CN112929090B - Optical module and power supply method thereof - Google Patents
Optical module and power supply method thereof Download PDFInfo
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- CN112929090B CN112929090B CN201911242587.6A CN201911242587A CN112929090B CN 112929090 B CN112929090 B CN 112929090B CN 201911242587 A CN201911242587 A CN 201911242587A CN 112929090 B CN112929090 B CN 112929090B
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- 238000006243 chemical reaction Methods 0.000 description 10
- 230000010365 information processing Effects 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 5
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- 239000010931 gold Substances 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 238000011084 recovery Methods 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
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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
- H04B10/40—Transceivers
Abstract
The application provides an optical module and a power supply method thereof, wherein the optical module comprises: the device comprises a circuit board, a control switch, a golden finger connector and a micro-control chip. The embodiment of the application shows that the optical module controls the output of the control power supply voltage through the control switch in the optical module, and before the optical module passes the authentication, the control switch only outputs the power supply voltage to the micro-control chip so as to support the micro-control chip to send the authentication information stored in the micro-control chip to the upper computer. After the optical module passes the authentication, the upper computer outputs a first power supply voltage to the control switch, and the control switch transmits the first power supply voltage to each electric device of the optical module through the first power supply circuit so as to support the whole optical module to operate.
Description
Technical Field
Embodiments of the present application relate to optical communication technology. And more particularly, to an optical module and a power supply method thereof.
Background
An optical module generally refers to an integrated module for photoelectric conversion, which is generally packaged by a transmitting part, a receiving part and a printed circuit (Printed Circuit Board, PCB) board, for conversion of photoelectric signals. In the photoelectric signal conversion process, after receiving the optical signal transmitted by the external optical fiber, the receiving part converts the optical signal into an electric signal, and then the electric signal is transmitted to the upper computer through the printed circuit board; the transmitting part converts the electric signal into an optical signal after receiving the electric signal transmitted by the upper computer, and then the optical signal is transmitted by the corresponding optical fiber.
In the process of the operation of the optical module, the upper computer generally provides electric energy for the optical module to control the optical module to work. In the practical application process, a plurality of optical modules are usually controlled by an upper computer, but the optical modules on the market are various at present, and the optical modules connected with the upper computer cannot be guaranteed to have better compatibility with the upper computer.
Some optical module manufacturers also put forward some technical measures for encrypting and protecting the optical module, namely, before the upper computer establishes a connection with the optical module, the upper computer authenticates the corresponding optical module, if the authentication is successful, the corresponding optical module has good compatibility with the upper computer, the upper computer establishes a connection with the optical module, and provides electric energy for the optical module to control the optical module to work.
However, before the optical module passes the authentication, the optical module and the upper computer are always in a chopping state, the optical module does not have a power supply function, and if no upper computer provides electric energy for the optical module, the optical module cannot send the authentication information of the optical module to the upper computer for identity authentication. Therefore, how to reasonably provide power for the optical module is a problem to be solved.
Disclosure of Invention
The embodiment of the application discloses an optical module and a power supply method thereof, which aim to solve the technical problems in the prior art.
A first aspect of an embodiment of the present application shows an optical module, including:
the circuit board is provided with a first power supply circuit and a second power supply circuit and is used for transmitting power supply voltage;
the first output pin of the control switch is electrically connected with the input end of the first power supply circuit and is used for outputting the received first power supply voltage;
a golden finger connector having a plurality of golden fingers; the input end of the power supply golden finger is electrically connected with the upper computer, and the output end of the power supply golden finger is respectively connected with the switch input pin of the control switch and the input end of the second power supply circuit, and is used for transmitting the first power supply voltage or the second power supply voltage output by the upper computer; one end of the communication golden finger is electrically connected with the upper computer and used for transmitting authentication information;
the chip power supply pin of the micro control chip is electrically connected with the output end of the first power supply circuit and is used for receiving the first power supply voltage or the second power supply voltage; the first communication pin is electrically connected with the other end of the communication golden finger and is used for outputting authentication information so that the upper computer authenticates the authentication information, and when the authentication information passes the authentication, the upper computer outputs a first power supply voltage.
