CN106301549A - A kind of 100G loopback module based on QSFP28 encapsulation - Google Patents
A kind of 100G loopback module based on QSFP28 encapsulation Download PDFInfo
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- CN106301549A CN106301549A CN201610871810.3A CN201610871810A CN106301549A CN 106301549 A CN106301549 A CN 106301549A CN 201610871810 A CN201610871810 A CN 201610871810A CN 106301549 A CN106301549 A CN 106301549A
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- mcu
- qsfp28
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- led
- interface
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/073—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal
- H04B10/0731—Testing or characterisation of optical devices, e.g. amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/24—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using dedicated network management hardware
Abstract
The invention discloses a kind of 100G loopback module based on QSFP28 encapsulation, it is intended to providing the convenient, fast and port test solution of low cost for equipment production firm, it includes structural member and PCB assembly；Wherein, structural member includes: upper cover, solution lock slide, drag hook, one or more fixing connector and lower cover；PCB assembly includes: circuit board and the lamp group being arranged on circuit board one end；Circuit board includes: QSFP28 interface, supply control unit, power supply chip, MCU micro-control unit, CDR clock and data recovery chip, module temperature and supply voltage monitoring unit.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of 100G loopback module based on QSFP28 encapsulation.
Background technology
In recent years, along with the accelerated development of the industries such as the Internet, cloud computing and big data, the competition of all conglomeraties substantially added
Play, IT infrastructure has become as these new trends of reply, the key of enterprise competitiveness, the therefore data center of every profession and trade
Pace of construction is also constantly being accelerated！And inside data center, the Ethernet upgrading of a new round is the most in process, according to investigation
The latest survey report display of mechanism Crehan Research, the coming years, 100G Ethernet will be surging in data center field
Increase.Meanwhile, the light that QSFP (Quad Small Form-factor Pluggable, four-way SFP) encapsulates
(such as 100G QSFP28 optical module, has four transmission channels to module, and the transfer rate of every passage is all 25Gbps；“28”
Representing each passage flank speed is 28Gbps) it is following 100G exchange and the predominant package form of route connection, and be to promote
Make 100G in the key of the large-scale application of data center.The optical module having had QSFP28 to encapsulate at present occurs, as
QSFP28-LR4, QSFP28-SR4 etc..But these modules be all by have actual functional capability 100G optical device manufacture and
Becoming, its manufacturing cost is the highest, is not suitable for switch manufacturer and router vendors tests its device port, or can cause
Testing cost is high.
Summary of the invention
An object of the present invention at least that, the problem existed for above-mentioned prior art, it is provided that a kind of based on
The 100G loopback module of QSFP28 encapsulation, it is possible to the device cost of loopback module is greatly reduced, thus reduces the survey of system manufacturer
Examination cost.
To achieve these goals, the technical solution used in the present invention is:
A kind of 100G loopback module based on QSFP28 encapsulation, including structural member and PCB assembly；Wherein, structural member includes:
Upper cover, solution lock slide, drag hook, one or more fixing connector and lower cover；PCB assembly includes: circuit board and be arranged on electricity
The lamp group of plate one end, road；
Between the cavity of the both ends open that PCB assembly is arranged on upper cover and lower cover formation；Lamp group on PCB assembly and cavity
The opening of front end is correspondingly arranged, for the light sent through lamp group；Upper cover and lower cover are by one or more fixing connectors
Connect；Drag hook is connected rotatably with solving lock slide, solves lock slide and is fixedly installed on the both sides of upper cover front end, by rotating
Pull hook, can produce relative displacement with driving structure part, it is achieved the unblock of loopback module.
