R2.
Further, in foregoing circuit, when the level state detected by input port of the testing circuit of HW High Way connectivity port is high, show that the first port of above-mentioned high speed signal and the second port are connected well, otherwise then show that connection is bad.Before the two ends of high speed signal does not connect, voltage signal detected by described input port is the low level state of R2 institute ground connection, after two ends connects, above-mentioned R1 and R2 forms a bleeder circuit, voltage VD=VCC*R2/ (R1+R2) detected by input port, due to R2>>R1, so VD ≈ VCC, be high level.
Further, described direct voltage source voltage VCC, the first resistance value R1 and the second resistance value R2 meet following relational expression: Vcc*R2/ (R1+R2) >2V, to meet the requirement of MSA agreement.In MSA agreement, the voltage of <0.8V is defined as low level, and the voltage of >2V is defined as high level, when input Port detecting after circuit communication to magnitude of voltage be V=Vcc*R2/ (R1+R2) >2V, the requirement of MSA agreement can be met.In prior art, the general low level that is defined as by the level of the detection port of module shows to connect well, and in the utility model, good for connecting when needing the level state detected by definition signal detection port to be high level, this change just needs change system to arrange accordingly, implementation method is simple, does not have an impact to the operation of circuit and module.
Further, described first resistance value R1 meets following relationship: R1*50/ (R1+50) >40.
Further, described low pass filter blocks comprises the 3rd resistance R3 and filter capacitor CL, and wherein said filter capacitor CL and the 3rd resistance R3 connects, and the filter capacitor CL after series connection holds ground connection, and the 3rd resistance R3 after series connection holds and is connected with the second corresponding port; Filter capacitor CL after series connection and being connected with described input port between the 3rd resistance R3.When the two-port of HW High Way is connected, in order to the high level that the first resistance R1 holds be detected, need the high speed signal filtering of this signal port, in order to avoid the impact detected direct current high level signal.
Further, the testing circuit of HW High Way connectivity port can be used between insertable type module and corresponding slot, for detecting the connection status of this insertable type module and slot.
Preferred as one, described first port is the high speed signal port of insertable type module, and described second port is the slot port corresponding with the high speed signal port of described insertable type module.The implementation being realized the detection of level by slot mainboard is the simplest and reliable.
Preferred as one, described second port is the high speed signal port of insertable type module, and described first port is the slot port corresponding with the high speed signal port of described insertable type module.There is provided VCC power supply by host slot, implementation is simple.
Accordingly, when the level state detected by input port of the testing circuit of HW High Way connectivity port is high, show that the high speed signal port of insertable type module is connected with corresponding slot.
Further, the high speed signal port of the testing circuit of HW High Way connectivity port comprises positive input port, the negative input port of each high speed signal of plug-in module.
Further, described insertable type module is XFP module, XFP itself has the detection port MOD-ABS realizing module grafting and put in place, but along with the development that Development of Module utilizes, likely there is situation about being taken by original MOD-ABS, so this interface circuit provides a kind of MOD-ABS solution of occupied situation to XFP module.
Further, described insertable type module is CSFP module, and the testing circuit of this HW High Way connectivity port is in order to realize the multiplexing functions of CSFP high-speed port.
Preferred as one, described CSFP high speed signal port be binary channels CSFP module TD1-, TD1+, TD2-and or RD2+ port, this circuit can be suitable for the multiplexing functions of various HW High Way connectivity port.
Preferred as one, the resistance value=4.7K Ω of described second resistance R2, resistance value=511 Ω of described first resistance R1.
Preferred as one, the resistance value=10K Ω of described 3rd resistance R3, the capacitance=0.1UF of described filter capacitor CL.
Preferred as one, the direct current power source voltage VCC=3.3V that described second resistance R2 holds.
Preferred as one, the direct current power source voltage VCC=5V that described second resistance R2 holds.