A second aspect of the application shows an optical module comprising:
the circuit board is provided with a power supply circuit for transmitting power supply voltage, and the power supply circuit comprises a first power supply circuit and a second power supply circuit;
the first output pin of the control switch is electrically connected with the input end of the first power supply circuit and is used for outputting a first power supply voltage; the second output pin is electrically connected with the input end of the second power supply circuit and is used for outputting a second power supply voltage;
a golden finger connector having a plurality of golden fingers; the input end of the power supply golden finger is electrically connected with the upper computer, the output end of the power supply golden finger is connected with a switch input pin of the control switch, and the power supply golden finger is used for transmitting a first power supply voltage or a second power supply voltage output by the upper computer; one end of the communication golden finger is electrically connected with the upper computer and used for transmitting authentication information;
the chip power supply pin of the micro control chip is electrically connected with the output end of the second power supply circuit and is used for receiving the second power supply voltage; the chip power supply pin is also electrically connected with the output end of the first power supply circuit and is used for receiving the first power supply voltage; the first communication pin is electrically connected with the other end of the communication golden finger and is used for outputting authentication information so that the upper computer authenticates the authentication information, and when the authentication information passes the authentication, the upper computer outputs a first power supply voltage.
A third aspect of the present application shows a power supply method of an optical module, including:
when the optical module is inserted into the upper computer through the golden finger connector, the upper computer outputs a second power supply voltage, and the second power supply voltage acts on the micro control chip in the optical module to support the micro control chip to operate;
the micro control chip outputs authentication information to the upper computer so that the upper computer authenticates the authentication information;
and if the authentication information passes the authentication, the optical module receives a first power supply voltage output by the upper computer, and the first power supply voltage acts on each electric device in the optical module so as to support the whole optical module to operate.
The application provides an optical module and a power supply method thereof, wherein the optical module comprises: the device comprises a circuit board, a control switch, a golden finger connector and a micro-control chip. When the golden finger connector of the optical module is inserted into the upper computer, the upper computer outputs a second power supply voltage to the control switch through the power supply golden finger of the golden finger connector, at the moment, the second output pin of the control switch outputs the second power supply voltage to the micro-control chip through the second power supply circuit, so that the micro-control chip establishes contact with the upper computer, and at the moment, the micro-control chip outputs authentication information to the upper computer through the communication golden finger of the golden finger connector. And after receiving the authentication information, the upper computer authenticates the authentication information. If the authentication information passes the authentication of the upper computer, the upper computer outputs a first power supply voltage to the control switch through a power supply golden finger of the golden finger connector, and at the moment, the upper computer outputs the first power supply voltage to the control switch. The control switch transmits the first power supply voltage to each electric device of the optical module through the first power supply circuit so as to support the whole optical module to operate. It can be seen that the embodiment of the application shows that the optical module controls the output of the control power supply voltage through the control switch in the optical module, and before the optical module passes the authentication, the control switch only outputs the power supply voltage to the micro-control chip so as to support the micro-control chip to send the authentication information stored in the optical module to the upper computer. After the optical module passes the authentication, the upper computer outputs a first power supply voltage to the control switch, and the control switch transmits the first power supply voltage to each electric device of the optical module through the first power supply circuit so as to support the whole optical module to operate.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the connection relationship of an optical communication terminal;
fig. 2 is a schematic diagram of an optical network unit structure;
fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present application;
fig. 4 is an exploded schematic view of an optical module according to an embodiment of the present application;
fig. 5 is a schematic diagram of a circuit board according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a circuit board provided by an embodiment of the present application;
FIG. 7 is a schematic diagram of a circuit board according to yet another embodiment of the present application;
FIG. 8 is a schematic diagram of a microprocessor according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
One of the key links of optical fiber communication is the mutual conversion of optical signals and electric signals. The optical fiber communication uses the optical signal carrying information to transmit in the information transmission equipment such as optical fiber/optical waveguide, and the information transmission with low cost and low loss can be realized by utilizing the passive transmission characteristic of the light in the optical fiber/optical waveguide; in order to establish an information connection between an information transmission device such as an optical fiber and an information processing device such as a computer, it is necessary to perform interconversion between an electric signal and an optical signal.
The optical module realizes the function of the mutual conversion of the optical signal and the electric signal in the technical field of optical fiber communication, and the mutual conversion of the optical signal and the electric signal is the core function of the optical module. The optical module is electrically connected with an external upper computer through a golden finger on an internal circuit board of the optical module, and main electrical connection comprises power supply, I2C signals, data signals, grounding and the like; the electrical connection mode realized by the golden finger has become the mainstream connection mode of the optical module industry, and on the basis of the main connection mode, the definition of pins on the golden finger forms various industry protocols/specifications.
Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal. As shown in fig. 1, the connection of the optical communication terminal mainly includes the interconnection among the optical network terminal 100, the optical module 200, the optical fiber 101 and the network cable 103;
one end of the optical fiber 101 is connected with a remote server, one end of the network cable 103 is connected with local information processing equipment, and the connection between the local information processing equipment and the remote server is completed by the connection between the optical fiber 101 and the network cable 103; and the connection between the optical fiber 101 and the network cable 103 is made by the optical network terminal 100 having the optical module 200.
The optical port of the optical module 200 is externally connected to the optical fiber 101, and bidirectional optical signal connection is established with the optical fiber 101; the electrical port of the optical module 200 is externally connected into the optical network terminal 100, and bidirectional electrical signal connection is established with the optical network terminal 100; the method comprises the steps that the mutual conversion of optical signals and electric signals is realized in an optical module, so that information connection is established between an optical fiber and an optical network terminal; specifically, the optical signal from the optical fiber is converted into an electrical signal by the optical module and then input to the optical network terminal 100, and the electrical signal from the optical network terminal 100 is converted into an optical signal by the optical module and input to the optical fiber. The optical module 200 is a tool for realizing photoelectric signal conversion, and has no function of processing data, and in the photoelectric conversion process, only the transmission carrier changes the information, and the information does not change.
The optical network terminal is provided with an optical module interface 102, which is used for accessing the optical module 200 and establishing bidirectional electric signal connection with the optical module 200; the optical network terminal is provided with a network cable interface 104 which is used for accessing the network cable 103 and establishing bidirectional electric signal connection with the network cable 103; the optical module 200 and the network cable 103 are connected through the optical network terminal 100, specifically, the optical network terminal transmits signals from the optical module to the network cable, and transmits signals from the network cable to the optical module, and the optical network terminal is used as an upper computer of the optical module to monitor the operation of the optical module. Unlike optical modules, optical network terminals have a certain information processing capability.
So far, the remote server establishes a bidirectional signal transmission channel with the local information processing equipment through the optical fiber, the optical module, the optical network terminal and the network cable.
Common information processing apparatuses include routers, switches, electronic computers, and the like; the optical network terminal is an upper computer of the optical module, which provides data signals for the optical module and receives data signals from the optical module, and the common optical module upper computer also includes an optical line terminal and the like.
Fig. 2 is a schematic diagram of an optical network terminal structure. As shown in fig. 2, the optical network terminal 100 includes a circuit board 105, and a cage 106 is provided on a surface of the circuit board 105; an electrical connector is arranged in the cage 106 and is used for accessing an optical module electrical port such as a golden finger; the cage 106 is provided with a radiator 107, and the radiator 107 has a convex portion such as a fin that increases a heat radiation area.
The optical module 200 is inserted into an optical network terminal, specifically, an electrical port of the optical module is inserted into an electrical connector inside the cage 106, and the optical port of the optical module is connected to the optical fiber 101.
The cage 106 is positioned on the circuit board, and the electrical connector on the circuit board is wrapped in the cage, so that the electrical connector is arranged inside the cage; the light module is inserted into the cage, the light module is fixed by the cage, and the heat generated by the light module is conducted to the cage 106 and then diffused through the heat sink 107 on the cage.
Fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present application, and fig. 4 is an exploded structural diagram of an optical module according to an embodiment of the present application. As shown in fig. 3 and 4, the optical module 200 provided in the embodiment of the present application includes an upper housing 201, a lower housing 202, an unlocking component 203, a circuit board 300, and an optical transceiver 400;
the upper case 201 is covered on the lower case 202 to form a packing cavity having two openings; the outer contour of the wrapping cavity is generally square, and specifically, the lower shell comprises a main board and two side boards which are positioned on two sides of the main board and are perpendicular to the main board; the upper shell comprises a cover plate, and the cover plate covers the two side plates of the upper shell to form a wrapping cavity; the upper shell can further comprise two side walls which are positioned on two sides of the cover plate and are perpendicular to the cover plate, and the two side walls are combined with the two side plates so as to realize that the upper shell covers the lower shell.
The two openings can be two ends openings (204, 205) in the same direction or two openings in different directions; one opening is an electric port 204, and a golden finger of the circuit board extends out of the electric port 204 and is inserted into an upper computer such as an optical network terminal; the other opening is an optical port 205 for external optical fiber access to connect with the optical transceiver 400 inside the optical module; the circuit board 300, the optical transceiver 400, and other optoelectronic devices are located in the encapsulation cavity.
