CN112929090A - Optical module and power supply method thereof - Google Patents
Optical module and power supply method thereof Download PDFInfo
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- CN112929090A CN112929090A CN201911242587.6A CN201911242587A CN112929090A CN 112929090 A CN112929090 A CN 112929090A CN 201911242587 A CN201911242587 A CN 201911242587A CN 112929090 A CN112929090 A CN 112929090A
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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 light module controls the output of the control power supply voltage through the control switch in the light module, and before the light 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 power consumption device of the optical module through the first power supply circuit so as to support the whole optical module to operate.
Description
Technical Field
The embodiment of the application relates to the 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 Board (PCB) for photoelectric signal conversion. In the photoelectric signal conversion process, after receiving an optical signal transmitted by an external optical fiber, a receiving part converts the optical signal into an electric signal and transmits the electric signal to an upper computer through a printed circuit board; after receiving the electric signal transmitted by the upper computer, the transmitting part converts the electric signal into an optical signal and emits the optical signal through a corresponding optical fiber.
In the process of the optical module operation, an upper computer generally provides electric energy for the optical module to control the optical module to work. In the process of practical application, a host computer generally controls a plurality of optical modules, but the optical modules on the market are various at present, and it cannot be guaranteed that each optical module connected with the host computer has better compatibility with the host computer.
Some optical module manufacturers also provide some technical measures for protecting the optical module in an encryption manner, 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 and the upper computer have good compatibility, and the upper computer establishes a connection with the optical module to provide electric energy for the optical module and 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 chopped state, the optical module does not have a power supply function, and if no upper computer supplies power to the optical module, the optical module cannot send authentication information of the optical module to the upper computer for identity authentication. Therefore, how to reasonably provide electric energy for the optical module becomes an urgent problem to be solved.
Disclosure of Invention
The embodiment of the application shows an optical module and a power supply method thereof, which are used for solving the technical problems in the prior art.
A first aspect of an embodiment of the present application shows an optical module, including:
a circuit board having a first power supply circuit and a second power supply circuit for transmission of a supply voltage;
a first output pin of the control switch is electrically connected with the input end of the first power supply circuit and used for outputting the received first power supply voltage;
a gold finger connector having a plurality of gold fingers; the input end of the power supply golden finger is electrically connected with an upper computer, and the output end of the power supply golden finger is respectively connected with a switch input pin of the control switch and the input end of the second power supply circuit 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 is electrically connected with the upper computer and used for transmitting authentication information;
a 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 of the communication device is electrically connected with the other end of the communication golden finger and 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 present application shows a light module comprising:
a circuit board having a power supply circuit for transmission of a supply voltage, the power supply circuit including a first power supply circuit and a second power supply circuit;
a first output pin of the control switch is electrically connected with the input end of the first power supply circuit and used for outputting a first power supply voltage; a second output pin of the power supply circuit is electrically connected with the input end of the second power supply circuit and is used for outputting a second power supply voltage;
a gold finger connector having a plurality of gold 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 connected with the switch input pin of the control switch and 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;
a 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 used for receiving the first power supply voltage; the first communication pin of the communication device is electrically connected with the other end of the communication golden finger and 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 for 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 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 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 is in 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 the power supply golden finger of the golden finger connector, and the upper computer outputs the first power supply voltage to the control switch at the moment. The control switch transmits the first power supply voltage to each power consumption 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 in the embodiment of the application, the light module controls the output of the control power supply voltage through the control switch inside the light module, and before the light module passes the authentication, the control switch only outputs the power supply voltage to the micro control chip to support the micro control chip 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, and the control switch transmits the first power supply voltage to each power consumption 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 needed to be used 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a connection relationship of an optical communication terminal;
FIG. 2 is a schematic diagram of an optical network unit;
fig. 3 is a schematic structural diagram of an optical module according to an embodiment of the present invention;
fig. 4 is an exploded schematic view of an optical module structure according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a circuit board provided by an embodiment of the invention;
FIG. 6 is a schematic diagram of a circuit board provided by an embodiment of the present invention;
FIG. 7 is a schematic diagram of a circuit board provided in accordance with yet another embodiment of the present invention;
FIG. 8 is a schematic diagram of a microprocessor according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
One of the core links of optical fiber communication is the interconversion of optical and electrical signals. The optical fiber communication uses optical signals carrying information to transmit in information transmission equipment such as optical fibers/optical waveguides, and the information transmission with low cost and low loss can be realized by using the passive transmission characteristic of light in the optical fibers/optical waveguides; meanwhile, the information processing device such as a computer uses an electric signal, and in order to establish information connection between the information transmission device such as an optical fiber or an optical waveguide and the information processing device such as a computer, it is necessary to perform interconversion between the electric signal and the optical signal.