A checkout equipment for HW High Way connectivity port, by the testing circuit of above-mentioned HW High Way connectivity port, can detect the connection situation of HW High Way in the connectivity port of HW High Way.
A kind of optical, electrical or photoelectric communication equipment, comprises the testing circuit of above-mentioned HW High Way connectivity port.Foregoing circuit may be used in the communication of all high speed signals, and communication equipment generally includes optical, electrical or photoelectric communication equipment.
compared with prior art, the beneficial effects of the utility model: the utility model provides a kind of DC testing circuit of HW High Way connectivity port and equipment and a kind of photoelectric communication equipment, the multiplexing functions of high speed signal port can be realized, make it both can complete the transmission of high speed signal, the measuring ability that hardware puts in place can be realized again.
By the two-port in HW High Way, add the first resistance R1 value and the second resistance R2 value respectively, wherein R2>>R1, and hold ground connection at R2, direct voltage source VCC is connected at RI end, and be connected low-pass filtering module and input port at the high speed signal port be connected with R2, like this when two-port connects, the level state detected of input port is from low state transition to high state, the connected state of this HW High Way of this circuit realiration detects, and do not affect the transmission of high speed signal, be applicable to the various circuit arrangements containing high speed signal line cap, be particularly useful for the communication with detection of insertable type module and corresponding slot, realize the multiplexing functions of high speed signal port, improve the installation accuracy of module, and improve the compatibility of insertable type module.
In addition the utility model also by the 3rd resistance R3 in low pass filter blocks and filter capacitor CL by high speed signal filtering, avoid the crosstalk of signal, improve the accuracy of detection.
Accompanying drawing illustrates:
Fig. 1 is the HW High Way Port detecting circuit diagram of embodiment 1 when not connecting.
Fig. 2 is the HW High Way Port detecting circuit diagram of embodiment 1.
Fig. 3 is the annexation figure of the low pass filter blocks of embodiment 1.
Fig. 4 is the HW High Way Port detecting circuit diagram of embodiment 2.
Embodiment
Below in conjunction with test example and embodiment, the utility model is described in further detail.But this should be interpreted as the scope of theme described in the utility model is only limitted to following embodiment, all technology realized based on the utility model content all belong to scope of the present utility model.
The invention provides a kind of DC testing circuit of HW High Way connectivity port, the multiplexing functions of high speed signal port can be realized, make it both can complete the transmission of high speed signal, again can real port connection state measuring ability.
By the two-port in HW High Way, add the first resistance R1 value and the second resistance R2 value respectively, wherein R2>>R1, and hold ground connection at R2, direct voltage source VCC is connected at RI end, and be connected low-pass filtering module and input port at the high speed signal port be connected with R2, like this when two-port connects, the level state detected of input port is from low state transition to high state, the connected state of this HW High Way of this circuit realiration detects, and does not affect the transmission of high speed signal.
Further, described signal detection module comprises low pass filter blocks and input port, wherein said low pass filter blocks comprises the 3rd resistance R3 and filter capacitor CL, wherein said filter capacitor CL and the 3rd resistance R3 connects, filter capacitor CL after series connection holds ground connection, and the high speed signal end that the 3rd resistance R3 after series connection holds the second resistance R2 larger with resistance value to be connected is connected; Filter capacitor CL after series connection and being connected with described input port between the 3rd resistance R3.When two end points of high speed signal are connected, in order to the DC level that the first resistance R1 holds be detected, needing the high-frequency signal filtering in this HW High Way, having an impact in order to avoid detect DC level signal.
It should be noted that: HW High Way itself is general all can with stopping direct current device, namely the signal of HW High Way transmission itself does not generally have DC component, like this by the input port of circuit of the present invention, the measured direct voltage being the first resistance R1 and the second resistance R2 junction, and the impact of the DC component in HW High Way can not be subject to.And when the signal that HW High Way is transmitted has DC component, need to add in this high speed signal connectivity port stopping direct current device, after above-mentioned DC component filtering, the more corresponding foregoing circuit that connects, such testing result is just more true and reliable.