The upper shell and the lower shell are combined to be assembled, so that devices such as the circuit board 300, the optical transceiver 400 and the like can be conveniently installed in the shells, and the upper shell and the lower shell form an encapsulation protection shell of the outermost layer of the optical module; the upper shell and the lower shell are generally made of metal materials, so that electromagnetic shielding and heat dissipation are facilitated; the housing of the optical module is not generally made into an integral part, so that the positioning part, the heat dissipation part and the electromagnetic shielding part cannot be installed when devices such as a circuit board are assembled, and the production automation is not facilitated.
The unlocking component 203 is located on the outer wall of the lower housing 202, and is used for realizing or releasing the fixed connection between the optical module and the host computer.
The unlocking part 203 is provided with a clamping part matched with the upper computer cage; pulling the end of the unlocking member can relatively move the unlocking member on the surface of the outer wall; the optical module is inserted into a cage of the upper computer, and the optical module is fixed in the cage of the upper computer by a clamping component of the unlocking component; the unlocking part is pulled, and the clamping part of the unlocking part moves along with the unlocking part, so that the connection relation between the clamping part and the upper computer is changed, the clamping relation between the optical module and the upper computer is relieved, and the optical module can be pulled out of the cage of the upper computer.
The circuit board 300 is provided with circuit traces, electronic components (such as capacitors, resistors, triodes, MOS transistors and chips, for example, a laser driving chip, a limiting amplifying chip, a clock data recovery CDR, a power management chip, a data processing chip DSP), and the like.
The circuit board connects the electric devices in the optical module together according to the circuit design through the circuit wiring so as to realize the electric functions of power supply, electric signal transmission, grounding and the like.
The circuit board is generally a hard circuit board, and the hard circuit board can also realize bearing effect due to the relatively hard material of the hard circuit board, for example, the hard circuit board can stably bear chips; when the optical transceiver is positioned on the circuit board, the hard circuit board can provide stable bearing; the hard circuit board can also be inserted into an electric connector in the upper computer cage, specifically, a metal pin/golden finger is formed on the surface of one side tail end of the hard circuit board and is used for being connected with the electric connector; these are all inconvenient to implement with flexible circuit boards.
A flexible circuit board is also used in part of the optical modules and is used as a supplement of the hard circuit board; the flexible circuit board is generally used in cooperation with the hard circuit board, for example, the hard circuit board and the optical transceiver can be connected by using the flexible circuit board.
The optical transceiver comprises an optical transmitting component and an optical receiving component, which are respectively used for realizing the transmission of optical signals and the reception of the optical signals. The light emitting member and the light receiving member may be combined together or may be independent of each other.
The light emitting component and the light receiving component provided by the embodiment of the application are combined together to form an optical transceiver integrated component.
Fig. 5 is a schematic structural diagram of a circuit board according to an embodiment of the present application, and fig. 6 is a schematic structural diagram of the circuit board shown in fig. 5. As shown in fig. 5 and fig. 6, the circuit board provided in the embodiment of the present application is provided with: the electronic device comprises a golden finger connector 1, a control switch 2, a micro control chip 3, a first power supply circuit 4, a second power supply circuit 5 and an electronic element 6.
In the application, the first power supply circuit 4 and the second power supply circuit 5 are used for connecting the electric devices in the optical module together according to the circuit design so as to realize the electric functions of power supply, electric signal transmission, grounding and the like. For convenience of distinction, the present application divides the electric devices into the micro control chip 3 and the electronic component 6, wherein the electronic component 6 is an electric device other than the micro control chip 3.
The control switch 2 can output the received power supply voltage at a corresponding output pin based on a preset communication protocol.
In a feasible embodiment, the switch 2 is controlled, and the switch input pin 21 of the switch 2 is connected with the power supply golden finger 11 and is used for receiving the first power supply voltage or the second power supply voltage output by the upper computer through the power supply golden finger. When the switch input pin 21 receives the first supply voltage, the control switch 2 outputs the first supply voltage through the first output pin 22. When the switch input pin 21 receives the second supply voltage, the control switch 2 outputs the second supply voltage through the second output pin 23. Wherein the second power supply voltage acts on the micro control chip 3 and is used for supporting the micro control chip 3 to operate. The first power supply voltage acts on each electric device of the optical module and is used for supporting the whole optical module to operate.
The golden finger connector 1 (connecting finger) is composed of a plurality of golden conductive contacts, and is called a golden finger because the surface of the golden finger connector is gold-plated and the conductive contacts are arranged like fingers, so that the golden finger connector 1 provided in the embodiment of the application generally comprises a plurality of golden fingers, and each golden finger is generally connected to a corresponding interface to realize a corresponding function. For example: the power supply golden finger in the embodiment of the application can be used for transmitting power supply voltage; the communication golden finger can be used for transmitting authentication information. It should be noted that the present application is only exemplary to provide some functions of the gold fingers, and the corresponding functions of the gold fingers can be configured according to the specific requirements of the optical module in the practical application process, and the present application is not limited to the specific functions of each gold finger.