Preferably, foregoing circuit plate includes: QSFP28 interface, supply control unit, power supply chip, MCU micro-control unit,
CDR clock and data recovery chip, module temperature and supply voltage monitoring unit；Wherein,
QSFP28 interface, for being electrically connected with system side equipment；
Supply control unit, is connected with QSFP28 interface, is used for as power supply chip, MCU, lamp group, module temperature and confession
Piezoelectric voltage monitoring unit is powered；
Power supply chip, the power supply in being CDR chip input range by the Power convert that supply control unit inputs, for
CDR chip power supply；
Lamp group, is connected with MCU, the state instruction of the controlling on lamp group signal display correspondence for providing according to MCU；
Module temperature and supply voltage monitoring unit, including be arranged on supply control unit, power supply chip, MCU and
The sampled point of CDR chip, is used for obtaining the temperature of sampled point and voltage and being sent to MCU.
Preferably, above-mentioned MCU, it is connected with QSFP28 interface by management interface, is used for by QSFP28 interface to system
Side apparatus sends MCU warning signal, and/or receives MCU control signal by QSFP28 interface from system side equipment；Pass through I2C
IC bus interface is connected with CDR, is used for passing through I2C interface sends CDR control signal to CDR, and/or passes through I2C interface
CDR warning signal is received from CDR；The duty of LED group is controlled by controlling on lamp group signal.
Preferably, above-mentioned management interface includes I2C management data input and output SDA signal line and management data clock SCL
Holding wire；Wherein, SDA signal line is for sending MCU control signal to MCU and/or receiving MCU warning signal from MCU；SCL believes
Number line is for providing clock signal to MCU.
Preferably, above-mentioned CDR chip, receive 4 for the receiving terminal by being connected with QSFP28 interface from system side equipment
Road 25G signal, is recovered 4 road 25G signals by phase-locked loop circuit, and is sent to by the transmitting terminal being connected with QSFP28 interface
System side equipment.
Preferably, above-mentioned I2C interface includes I2C data holding wire and I2C clock cable；Wherein, I2C data holding wire
For sending CDR control signal to CDR and/or receiving CDR warning signal from CDR；I2C clock cable is for providing to CDR
Clock signal.
Preferably, above-mentioned lamp group is LED group, including the first LED and second LED with different colours.
Preferably, determine that the QSFP28 port of system side equipment does not exist event as MCU according to the MCU control signal received
Barrier, determines CDR no alarm according to CDR warning signal, and determines that the operating temperature of module and voltage are being preset according to monitoring signal
Normal range of operation in time, MCU controls by controlling on lamp group signal that the first LED is the brightest and the second LED is gone out；
When MCU determines system side equipment instruction 100G ring based on QSFP28 encapsulation according to the MCU control signal received
When returning module entrance low power mode of operation, MCU controls the first LED flicker by controlling on lamp group signal and the second LED is gone out；
When according to the MCU control signal received, MCU determines that system side equipment releases the 100G encapsulated based on QSFP28
When the sheet of loopback module selects, MCU controls by controlling on lamp group signal that the first LED is the brightest and the second LED Chang Liang；
When according to the MCU control signal received, MCU determines that system side equipment releases the 100G encapsulated based on QSFP28
The sheet choosing of loopback module, and when instruction 100G loopback module based on QSFP28 encapsulation enters low power mode of operation, MCU passes through
Controlling on lamp group signal controls the first LED flicker and the second LED Chang Liang；
When according to the monitoring signal received, MCU determines that the operating temperature of module or voltage is not in default working range
Time, MCU controls by controlling on lamp group signal that the first LED is the brightest and the second LED flashes.