The high speed transmission of signals of this circuit on this HW High Way does not form impact, achieve the multiplexing functions of this HW High Way like this, accordingly, this circuit can be applied in the plug-in type module with high speed signal line cap and corresponding slot, realizes module grafting and to put in place the expansion of port function of detection and plug-in type module.This circuit application can be had in the communication equipment of high speed signal line cap in various accordingly, comprise optical, electrical or photoelectric communication equipment.
Foregoing circuit can be used for detecting the connection between the high speed signal port of the insertable type module slot port corresponding with it, different according to the design attitude of input port, first port of above-mentioned HW High Way can be defined as the high speed signal port of insertable type module, and correspondence is slot port by the second port definition.According to the principle of foregoing circuit, the utility model has following 2 kinds of execution modes:
Embodiment 1
There is provided a kind of DC testing circuit of HW High Way connectivity port, described HW High Way link comprises the first port A and the second port B, and wherein, testing circuit also comprises the first resistance R1, the second resistance R2 and low pass filter blocks; The one termination direct voltage source VCC of described first resistance R1, the other end is connected with the first port A of HW High Way; One end ground connection of described second resistance R2, the other end is connected with the second port B of HW High Way; Described low pass filter blocks one end connection signal detection port, one end is connected to the second port B of described HW High Way in addition; The resistance value of resistance value >=5* first resistance R1 of described second resistance R2.
When first port A of above-mentioned HW High Way is not connected with the second port B, as shown in Figure 1, the level state that described input port detects is the VD=0 of R2 end is low level state.When the first port A of above-mentioned HW High Way and the second port B connects, as shown in Figure 2, above-mentioned first resistance R1 and the second resistance R2 forms bleeder circuit, the now level state VD=Vcc*R2/ (R1+R2) detected by input port of the testing circuit of HW High Way connectivity port, for high level state, show that the first port of above-mentioned high speed signal and the second port are connected well.In the present embodiment, the implementation being realized the detection of level by slot mainboard is the simplest and reliable.
Further, described direct voltage source voltage VCC, the first resistance value R1 and the second resistance value R2 meet following relational expression: Vcc*R2/ (R1+R2) >2V, to meet the requirement of MSA agreement.In MSA agreement, the voltage of <0.8V is defined as low level, and the voltage of >2V is defined as high level, when input Port detecting after circuit communication to magnitude of voltage be V=Vcc*R2/ (R1+R2) >2V, the requirement of MSA agreement can be met.In prior art, MOD-ABS is defined as low level, and in the utility model, need by be defined as during high level detected by input port connect good.
Further, described first resistance value R1 meets following relationship: R1*50/ (R1+50) >40.
Further, in described circuit, low pass filter blocks, as shown in Figure 3, comprise the 3rd resistance R3 and filter capacitor CL, described low pass filter blocks comprises the 3rd resistance R3 and filter capacitor CL, and wherein said filter capacitor CL and the 3rd resistance R3 connects, filter capacitor CL after series connection holds ground connection, and the 3rd resistance R3 after series connection holds and is connected with the second corresponding port B; Filter capacitor CL after series connection and being connected with described input port between the 3rd resistance R3.When the two-port of HW High Way is connected, in order to the high level that the first resistance R1 holds be detected, need the high speed signal filtering of this signal port, in order to avoid the impact detected direct current high level signal.
Further, the high speed signal port of the testing circuit of HW High Way connectivity port comprises positive input port, the negative input port of each high speed signal of plug-in module.
Further, described insertable type module is XFP module, XFP itself has the detection port MOD-ABS realizing module grafting and put in place, but along with the development that Development of Module utilizes, likely there is situation about being taken by original MOD-ABS, so this interface circuit provides a kind of MOD-ABS solution of occupied situation to XFP module.