In the embodiment of the application, the golden finger connector 1 can be used as a connecting medium of the optical module and the upper computer to realize the transmission of power supply voltage, signals and instructions between the optical module and the upper computer. For example, in some embodiments, the input end of the power supply golden finger 11 is electrically connected with the upper computer, and the output end of the power supply golden finger is electrically connected with the input end of the power supply circuit, so as to realize the transmission of the power supply voltage between the upper computer and the power supply circuit. For another example, in some embodiments, one end of the communication golden finger 12 is electrically connected to the upper computer, and the other end is electrically connected to the first communication pin of the micro-control chip 3, so as to realize the transmission of authentication information between the micro-control chip 3 and the upper computer.
In one possible embodiment, the golden finger connector 1 has a plurality of golden fingers; the input end of the power supply golden finger 11 is electrically connected with the upper computer, the output end of the power supply golden finger is connected with a switch input pin 21 of the control switch 2, and the power supply golden finger is used for transmitting a first power supply voltage or a second power supply voltage output by the upper computer; one end of the communication golden finger 12 is electrically connected with the upper computer, and the other end is electrically connected with a first communication pin of the micro-control chip, and is used for transmitting authentication information stored in the micro-control chip.
The micro control chip 3 (Microcontroller Unit, MCU) 3, also called as a single chip microcomputer (Single Chip Microcomputer) or a single chip microcomputer, is to properly reduce the frequency and specification of a central processing unit (Central Process Unit, CPU), and integrate peripheral interfaces such as a memory (memory), a counter (Timer), a universal serial bus (Universal Serial Bus, USB), analog (A)/Digital (D) conversion, a universal asynchronous transceiver (Universal Asynchronous Receiver/Transmitter, UART), a programmable logic controller (Programmable Logic Controller, PLC), direct memory access (Direct Memory Access, DMA) and the like on a single chip to form a chip-level computer for different application occasions to perform different combination control.
In the application, the micro control chip 3 stores the authentication information of the optical module, and the authentication information can be used as the identity of the optical module. In the practical application process, all the information which can represent the identity of the optical module can be used as the authentication information of the optical module. For example, in some viable embodiments the authenticated information may be a randomly generated code of the optical module during shipment. When the optical module leaves the factory, a pre-generated code is written into a memory area inside the micro control chip 3 through an external I2C bus.
The application does not limit the storage area for writing the authentication information, and all the storage areas capable of storing the authentication information can be used as the storage area for writing the authentication information. In a preferred embodiment, the authentication information may be written into the false memory of the micro control chip 3, so as to ensure that the authentication information can still be stored in the false memory after the optical module is powered down. In a preferred embodiment, the authentication information may be written in a read-only memory area of the micro control chip 3 to ensure that only the authentication information can be read out, and that no modification of the authentication information is possible.
In a feasibility real-time, the chip power supply pin 31 of the micro control chip 3 is electrically connected with the output end of the second power supply circuit 5 and is used for receiving the second power supply voltage; the chip power supply pin 31 is further electrically connected to an output end of the first power supply circuit 4, and is configured to receive the first power supply voltage; the first communication pin 32 of the micro control chip 3 is electrically connected with the other end of the communication golden finger 12 and is used for outputting authentication information, so that the upper computer authenticates the authentication information, and when the authentication information passes the authentication, the upper computer outputs a first power supply voltage.
By the connection mode, when the golden finger connector 1 of the optical module is inserted into the upper computer, the upper computer outputs a second power supply voltage to the control switch 2 through the power supply golden finger 11 of the golden finger connector 1. The second output pin of the control switch 2 outputs a second power supply voltage to the micro control chip 3 through the second power supply circuit 5, so that the micro control chip 3 establishes a connection with an upper computer. The micro control chip 3 outputs authentication information to the upper computer through the communication golden finger 12 of the golden finger connector 1. And after receiving the authentication information, the upper computer authenticates the authentication information. If the authentication information passes the authentication of the upper computer, the control switch 2 outputs a first power supply voltage to the first power supply circuit 4, and the first power supply circuit 4 outputs the first power supply voltage to each electric device of the optical module so as to support the operation of the whole optical module; if the authentication information does not pass the authentication of the upper computer, the upper computer sends out alarm information.