In sum, owing to have employed technique scheme, the present invention at least has the advantages that
Being shown by the different conditions of LED group, tester can be according to the 100G loopback mould encapsulated based on QSFP28
The various duties of block, judge whether the high-speed line interface of system side equipment exists fault immediately, if there is fault, and can
System side equipment is investigated or is modified the operations such as configuration to indicate according to the different conditions of LED group rapidly, and energy
Enough quick obtaining corresponding LED group display feedbacks, therefore, it is possible to significantly simplify the test operation to system side equipment and improve
The testing efficiency of system side equipment.Owing to 4 road 25G signals being carried out extensive only with a piece of CDR chip with phase-locked loop circuit
Redoubling loopback, it is possible to the device cost of loopback module is greatly reduced, thus the testing cost of system manufacturer is greatly reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation of the 100G loopback module based on QSFP28 encapsulation that the embodiment of the present invention one provides；
Fig. 2 is the STRUCTURE DECOMPOSITION signal of the 100G loopback module based on QSFP28 encapsulation that the embodiment of the present invention one provides
Figure；
Fig. 3 is the lamp group front view of the 100G loopback module based on QSFP28 encapsulation that the embodiment of the present invention one provides；
Fig. 4 is the electric function block diagram of the 100G loopback module based on QSFP28 encapsulation that the embodiment of the present invention two provides.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the present invention is further elaborated, so that the purpose of the present invention, technology
Scheme and advantage are clearer.Should be appreciated that specific embodiment described herein, and need not only in order to explain the present invention
In limiting the present invention.
Embodiment one
As depicted in figs. 1 and 2, the disclosed 100G loopback module based on QSFP28 encapsulation of the embodiment of the present invention one includes knot
Component and PCB assembly；Wherein, structural member includes: upper cover, solution lock slide, drag hook, one or more fixing connector, protection plug
(optional) and lower cover；PCB assembly includes: circuit board and be arranged on the lamp group of circuit board one end (such as, by having difference
First LED of color and the LED group of the second LED composition).
Between the cavity of the both ends open that PCB assembly is arranged on upper cover and lower cover formation, optional between upper cover and PCB assembly
Be provided with one or more conductive rubber press strip；Lamp group on PCB assembly is correspondingly arranged with the opening of cavity front end, for thoroughly
Cross the light that lamp group sends, it is simple to the state of tester's observation lamp group；The protection plug opening for closed cavity front end；Upper cover
Connected by one or more fixing connectors (such as countersunk head M1.6 × 6 × 2.5) with lower cover；Drag hook can be relative with solution lock slide
Connect rotationally, solve lock slide and be fixedly installed on the both sides of upper cover front end, by rotating pull hook, phase can be produced with driving structure part
To displacement, thus realize the unblock of loopback module, in order to loopback module taken off from system side equipment.
During assembling, can first LED light device be welded on the interface that circuit board is reserved, then according to correct order will
PCB assembly and structural member are assembled into module, and can be formed as shown in Figure 3 is tubular by red LED pipe and green LEDs
The LED group panel become.
Embodiment two
As shown in Figure 4, the circuit board in the 100G loopback module based on QSFP28 encapsulation that the embodiment of the present invention two provides
Including: QSFP28 interface, supply control unit, power supply chip, MCU (Micro Control Unit, micro-control unit), CDR
(Clock Data Recovery, clock and data recovery) chip, module temperature and supply voltage monitoring unit.
Wherein, QSFP28 interface, for being electrically connected with system side equipment.System side equipment can include friendship to be tested
Change planes, router etc..
Supply control unit, is connected with QSFP28 interface (such as with the VCCIN 3.3V outfan of QSFP28 interface even
Connect), for powering for power supply chip, MCU, LED group, module temperature and supply voltage monitoring unit power.
Power supply chip, the power supply in being CDR chip input range by the Power convert that supply control unit inputs, for
CDR chip power supply.For example, it is possible to the power supply that Power convert is 1.8V of the 3.3V that supply control unit is provided, to meet CDR
The operating voltage range of chip.
MCU, is connected with QSFP28 interface by management interface (such as, serial management interface), for being connect by QSFP28
Mouth sends MCU warning signal to system side equipment, and/or receives MCU control signal by QSFP28 interface from system side equipment；
Pass through I2C (Inter-Integrated Circuit, IC bus) interface is connected with CDR, is used for passing through I2C interface to
CDR sends CDR control signal, and/or passes through I2C interface receives CDR warning signal from CDR；By controlling on lamp group signal (such as
Control-1 and Control-2) control LED group duty.