Further, described insertable type module is CSFP module, and the testing circuit of this HW High Way connectivity port is in order to realize the multiplexing functions of CSFP high-speed port.
Preferred as one, described CSFP high speed signal port be binary channels CSFP module TD1-, TD1+, TD2-and or RD2+ port, this circuit can be suitable for the multiplexing functions of various HW High Way connectivity port.
Preferred as one, the resistance value=4.7K Ω of described second resistance R2, resistance value=511 Ω of described first resistance R1.
Preferred as one, the resistance value=10K Ω of described 3rd resistance R3, the capacitance=0.1UF of described filter capacitor CL.
Preferred as one, the direct current power source voltage VCC=3.3V that described second resistance R2 holds.
Preferred as one, the direct current power source voltage VCC=5V that described second resistance R2 holds.
Embodiment 2
As shown in Figure 4, a kind of DC testing circuit of HW High Way connectivity port, comprise the first resistance R1, the second resistance R2 and low pass filter blocks, wherein one end of the first resistance R1 connects the second port B of HW High Way, and the other end connects direct voltage source VCC; One end of described second resistance 2 connects the first port A of HW High Way, other end ground connection; One end connection signal detection port of described low pass filter blocks, the other end connects the first port A of HW High Way; The resistance value of resistance value >=5* first resistance R1 of described second resistance R2.Level state now detected by input port is the low-voltage of R2 end.
When above-mentioned high speed signal first port A and above-mentioned high speed signal second port B connects, foregoing circuit forms a bleeder circuit at the interface of the first port A and the second port B, level state VD=VCC*R2/ (R1+R2) now detected by input port, due to R2>>R1, so VD ≈ VCC is now high level state, namely be when the level state detected by input port by low become high time show that this high speed signal line cap is connected good, connect good between corresponding insertable type module and corresponding slot, its hardware capability can be used.In the present embodiment, provide VCC power supply by host slot, implementation is simple.
Its decision procedure and port definition, and the constituted mode of low pass filter blocks is identical with embodiment 1, repeats no more.
The testing circuit of the HW High Way connectivity port of above-described embodiment 1 and embodiment 2, can be used in the detection of various HW High Way port connection state, also may be used in the detection of high speed signal line cap of various communication equipment, these communication equipments comprise optical, electrical or optoelectronic device simultaneously.Foregoing circuit for realizing the multiplexing functions of high speed signal line cap, simultaneously also for detecting the connection situation of various plug-in type module and corresponding slot.
The utility model provides a kind of DC testing circuit of HW High Way connectivity port in a word, can realize the multiplexing functions of high speed signal port, makes it both can complete the transmission of high speed signal, can realize again the measuring ability that hardware puts in place.By the two-port in HW High Way, add the first resistance R1 value and the second resistance R2 value respectively, wherein R2>>R1, and hold ground connection at R2, direct voltage source VCC is connected at RI end, and be connected low-pass filtering module and input port at the high speed signal port be connected with R2, like this when two-port connects, the level state detected of input port is from low state transition to high state, the connected state of this HW High Way of this circuit realiration detects, and do not affect the transmission of high speed signal, be applicable to the various circuit arrangements containing high speed signal line cap, be particularly useful for the communication with detection of insertable type module and corresponding slot, realize the multiplexing functions of high speed signal port, improve the installation accuracy of module, and improve the compatibility of insertable type module.In addition the utility model also by the 3rd resistance R3 in low pass filter blocks and filter capacitor CL by high speed signal filtering, avoid the crosstalk of signal, improve the accuracy of detection.
Claims (10)
1. the DC testing circuit of a HW High Way connectivity port, described HW High Way link comprises the first port and the second port, it is characterized in that, described testing circuit comprises the first resistance R1, the second resistance R2 and low pass filter blocks, the one termination direct voltage source VCC of described first resistance R1, the other end is connected with the first port of HW High Way; One end ground connection of described second resistance R2, the other end is connected with the second port of HW High Way; Described low pass filter blocks one end connection signal detection port, one end is connected to the second port of described HW High Way in addition;
The resistance value of resistance value >=5* first resistance R1 of described second resistance R2.