The optical module realizes the function of interconversion of optical signals and electrical signals in the technical field of optical fiber communication, and the interconversion of the optical signals and the electrical signals 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 the main electrical connection comprises power supply, I2C signals, data signals, grounding and the like; the electrical connection mode realized by the gold finger has become the mainstream connection mode of the optical module industry, and on the basis of the mainstream connection mode, the definition of the pin on the gold finger forms various industry protocols/specifications.
Fig. 1 is a schematic diagram of 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 far-end 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 far-end 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.
An optical port of the optical module 200 is externally accessed to the optical fiber 101, and establishes bidirectional optical signal connection with the optical fiber 101; an electrical port of the optical module 200 is externally connected to the optical network terminal 100, and establishes bidirectional electrical signal connection with the optical network terminal 100; the optical module realizes the interconversion of optical signals and electric signals, thereby realizing the establishment of information connection between the optical fiber and the 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 the mutual conversion of the photoelectric signals, and has no function of processing data, and in the photoelectric conversion process, information only changes in a transmission carrier, and information does not change.
The optical network terminal is provided with an optical module interface 102, which is used for accessing an 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 is connected to the network cable 103 through the optical network terminal 100, specifically, the optical network terminal transmits a signal from the optical module to the network cable and transmits the signal from the network cable to the optical module, and the optical network terminal serves as an upper computer of the optical module to monitor the operation of the optical module. Different from the optical module, the optical network terminal has certain information processing capability.
At this point, a bidirectional signal transmission channel is established between the remote server and the local information processing device 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, provides data signals for the optical module, and receives the data signals from the optical module, and the common upper computer of the optical module also comprises 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 has a circuit board 105, and a cage 106 is disposed on a surface of the circuit board 105; an electric connector is arranged in the cage 106 and used for connecting an electric port of an optical module such as a golden finger; the cage 106 is provided with a heat sink 107, and the heat sink 107 has a projection such as a fin that increases a heat radiation area.
The optical module 200 is inserted into the optical network terminal, specifically, the electrical port of the optical module is inserted into the 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 in the cage; the optical module is inserted into the cage, held by the cage, and the heat generated by the optical module is conducted to the cage 106 and then diffused by the heat sink 107 on the cage.
Fig. 3 is a schematic diagram of an optical module according to an embodiment of the present invention, and fig. 4 is a schematic diagram of an optical module according to an embodiment of the present invention. As shown in fig. 3 and 4, an optical module 200 according to an embodiment of the present invention includes an upper housing 201, a lower housing 202, an unlocking member 203, a circuit board 300, and an optical transceiver 400;
the upper shell 201 is covered on the lower shell 202 to form a wrapping cavity with two openings; the outer contour of the wrapping cavity is generally a square body, and specifically, the lower shell comprises a main plate and two side plates which are positioned at two sides of the main plate and are perpendicular to the main plate; the upper shell comprises a cover plate, and the cover plate covers two side plates of the upper shell to form a wrapping cavity; the upper shell can also comprise two side walls which are positioned at 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 to realize that the upper shell covers the lower shell.
The two openings may be two ends (204, 205) in the same direction, or two openings in different directions; one opening is an electric port 204, and a gold 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 photoelectric devices such as the circuit board 300 and the optical transceiver 400 are positioned in the packaging cavity.
The assembly mode of combining the upper shell and the lower shell is adopted, so that the circuit board 300, the optical transceiver 400 and other devices can be conveniently installed in the shells, and the upper shell and the lower shell form the outermost packaging protection shell of the optical module; the upper shell and the lower shell are made of metal materials generally, so that electromagnetic shielding and heat dissipation are facilitated; generally, the housing of the optical module is not made into an integrated component, so that when devices such as a circuit board and the like are assembled, the positioning component, the heat dissipation component and the electromagnetic shielding component cannot be installed, and the production automation is not facilitated.