In a preferred embodiment, management interface can include I2C management data input and output SDA signal line and management number
According to clock SCL signal line；Wherein, SDA signal line is for sending MCU control signal to MCU and/or receiving MCU alarm letter from MCU
Number；SCL signal line is for providing MCU clock signal to MCU.Specifically, MCU warning signal may include that data losing lock alarm,
The information such as supply voltage height alarm, temperature height alarm.
Further, the I between MCU and CDR2C interface can include I2C data holding wire and I2C clock cable.
Wherein, I2C data holding wire is for sending CDR control signal to CDR and/or receiving CDR warning signal from CDR；I2C clock is believed
Number line is for providing CDR clock signal to CDR.
CDR chip, for receiving 4 road 25G signals, root by the receiving terminal being connected with QSFP28 interface from system side equipment
According to from I2The control signal from MCU that C interface receives, recovers 4 road 25G signals by phase-locked loop circuit, and by with
The transmitting terminal that QSFP28 interface connects is sent to system side equipment.System side equipment can be according to the 4 road 25G signals received
No have whether error code exists fault to each the 25G high-speed line interface in the QSFP28 port judging system side equipment.If
There is fault, then can pass through I2C bus sends CDR warning signal to MCU.
LED group, is connected with MCU, the state instruction (example of the controlling on lamp group signal display correspondence for providing according to MCU
Such as the LED Chang Liang respectively of different colours in lamp group, go out or flash).
Module temperature and supply voltage monitoring unit, including being arranged on supply control unit, power supply chip, MCU, CDR
The sampled point of chip, is used for obtaining the temperature of sampled point and voltage and being sent to MCU.MCU and then QSFP28 interface can be passed through
It is sent to system side equipment.
Embodiment three
In a preferred embodiment, when being connected to such as exchange by above-mentioned 100G loopback module based on QSFP28 encapsulation
After the QSFP28 port of the system side equipment such as machine, router, loopback module can be according to each to loopback module of system side equipment
Plant and control operation, by the state that the display of LED group is corresponding.
Specifically, determine that the QSFP28 port of system side equipment does not exist event as MCU according to the MCU control signal received
Barrier, determines CDR no alarm according to CDR warning signal, and determines that the operating temperature of module and voltage are being preset according to monitoring signal
Normal range of operation in time (such as, temperature is 40～60 degree, and voltage is 3.2～3.5V), MCU pass through controlling on lamp group signal
Control-1 controls LED1 (such as, green) Chang Liang, and it is (such as, red to control LED2 by controlling on lamp group signal Control-2
Color) go out.State according to LED group i.e. can determine that 100G loopback module based on QSFP28 encapsulation is in normal operating conditions.
When MCU determines system side equipment instruction 100G ring based on QSFP28 encapsulation according to the MCU control signal received
Returning (such as, operating temperature is 20～40 degree, and voltage is 3.0～3.2V) when module enters low power mode of operation, MCU passes through lamp
Group control signal Control-1 controls LED1 flicker, and is gone out by controlling on lamp group signal Control-2 control LED2.According to LED
The state of lamp group i.e. can determine that 100G loopback module based on QSFP28 encapsulation is in low-power consumption duty.
When according to the MCU control signal received, MCU determines that system side equipment releases the 100G encapsulated based on QSFP28
When the sheet of loopback module selects, MCU controls LED1 Chang Liang by controlling on lamp group signal Control-1, and by controlling on lamp group signal
Control-2 controls LED2 Chang Liang.State according to LED group i.e. can determine that 100G loopback module based on QSFP28 encapsulation not
Enter duty.
When according to the MCU control signal received, MCU determines that system side equipment releases the 100G encapsulated based on QSFP28
Loopback module sheet selects, and (such as, temperature when instruction 100G loopback module based on QSFP28 encapsulation enters low power mode of operation
Being 20～40 degree, voltage is 3.0～3.2V), MCU controls LED1 by controlling on lamp group signal Control-1 and flashes, and passes through lamp
Group control signal Control-2 controls LED2 Chang Liang.State according to LED group i.e. can determine that 100G based on QSFP28 encapsulation
Loopback module is in holding state.
