Online transceiver circuit

Abstract

The utility model discloses an on-line transceiver circuit, relates to the related field of optical communication technology, and solves the problems that the existing optical modem is generally large in size and not easy to place; the power consumption is high, the requirement on a power supply interface is high, and the use is inconvenient. The utility model adopts the following scheme that the on-line transceiver circuit comprises a power supply module, a photoelectric conversion circuit, a timing module, a detection module, an Ethernet module and a voltage regulation module. The power supply device is small in size, low in power consumption, convenient to take power, capable of providing power for other equipment and suitable for various use scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communication, and more specifically to a miniature online transceiver. Background Art

[0002] In today's social life. The Internet is closely related to everyone. With the development of network communication technology, PON passive optical network is gradually entering people's field of vision. PON is Passive Optical Network, which is a fiber-based transmission network composed of OLT (Optical Line Terminal), ODN (Optical Distribution Network) and ONU. ONU connects users as a terminal device and realizes data transmission through optical fiber. ONU usually follows the G-PON (Gigabit Passive Optical Network) or XG-PON standards defined by ITU-T. These standards specify the upstream and downstream rates, frame structure, signaling protocols, etc. in the optical network. The online transceiver circuit of the existing technology is applied to high-demand fiber access networks such as fiber to the building, government, and enterprises. It enables customers to quickly introduce the fiber optic network into the cabinet without changing the internal topology of the existing network, and realize the PON fiber optic network upgrade and transformation of the fiber optic network, which has certain significance. Problems facing the current technology:

[0003] Most fiber optic networks have been deployed, but the size of network equipment and customer placement sites always conflict, especially when deploying some large networks, which makes subsequent network maintenance and upgrades very difficult and costly, and is not very friendly to network builders and users. For example:

[0004] 1. Directly use an ordinary fiber optic transceiver, place it on the cabinet, give it factory power, and connect the network cable to the switch port of the local network, which increases the floor space and requires a separate power supply. However, the cabinets of enterprises are often very clean and tidy, and it is impossible to introduce new power sockets.

[0005] 2. Use a fiber optic modem stick, insert it into the fiber optic port of the switch, and use the switch fiber optic port to get power. Since the fiber optic modem stick is very small, the fiber optic modem chip has very high power consumption, and the fiber optic port of the switch itself is designed for high density. Therefore, so far, whether it is a fiber optic modem stick designed by a large manufacturer or a small manufacturer, there will be excessive power consumption and unstable work. In addition, the fiber optic port is very small, making the design more difficult. There are very few solutions suitable for this product on the market.

[0006] 3. Optical modems and routers need to be powered by an additional power supply. Sometimes the interfaces are insufficient, which is inconvenient and will increase costs and energy. Fiber optic transceivers and network cameras need to be powered by an additional power supply, which is inconvenient to use. Utility Model Content

[0007] In view of the deficiencies of the above-mentioned technologies, the utility model proposes a novel online transceiver circuit, which occupies a small area, has low power consumption, is convenient for data information access, and has convenient interface connection, thus greatly improving the online transceiver capability.

[0008] In order to achieve the above effects, the present invention adopts the following technical solutions:

[0009] An online transceiver circuit comprises a power module and a photoelectric conversion circuit connected to an output signal of the power module, a timing module, a detection module, an Ethernet module and a voltage regulation module; the output end of the photoelectric conversion circuit is connected to an input end of the voltage regulation module; the output end of the voltage regulation module is connected to an input end of the Ethernet module; the photoelectric conversion circuit comprises an optical output module and an optical input module; the output end of the timing module is connected to the Ethernet module; and the input end of the detection module is connected to the Ethernet module.

[0010] As a further description of the above technical solution: the input end of the power module is connected to the DC line, and the power module and the DC line female end are connected in parallel to the same DC line male end.

[0011] As a further description of the above technical solution: the DC line is used to input direct current to power the power module through the DC line male connector, and to power external devices through the DC line female connector and the USB interface.

[0012] As a further description of the above technical solution: the photoelectric conversion circuit includes an MDI interface and a serdes interface, the MDI interface and the external network cable transmission signal are interconnected, the Ethernet module realizes the data interconnection between the MDI and serdes interfaces, the serdes and the photoelectric conversion circuit are interconnected, and the photoelectric conversion circuit realizes the conversion of optical signals and electrical signals to realize optical network access.

[0013] As a further description of the above technical solution: the optical input module includes an optical receiver and a cross-group amplifier; the output end of the optical receiver is connected to the input end of the cross-group amplifier; the optical receiver is used in the optical communication system to convert weak optical signals into electrical signals and transmit them to the cross-group amplifier; the cross-group amplifier is used to amplify the electrical signals converted by the optical receiver.

[0014] As a further description of the above technical solution: the optical output module includes an amplifier circuit and a light-emitting element; the output end of the amplifier circuit is connected to the input end of the light-emitting element, and the amplifier circuit is used to amplify weak electrical signals; the light-emitting element is used to convert electrical signals into optical signals.