The unlocking component 203 is located on the outer wall of the wrapping cavity/lower shell 202, and is used for realizing the fixed connection between the optical module and the upper computer or releasing the fixed connection between the optical module and the upper computer.
The unlocking component 203 is provided with a clamping component matched with the upper computer cage; the end of the unlocking component can be pulled to enable the unlocking component to move relatively 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; by pulling the unlocking component, the clamping component of the unlocking component moves along with the unlocking component, so that the connection relation between the clamping component and the upper computer is changed, the clamping relation between the optical module and the upper computer is released, and the optical module can be drawn out from 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, such as a laser driver chip, a limiting amplifier chip, a clock data recovery CDR, a power management chip, and a data processing chip DSP), and the like.
The circuit board connects the electrical appliances in the optical module together according to the circuit design through circuit wiring to realize the functions of power supply, electrical signal transmission, grounding and the like.
The circuit board is generally a hard circuit board, and the hard circuit board can also realize a bearing effect due to the relatively hard material of the hard circuit board, for example, the hard circuit board can stably bear a chip; when the optical transceiver is positioned on the circuit board, the rigid circuit board can also provide stable bearing; the hard circuit board can also be inserted into an electric connector in the upper computer cage, and specifically, a metal pin/golden finger is formed on the surface of the tail end of one side of the hard circuit board and is used for being connected with the electric connector; these are not easily implemented with flexible circuit boards.
A flexible circuit board is also used in a part of the optical module to supplement a rigid circuit board; the flexible circuit board is generally used in combination with a rigid circuit board, for example, the rigid circuit board may be connected to the optical transceiver device through the flexible circuit board.
The optical transceiver comprises two parts, namely an optical transmitting part and an optical receiving part, which are respectively used for realizing the transmission of optical signals and the reception of the optical signals. The light emitting part and the light receiving part 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 a light receiving and transmitting integrated component.
Fig. 5 is a schematic structural diagram of a circuit board according to an embodiment of the present invention, and fig. 6 is a schematic structural diagram of the circuit board shown in fig. 5. As shown in fig. 5 and 6, the circuit board provided by the embodiment of the present invention is provided with: the 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 electrical appliances in the optical module together according to circuit design so as to realize power supply, electrical signal transmission, grounding and other electrical functions. For the convenience of distinction, the electric appliance is divided into the micro control chip 3 and the electronic element 6, wherein the electronic element 6 is an electric appliance except the micro control chip 3.
The control switch 2 may output the received supply voltage at a corresponding output pin based on a preset communication protocol.
In a feasible embodiment, the switch input pin 21 of the control switch 2 is connected to the power supply golden finger 11, and is configured to receive 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 switch 2 is controlled to output the first supply voltage through the first output pin 22. When the switch input pin 21 receives the second supply voltage, the switch 2 is controlled to output the second supply voltage through the second output pin 23. 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 power utilization device of the optical module and is used for supporting the whole optical module to operate.
The gold finger connector 1(connecting finger) is composed of a plurality of gold-colored conductive contacts, which are called "gold fingers" because the surfaces thereof are plated with gold and the conductive contacts are arranged like fingers, and the gold finger connector 1 provided in the embodiment of the present invention generally includes a plurality of gold fingers, each of which is generally connected to a corresponding interface to perform 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 gold finger can be used for authentication information transmission. It is to be noted that, the present application provides some functions of the gold finger only by way of example, and the corresponding functions of the gold finger may be configured according to specific requirements of the optical module in the actual application process, and the function of each gold finger is not specifically limited in the present application.
In this embodiment, the golden finger connector 1 can be used as a connection medium between the optical module and the upper computer to implement 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 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 gold 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 enable the authentication information to be transmitted between the micro control chip 3 and the upper computer.
In a possible embodiment, the gold finger connector 1 has 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 21 of the control switch 2 and 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 used for transmitting the authentication information stored in the micro control chip.