When according to the monitoring signal received, MCU determines that the operating temperature of module or voltage is not in default working range
Time (such as, temperature is more than 60 degree, or voltage is more than 3.5V), control LED1 flicker by controlling on lamp group signal Control-1,
And control LED2 Chang Liang by controlling on lamp group signal Control-2.State according to LED group i.e. can determine that and seals based on QSFP28
The 100G loopback module operating temperature of dress or voltage are beyond preset range.
Being shown by the different conditions of above-mentioned LED group, tester can be according to the 100G ring encapsulated based on QSFP28
Return the various duties of module, judge whether the interface of system side equipment exists fault immediately, if there is fault, permissible
Indicate according to the different conditions of LED group rapidly and system side equipment is investigated or is modified the operations such as configuration, and can
Quick obtaining corresponding LED group display feedback, therefore, it is possible to significantly simplify the test operation to system side equipment and improve system
The testing efficiency of system side apparatus.Owing to 4 road 25G signals being recovered only with a piece of CDR chip with phase-locked loop circuit
And loopback, it is possible to the device cost of loopback module is greatly reduced, thus reduces the testing cost of system manufacturer.
Embodiment of above is merely to illustrate presently preferred embodiments of the present invention, rather than limitation of the present invention.Correlation technique
The technical staff in field in the case of without departing from the principle of the present invention and scope, various replacements, modification and the improvement made
Should be included within the scope of the present invention.
Claims (8)
1. a 100G loopback module based on QSFP28 encapsulation, it is characterised in that include structural member and PCB assembly；Wherein, knot
Component includes: upper cover, solution lock slide, drag hook, one or more fixing connector and lower cover；PCB assembly includes: circuit board
With the lamp group being arranged on circuit board one end；
Between the cavity of the both ends open that PCB assembly is arranged on upper cover and lower cover formation；Lamp group on PCB assembly and cavity front end
Opening be correspondingly arranged, for the light that sends through lamp group；Upper cover and lower cover are connected by one or more fixing connectors；
Drag hook is connected rotatably with solving lock slide, solves lock slide and is fixedly installed on the both sides of upper cover front end, by rotating pull hook,
Relative displacement can be produced, it is achieved the unblock of loopback module with driving structure part.
100G loopback module based on QSFP28 encapsulation the most according to claim 1, it is characterised in that described circuit board bag
Include: QSFP28 interface, supply control unit, power supply chip, MCU micro-control unit, CDR clock and data recovery chip, module temperature
Degree and supply voltage monitoring unit；Wherein,
QSFP28 interface, for being electrically connected with system side equipment；
Supply control unit, is connected with QSFP28 interface, for electric for power supply chip, MCU, lamp group, module temperature and power supply
Pressure monitoring unit is powered；
Power supply chip, the power supply in being CDR chip input range by the Power convert that supply control unit inputs, for CDR
Chip power supply；
Lamp group, is connected with MCU, the state instruction of the controlling on lamp group signal display correspondence for providing according to MCU；
Module temperature and supply voltage monitoring unit, including being arranged on supply control unit, power supply chip, MCU and CDR
The sampled point of chip, is used for obtaining the temperature of sampled point and voltage and being sent to MCU.
100G loopback module based on QSFP28 encapsulation the most according to claim 2, it is characterised in that described MCU, passes through
Management interface is connected with QSFP28 interface, for sending MCU warning signal by QSFP28 interface to system side equipment, and/or
MCU control signal is received from system side equipment by QSFP28 interface；Pass through I2C IC bus interface is connected with CDR, uses
In passing through I2C interface sends CDR control signal to CDR, and/or passes through I2C interface receives CDR warning signal from CDR；Pass through lamp
Group control signal controls the duty of LED group.