In addition, some electric devices except the micro control chip 3 are also arranged on the circuit board, which is called an electronic element 6 in the application, and the electronic element 6 can be a laser driving chip, a cross-group amplifying chip, a limiting amplifying chip, a clock data recovery CDR, a power management chip and a data processing chip DSP. The power supply pin 61 of the electronic component 6 is connected to an output point of the power supply circuit for receiving the first power supply voltage output by the power supply circuit.
In the optical module provided in this embodiment, the upper computer outputs the second power supply voltage to the control switch 2 through the power supply golden finger 11 of the golden finger connector 1, in this case, the second output pin of the control switch 2 outputs the second power supply voltage to the micro-control chip 3 through the second power supply circuit 5, so that the micro-control chip 3 establishes a connection with the upper computer, and the micro-control chip 3 can output authentication information to the upper computer through the communication golden finger 12 of the golden finger connector 1. After the upper computer receives the authentication information, the upper computer authenticates the authentication information, if the authentication information passes through the authentication of the upper computer, the upper computer outputs a first power supply voltage to the control switch 2 through the power supply golden finger 11 of the golden finger connector 1, and at the moment, the control switch 2 transmits the first power supply voltage to each electric appliance of the optical module through the first power supply circuit so as to support the whole optical module to operate. It can be seen that the embodiment of the present application shows that the optical module controls the output of the control supply voltage through the control switch 2 inside the optical module, and before the optical module passes the authentication, the control switch 2 only outputs the supply voltage to the micro control chip 3, so as to support the micro control chip 3 to send the authentication information stored inside to the upper computer. After the optical module passes the authentication, the upper computer outputs a first power supply voltage to the control switch 2, and the control switch 2 transmits the first power supply voltage to each electric device of the optical module through the first power supply circuit so as to support the whole optical module to operate.
The description of the embodiment is thus completed.
In another possible embodiment, the structure of the circuit board may be referred to as fig. 7, and it can be seen that the circuit board is provided with: the electronic device comprises a golden finger connector 1, a control switch 2, a micro control chip 3, a first power supply circuit 4, a second power supply circuit 5 and an electronic element 6. In this embodiment, the functions of the respective components can be referred to the above-described embodiments. The specific connection relation of the components is as follows:
a circuit board having a power supply circuit for transmission of a power supply voltage, the power supply circuit including a first power supply circuit 4 and a second power supply circuit 5;
a control switch 2 having a switch input pin and a first output pin, the switch input pin and the first output pin being in a chopping state before authentication information of the optical module passes authentication; the switch input pin and the first output pin are in a communication state after the authentication information of the optical module passes the authentication; a first output pin of the first power supply circuit is electrically connected with an input end of the first power supply circuit 4 and is used for outputting the first power supply voltage;
a gold finger connector 1 having a plurality of gold fingers; the input end of the power supply golden finger 11 is electrically connected with the upper computer, and the output end of the power supply golden finger is connected with a switch input pin of the control switch 2 and is used for transmitting a first power supply voltage or a second power supply voltage output by the upper computer; the output end of the power supply golden finger 11 is also electrically connected with the input end of the second power supply circuit 5 and is used for transmitting a first power supply voltage or a second power supply voltage output by the upper computer; one end of the communication golden finger 12 is electrically connected with the upper computer, and the other end is electrically connected with a first communication pin of the micro-control chip, and is used for transmitting authentication information stored in the micro-control chip.
A micro control chip 3, whose chip power supply pin 31 is electrically connected to the output end of the second power supply circuit 5, and is configured to receive the first power supply voltage or the second power supply voltage; the first communication pin 32 is electrically connected with the other end of the communication golden finger 12 and is used for outputting authentication information so that the upper computer authenticates the authentication information, and when the authentication information passes the authentication, the upper computer outputs a first power supply voltage.
The specific power supply process is as follows: the upper computer outputs a second power supply voltage to the input end of the second power supply circuit 5 through the power supply golden finger 11 of the golden finger connector 1, and the output end of the second power supply circuit 5 outputs the second power supply voltage to the micro control chip 3, so that the micro control chip 3 establishes a connection with the upper computer, and at the moment, the micro control chip 3 outputs authentication information to the upper computer through the communication golden finger 12 of the golden finger connector 1. After the upper computer receives the authentication information, the upper computer authenticates the authentication information, if the authentication information passes through the authentication of the upper computer, the upper computer outputs a first power supply voltage to be controlled to a first power supply circuit 4 and a second power supply circuit through a power supply golden finger 11 of the golden finger connector 1, and the first power supply circuit 4 and the second power supply circuit 5 transmit the first power supply voltage to each electric device of the optical module so as to support the operation of the whole optical module.