A Micro Controller Unit (MCU) 3, also called a Single Chip Microcomputer (Single Chip Microcomputer) or a Single Chip Microcomputer (MCU), is to reduce the frequency and specification of a Central Processing Unit (CPU) as appropriate, and integrate peripheral interfaces such as a Memory (Memory), a counter (Timer), a Universal Serial Bus (USB), an Analog signal (a)/Digital signal (D) conversion, a Universal Asynchronous Receiver/Transmitter (UART), a Programmable Logic Controller (PLC), a Direct Memory Access (DMA), etc. on a Single Chip to form a Chip-level computer, which is used for different combined control in different application occasions.
In the present application, the micro control chip 3 stores therein authentication information of the optical module, and the authentication information may be used as an identity of the optical module. In the process of practical application, all information capable of representing the identity of the optical module can be used as authentication information of the optical module. For example, in some feasible embodiments, the authenticated information may be a code that is randomly generated by the optical module during the factory shipment process. When the optical module is shipped from the factory, a pre-generated code is written in a memory area inside the micro control chip 3 through the external I2C bus.
The storage area in which the authentication information is written is not limited in the present application, and all storage areas in which the authentication information can be stored can be used as storage areas in which the authentication information is written. In a preferred embodiment, the authentication information may be written in a false memory of the micro control chip 3, so as to ensure that the authentication information can be still stored in the false memory after the power failure of the optical module. In a preferred embodiment, the authentication information can be written into a read-only memory area of the micro-control chip 3 to ensure that only the authentication information can be read out, but that no modification of the authentication information is possible.
In a feasible real time, the chip power supply pin 31 of the micro control chip 3 is electrically connected to the output terminal of the second power supply circuit 5, and is configured to receive the second power supply voltage; the chip power supply pin 31 is further electrically connected to an output terminal 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.
When the golden finger connector 1 of the optical module is inserted into the upper computer through the connection mode, 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 is in contact with the 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 power consumption device of the optical module so as to support the whole optical module to operate; and if the authentication information does not pass the authentication of the upper computer, the upper computer sends out alarm information.
In addition, the circuit board is also provided with some electric devices except the micro control chip 3, which are referred to as electronic elements 6 in the application, and the electronic elements 6 can be laser driving chips, cross-group amplifying chips, amplitude limiting amplifying chips, clock data recovery CDRs, power management chips and data processing chips DSPs. The supply pin 61 of the electronic component 6 is connected to an output point of the supply circuit for receiving a first supply voltage output by the supply circuit.
In the optical module provided by 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, and 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 under this condition, so that the micro control chip 3 establishes contact 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 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 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 power consumption 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 in the embodiment of the application, the light module controls the output of the control power supply voltage through the control switch 2 inside the light module, and before the light module passes the authentication, the control switch 2 only outputs the power supply voltage to the micro control chip 3 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 operation of the whole optical module.
This completes the description of the present embodiment.
In another possible embodiment, referring to fig. 7, the structure of the circuit board can be seen that: the 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 components may be referred to the above embodiments. The specific connection relationship of each part is as follows:
a circuit board having a supply circuit for the transmission of a supply voltage, the supply circuit comprising a first supply circuit 4 and a second supply circuit 5;
the control switch 2 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 the authentication information of the optical module passes the authentication; after the authentication information of the optical module passes the authentication, the switch input pin and the first output pin are in a communicated state; a first output pin of the power supply circuit is electrically connected with an input end of the first power supply circuit 4 and 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 an 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 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 an 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 used for transmitting the authentication information stored in the micro control chip.
A micro control chip 3, a chip power supply pin 31 of which is electrically connected with an output end of the second power supply circuit 5, and is used for receiving 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 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 host 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, 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 is in contact with the host computer, and at the moment, the micro control chip 3 outputs authentication information to the host computer through the communication golden finger 12 of the golden finger connector 1. 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 first power supply circuit 4 and the second power supply circuit through the 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 whole optical module to operate.
This completes the description of the present embodiment.