100G loopback module based on QSFP28 encapsulation the most according to claim 3, it is characterised in that described management interface
Including I2C management data input and output SDA signal line and management data clock SCL signal line；Wherein, SDA signal line for
MCU sends MCU control signal and/or receives MCU warning signal from MCU；SCL signal line is for providing clock signal to MCU.
100G loopback module based on QSFP28 encapsulation the most according to claim 2, it is characterised in that described CDR chip,
Receive 4 road 25G signals for the receiving terminal by being connected with QSFP28 interface from system side equipment, recovered by phase-locked loop circuit
Go out 4 road 25G signals, and be sent to system side equipment by the transmitting terminal being connected with QSFP28 interface.
100G loopback module based on QSFP28 encapsulation the most according to claim 5, it is characterised in that described I2C interface bag
Include I2C data holding wire and I2C clock cable；Wherein, I2C data holding wire for CDR send CDR control signal and/or
CDR warning signal is received from CDR；I2C clock cable is for providing clock signal to CDR.
100G loopback module based on QSFP28 encapsulation the most according to any one of claim 1 to 6, it is characterised in that
Described lamp group is LED group, including the first LED and second LED with different colours.
100G loopback module based on QSFP28 encapsulation the most according to claim 7, it is characterised in that when MCU is according to connecing
The MCU control signal received determines that the QSFP28 port of system side equipment does not exist fault, determines CDR according to CDR warning signal
No alarm, and when determining that the operating temperature of module and voltage are in default normal range of operation according to monitoring signal, MCU passes through
Controlling on lamp group signal controls that the first LED is the brightest and the second LED is gone out；
When MCU determines system side equipment instruction 100G loopback mould based on QSFP28 encapsulation according to the MCU control signal received
When block enters low power mode of operation, MCU controls the first LED flicker by controlling on lamp group signal and the second LED is gone out；
When according to the MCU control signal received, MCU determines that system side equipment releases the 100G loopback encapsulated based on QSFP28
When the sheet of module selects, MCU controls by controlling on lamp group signal that the first LED is the brightest and the second LED Chang Liang；
When according to the MCU control signal received, MCU determines that system side equipment releases the 100G loopback encapsulated based on QSFP28
The sheet choosing of module, and when instruction 100G loopback module based on QSFP28 encapsulation enters low power mode of operation, MCU passes through lamp group
Control signal controls the first LED flicker and the second LED Chang Liang；
When according to the monitoring signal received, MCU determines that the operating temperature of module or voltage is not in default working range,
MCU controls by controlling on lamp group signal that the first LED is the brightest and the second LED flashes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880674A (en) * | 2018-08-28 | 2018-11-23 | 成都新易盛通信技术股份有限公司 | A kind of optical module for local loopback test |
| CN109814045A (en) * | 2017-11-17 | 2019-05-28 | 中兴通讯股份有限公司 | A kind of device and method for testing optical interface |
| WO2022041875A1 (en) * | 2020-08-26 | 2022-03-03 | 华为技术有限公司 | Optical transceiver and optical signal processing method |
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| CN206099982U (en) * | 2016-09-30 | 2017-04-12 | 成都新易盛通信技术股份有限公司 | 100G loopback module based on QSFP28 encapsulation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109814045A (en) * | 2017-11-17 | 2019-05-28 | 中兴通讯股份有限公司 | A kind of device and method for testing optical interface |
| CN108880674A (en) * | 2018-08-28 | 2018-11-23 | 成都新易盛通信技术股份有限公司 | A kind of optical module for local loopback test |
| CN108880674B (en) * | 2018-08-28 | 2023-08-22 | 成都新易盛通信技术股份有限公司 | Optical module for local loop test |
| WO2022041875A1 (en) * | 2020-08-26 | 2022-03-03 | 华为技术有限公司 | Optical transceiver and optical signal processing method |
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Application publication date: 20170104 |