Thus, the description of the present embodiment is completed.
In a feasible embodiment, the control switch 2 may be a MOS transistor; the MOS tube, the first switch pin 21A is electrically connected with one end of the power supply golden finger 11, for receiving the first power supply voltage or the second power supply voltage, and the second switch pin 22A is electrically connected with the input end of the first power supply circuit 4, for outputting the first power supply voltage; the control pin 23A is electrically connected with the second communication pin 33 of the micro control chip 3, and is used for receiving a first control signal output by the micro control chip, where the first control signal is used for controlling the first switch pin to be communicated with the second switch pin.
The operation process is as follows: when the optical module is inserted into the upper computer through the golden finger connector 1, the upper computer outputs a second power supply voltage to the input end of the second power supply circuit 5 through the power supply golden finger 11, and the output end of the second power supply circuit 5 outputs the second power supply voltage to the micro control chip 3, so that the micro control chip 3 establishes a connection with the upper computer, and in this case, the micro control chip 3 outputs authentication information to the upper computer through the communication golden finger 12 of the golden finger connector 1. After the upper computer receives the authentication information, the upper computer authenticates the authentication information, and if the authentication information passes the authentication of the upper computer, the upper computer outputs feedback information to the micro-control chip 3 through the communication golden finger 12 of the golden finger connector 1. The micro control chip 3 outputs a first control signal through its second communication pin 33 after receiving the feedback information. The first control signal acts on the control pin 23A of the MOS transistor to control the first switch pin 21A of the MOS transistor to communicate with the second switch pin 22A. Meanwhile, the upper computer outputs a first power supply voltage through the power supply golden finger 11, and the first power supply can be output to each electric device of the optical module through the first power supply circuit 4 and the second power supply circuit 5 so as to support the operation of the whole optical module.
Thus, the description of the present embodiment is completed.
The control switch 2 is a triode;
in a possible embodiment, the control switch 2 may be a transistor, and the connection relationship of the transistor may refer to the circuit board shown in fig. 8. As can be seen from the circuit board shown in fig. 8, the source 21B of the triode 2 is electrically connected to one end of the power supply golden finger 11, and is used for receiving a first power supply voltage; the drain 22B is electrically connected to the input terminal of the first power supply circuit 4, and is configured to output the first power supply voltage; the gate 23B of the triode 2 is electrically connected with the second communication pin 33 of the micro control chip 3, and is used for receiving a first control signal output by the second communication pin 33 of the micro control chip 3, where the first control signal is used for controlling the source 21B and the drain 22B of the triode to be communicated.
The operation process is as follows: when the optical module is inserted into the upper computer through the golden finger connector 1, the upper computer outputs a second power supply voltage to the input end of the second power supply circuit 5 through the power supply golden finger 11, and the output end of the second power supply circuit 5 outputs the second power supply voltage to the micro control chip 3, so that the micro control chip 3 establishes a connection with the upper computer, and in this case, the micro control chip 3 outputs authentication information to the upper computer through the communication golden finger 12 of the golden finger connector 1. After the upper computer receives the authentication information, the upper computer authenticates the authentication information, and if the authentication information passes the authentication of the upper computer, the upper computer outputs feedback information to the micro-control chip 3 through the communication golden finger 12. The micro control chip 3 outputs the first control signal through the second communication pin 33 after receiving the feedback information. The first control signal is applied to the gate 23B of the transistor to control the source 21B and drain 22B of the transistor to communicate. Meanwhile, the upper computer outputs a first power supply voltage through the power supply golden finger 11, and the second power supply can be output to each electric device of the optical module through the first power supply circuit 4 and the second power supply circuit 5 so as to support the operation of the whole optical module.
Thus, the description of the present embodiment is completed.
In a possible embodiment, the second communication pin 33 of the micro control chip 3 is an output pin, so that the micro control chip 3 is free to more I/O pins for bi-directional communication with the chip.
In a possible embodiment, the first communication pin 32 of the micro control chip 3 is an I/O pin.