In a possible embodiment, the control switch 2 may be a MOS transistor; in the MOS transistor, a first switch pin 21A is electrically connected to one end of the power supply gold finger 11 and is configured to receive a first power supply voltage or a second power supply voltage, and a second switch pin 22A is electrically connected to an input end of the first power supply circuit 4 and is configured to output the first power supply voltage; the control pin 23A is electrically connected to the second communication pin 33 of the micro control chip 3, and is configured to receive a first control signal output by the micro control chip, where the first control signal is used to control the first switch pin to communicate with the second switch pin.
The operation process comprises the following steps: 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, 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 is in contact with the upper computer, and under the condition, 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, 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. After receiving the feedback information, the micro control chip 3 outputs a first control signal through its second communication pin 33. 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 power utilization device of the optical module through the first power supply circuit 4 and the second power supply circuit 5 so as to support the whole optical module to operate.
This completes the description of the present embodiment.
The control switch 2 is a triode;
in a possible embodiment, the control switch 2 may be a transistor, and the transistor may be connected with the circuit board shown in fig. 8. As can be seen from the circuit board shown in fig. 8, the source 21B of the transistor 2 is electrically connected to one end of the power supply gold finger 11 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 to the second communication pin 33 of the micro control chip 3, and is configured to receive a first control signal output by the second communication pin 33 of the micro control chip 3, where the first control signal is used to control the source 21B and the drain 22B of the triode to communicate with each other.
The operation process comprises the following steps: 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, 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 is in contact with the upper computer, and under the condition, 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 receiving 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. After receiving the feedback information, the micro control chip 3 outputs a first control signal through the second communication pin 33. The first control signal is applied to the gate 23B of the transistor to control the source 21B and the 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 power utilization device of the optical module through the first power supply circuit 4 and the second power supply circuit 5 so as to support the whole optical module to operate.
This completes the description of the present embodiment.
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 has more free I/O pins to communicate with the chip bidirectionally.
In a possible embodiment, said first communication pin 32 of the micro control chip 3 is an I/O pin.
The application further 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 is connected 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;
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 to support the whole optical module to operate.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A light module, comprising:
a circuit board having a first power supply circuit and a second power supply circuit for transmission of a supply voltage;
a first output pin of the control switch is electrically connected with an input end of the first power supply circuit and is used for outputting a first power supply voltage, and the first power supply voltage is used for supporting the operation of an optical module; a second output pin of the microcontroller is electrically connected with an input end of the second power supply circuit and used for outputting a second power supply voltage, and the second voltage is used for supporting the operation of the microcontroller chip;
a gold finger connector having a plurality of gold fingers; the input end of the power supply golden finger is electrically connected with an upper computer, and the output end of the power supply golden finger is electrically connected with a switch input pin of the control switch and 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;
a 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 used for receiving the first power supply voltage; the first communication pin of the communication device is electrically connected with the other end of the communication golden finger and 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. A light module, comprising:
a circuit board having a first power supply circuit and a second power supply circuit for transmission of a supply voltage;
the control switch is provided with a switch input pin and a first output pin, and before authentication information of the optical module passes authentication, the switch input pin and the first output pin are in a chopping state; after the authentication information of the optical module passes the authentication, the switch input pin and the first output pin are in a communicated state; the first output pin is electrically connected with the input end of the first power supply circuit and used for outputting a first power supply voltage;
a gold finger connector having a plurality of gold fingers; the input end of the power supply golden finger is electrically connected with an upper computer, and the output end of the power supply golden finger is electrically connected with the switch input pin and the input end of the second power supply circuit respectively 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 is electrically connected with the upper computer and used for transmitting authentication information;
a 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 of the communication device is electrically connected with the other end of the communication golden finger and 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 first switch pin of the MOS tube is electrically connected with the output end of the power supply golden finger and is used for receiving a first power supply voltage or a second power supply voltage; a second switch pin of the first power supply circuit is electrically connected with an input end of the first power supply circuit and is used for outputting the first power supply voltage; the control pin of the micro-control chip is electrically connected with the second communication pin of the micro-control chip and 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. The optical module of 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 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 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 according to any of claims 2-4, characterized in that the first communication pin is an I/O pin.
7. The light module according to any of claims 2-4, characterized in that the authentication information is stored in a read-only memory of the micro control chip.
8. A power supply method for an optical module is characterized by comprising 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;
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 to support the whole optical module to operate.
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