2. the DC testing circuit of HW High Way connectivity port as claimed in claim 1, it is characterized in that, described direct voltage source voltage VCC, the first resistance value R1 and the second resistance value R2 meet following relational expression: Vcc*R2/ (R1+R2) >2V.
3. the DC testing circuit of HW High Way connectivity port as claimed in claim 2, it is characterized in that, described first resistance value R1 meets following relationship: R1*50/ (R1+50) >40.
4. the DC testing circuit of HW High Way connectivity port as claimed in claim 3, it is characterized in that, described low pass filter blocks comprises the 3rd resistance R3 and filter capacitor CL, wherein said filter capacitor CL and the 3rd resistance R3 connects, filter capacitor CL after series connection holds ground connection, and the 3rd resistance R3 after series connection holds and is connected with the second corresponding port; Filter capacitor CL after series connection and being connected with described input port between the 3rd resistance R3.
5. the DC testing circuit of HW High Way connectivity port as claimed in claim 4, it is characterized in that, described first port is the high speed signal port of insertable type module, and described second port is the slot port corresponding with the high speed signal port of described insertable type module.
6. the DC testing circuit of HW High Way connectivity port as claimed in claim 4, it is characterized in that, described second port is the high speed signal port of insertable type module, and described first port is the slot port corresponding with the high speed signal port of described insertable type module.
7. the DC testing circuit of the HW High Way connectivity port as described in claim 5 or 6, is characterized in that, when the level state detected by input port is high, shows that the high speed signal port of insertable type module is connected with corresponding slot.
8. the DC testing circuit of HW High Way connectivity port as claimed in claim 7, is characterized in that, the resistance value=4.7K Ω of described second resistance R2, resistance value=511 Ω of described first resistance R1;
Resistance value=10K the Ω of described 3rd resistance R3, the capacitance=0.1UF of described filter capacitor CL;
Described direct current power source voltage VCC=3.3V, or be VCC=5V.
9. a checkout equipment for HW High Way connectivity port, is characterized in that, comprises the DC testing circuit of a kind of HW High Way connectivity port as described in one of claim 1 to 8.
10. a photoelectric communication equipment, is characterized in that, comprises the DC testing circuit of a kind of HW High Way connectivity port as described in one of claim 1 to 8.
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| CN201420827847.2U CN204498131U (en) | 2014-12-24 | 2014-12-24 | A kind of DC testing circuit of HW High Way connectivity port and equipment and a kind of photoelectric communication equipment |
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| CN201420827847.2U CN204498131U (en) | 2014-12-24 | 2014-12-24 | A kind of DC testing circuit of HW High Way connectivity port and equipment and a kind of photoelectric communication equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108322882A (en) * | 2017-01-17 | 2018-07-24 | 联芯科技有限公司 | Earphone plug detection circuit, headset detection device and audio frequency apparatus |
| CN110389278A (en) * | 2019-08-01 | 2019-10-29 | 珠海市运泰利自动化设备有限公司 | A kind of B2B connector device is fitted on level detecting apparatus |
-
2014
- 2014-12-24 CN CN201420827847.2U patent/CN204498131U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108322882A (en) * | 2017-01-17 | 2018-07-24 | 联芯科技有限公司 | Earphone plug detection circuit, headset detection device and audio frequency apparatus |
| CN108322882B (en) * | 2017-01-17 | 2021-01-29 | 联芯科技有限公司 | Earphone plug detection circuit, earphone detection device and audio equipment |
| CN110389278A (en) * | 2019-08-01 | 2019-10-29 | 珠海市运泰利自动化设备有限公司 | A kind of B2B connector device is fitted on level detecting apparatus |
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