The application also provides a power supply method of the optical module, which comprises the following steps:
when the optical module is inserted into the upper computer through the golden finger connector, the upper computer outputs a second power supply voltage, and the second power supply voltage acts on the micro control chip in the optical module to support the micro control chip to operate. Under the condition, the micro control chip establishes a connection with the upper computer, and the micro control chip outputs authentication information to the upper computer so that the upper computer authenticates the authentication information;
and if the authentication information passes the authentication, the optical module receives a first power supply voltage output by the upper computer, and the first power supply voltage acts on each electric device in the optical module so as to support the whole optical module to operate.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (8)
1. An optical module, comprising:
the circuit board is provided with a first power supply circuit and a second power supply circuit and is used for transmitting power supply voltage;
the first output pin of the control switch is electrically connected with the input end of the first power supply circuit and is used for outputting a first power supply voltage which is used for supporting the operation of the optical module; the second output pin is electrically connected with the input end of the second power supply circuit and is used for outputting a second power supply voltage which is used for supporting the micro-control chip to operate;
a golden finger connector having a plurality of golden fingers; the power supply golden finger is electrically connected with the upper computer through the input end, and the output end is electrically connected with the switch input pin of the control switch and is used for transmitting the first power supply voltage or the second power supply voltage output by the upper computer; one end of the communication golden finger is electrically connected with the upper computer and used for transmitting authentication information;
the chip power supply pin of the micro control chip is electrically connected with the output end of the second power supply circuit and is used for receiving the second power supply voltage; the chip power supply pin is also electrically connected with the output end of the first power supply circuit and is used for receiving the first power supply voltage; the first communication pin is electrically connected with the other end of the communication golden finger and is used for outputting authentication information so that the upper computer authenticates the authentication information, and when the authentication information passes the authentication, the upper computer outputs a first power supply voltage.
2. An optical module, comprising:
the circuit board is provided with a first power supply circuit and a second power supply circuit and is used for transmitting power supply voltage;
the control switch is provided with a switch input pin and a first output pin, and the switch input pin and the first output pin are in a chopping state before authentication information of the optical module passes authentication; the switch input pin and the first output pin are in a communication state after the authentication information of the optical module passes the authentication; the first output pin is electrically connected with the input end of the first power supply circuit and is used for outputting a first power supply voltage;
a golden finger connector having a plurality of golden fingers; the input end of the power supply golden finger is electrically connected with the upper computer, and the output end of the power supply golden finger is electrically connected with the input pin of the switch and the input end of the second power supply circuit respectively and used for transmitting the first power supply voltage or the second power supply voltage output by the upper computer; one end of the communication golden finger is electrically connected with the upper computer and used for transmitting authentication information;
the chip power supply pin of the micro control chip is electrically connected with the output end of the second power supply circuit and is used for receiving the first power supply voltage or the second power supply voltage; the first communication pin is electrically connected with the other end of the communication golden finger and is used for outputting authentication information so that the upper computer authenticates the authentication information, and when the authentication information passes the authentication, the upper computer outputs a first power supply voltage.
3. The optical module of claim 2, wherein the control switch is a MOS transistor;
the MOS tube is electrically connected with the output end of the power supply golden finger through a first switch pin and is used for receiving a first power supply voltage or a second power supply voltage; the second switch pin is electrically connected with the input end of the first power supply circuit and is used for outputting the first power supply voltage; the control pin is electrically connected with the second communication pin of the micro control chip and is used for receiving a first control signal output by the micro control chip, and the first control signal is used for controlling the first switch pin to be communicated with the second switch pin.
4. A light module as recited in claim 3, wherein the control switch is a triode;
the source electrode of the triode is electrically connected with the output end of the power supply golden finger and is used for receiving a first power supply voltage; the drain electrode of the first power supply circuit is electrically connected with the input end of the first power supply circuit and is used for outputting the first power supply voltage; the grid electrode of the micro-control chip is electrically connected with a second communication pin of the micro-control chip and is used for receiving a first control signal output by the micro-control chip, and the first control signal is used for controlling the grid electrode to be communicated with the drain electrode.
5. The light module of claim 3 or 4, wherein the second communication pin is an output pin.
6. The optical module of any one of claims 2-4, wherein the first communication pin is an I/O pin.
7. The optical module of any one of claims 2-4, wherein the authentication information is stored in a read-only memory of the micro-control chip.
8. A method of powering an optical module, comprising:
when the optical module is inserted into the upper computer through the golden finger connector, the upper computer outputs a second power supply voltage, and the second power supply voltage acts on the micro control chip in the optical module to support the micro control chip to operate;
the micro control chip outputs authentication information to the upper computer so that the upper computer authenticates the authentication information;
and if the authentication information passes the authentication, the optical module receives a first power supply voltage output by the upper computer, and the first power supply voltage acts on each electric device in the optical module so as to support the whole optical module to operate.
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