[0015] As a further description of the above technical solution: the detection module is a circuit based on a light emitting diode and a resistor, the positive electrode of the light emitting diode is connected to the resistor, and the negative electrode is connected to the output end of the Ethernet module;

[0016] As a further description of the above technical solution: the timing module includes a crystal oscillator chip; the timing module is used to output a clock signal.

[0017] As a further description of the above technical solution: the Ethernet module is a single-chip microcomputer circuit based on the RTL8213B chip.

[0018] The utility model comes with a DC male connector and a DC female connector, which can be used to draw power flexibly according to the scenario, and output the power while drawing power. Moreover, it is very mini in size and can be used as an online device. It can be placed anywhere in the cabinet without affecting the layout and appearance of the cabinet. Any transceiver chip solution can be used. The independent heat dissipation design enables it to achieve an industrial-grade working environment. When used with a POE switch, POE can be used to draw power, and at the same time, it has a DC5525 external output interface to provide 12V power to meet the needs of other devices in need. When used with devices such as webcams, the power supply of devices such as webcams can be directly used to power this product, and the DC line of this product can be used to power devices such as webcams. Because the power consumption of this product is particularly small (≤1.5W), there is no need to worry about insufficient power. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the purpose, technical solutions and advantages of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings. It is obvious that the implementation cases described are only part of the embodiments of the utility model, rather than all the embodiments, wherein:

[0020] Figure 1 This is a circuit principle block diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the current transmission structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the data transmission structure of the utility model;

[0023] Figure 4 This is the circuit diagram of the detection module RTL8213B of the utility model;

[0024] Figure 5 This is a schematic diagram of the timing module circuit in the utility model;

[0025] Figure 6 This is a schematic diagram of the photoelectric conversion circuit in the utility model;

[0026] Figure 7 This is a schematic diagram of an embodiment of the light output module and the light input module in the utility model;

[0027] Figure 8 This is a schematic diagram of an embodiment of a voltage regulation module in the utility model;

[0028] In the figure: 1-power module; 2-photoelectric conversion circuit; 3-Ethernet module; 4-voltage regulation module; 5-USB interface; 6-timing module; 7-D line; 8-DC line female head; 9-DC line male head; 10-optical output module; 11-optical input module; 12-detection module. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0030] like Figure 1-Figure 8 As shown, Figure 1 As shown, an online transceiver circuit comprises a power module 1 and a photoelectric conversion circuit 2 connected to the output signal of the power module 1, a timing module 6, a detection module 12, an Ethernet module 3 and a voltage regulation module 4; the output end of the photoelectric conversion circuit 2 is connected to the input end of the voltage regulation module 4; the output end of the voltage regulation module 4 is connected to the input end of the Ethernet module 3; the photoelectric conversion circuit 2 comprises an optical output module 10 and an optical input module 11; the output end of the timing module 6 is connected to the Ethernet module 3; the input end of the detection module 12 is connected to the Ethernet module 3.

[0031] like Figure 2 As shown, in the embodiment of the utility model, the input end of the power module 1 is connected to the DC line 7, and is connected in parallel with the DC line female end 8 to the same DC line male end 9.

[0032] like Figure 4As shown, the power module 1 includes a control chip, an inductor, a diode and a capacitor. The control chip is used to control the current flow direction, the inductor is used to control the current backflow after the switch is turned off, the diode is used to ensure the unidirectional flow of current, and the capacitor is used to remove the ripple voltage to make the voltage in the circuit smoother. The power module inputs current from the DC male plug, and the current flows to the capacitor C1, the capacitor C2 and the control chip pin No. 1 respectively. The current flows out from the capacitor CI, the capacitor C2, the control chip pin No. 5 and the pin No. 3 and then flows to the diode, the capacitor C3, the capacitor C4 and the GND port. The current flowing out from the control chip pin No. 2 and the diode flows to the inductor, and the current flowing out from the control chip pin No. 4, the inductor, the capacitor C3 and the capacitor C4 flows to the output port; the power module 1 is used to power the photoelectric conversion circuit and the Ethernet module. The DC input can directly meet its own work, and the internal DC to 3.3V meets the normal operation of the circuit. At the same time, the DC input voltage is shared with external products through the built-in DC line.

[0033] In the embodiment of the utility model, the DC line 7 is used to input direct current through the DC line male connector 9 to power the power module 1, and to power external devices through the DC line female connector 8 and the USB interface 5.

[0034] In the embodiment of the utility model, the photoelectric conversion circuit 2 realizes the conversion between electrical signals and optical signals through the photoelectric conversion function.

[0035] like Figure 3 As shown, in the embodiment of the utility model, the photoelectric conversion circuit 2 includes an MDI interface and a serdes interface, the MDI interface and the external network cable transmission signal are interconnected, the Ethernet module 3 realizes the data interconnection between the MDI and serdes interfaces, the serdes and the photoelectric conversion circuit 2 are interconnected, and the photoelectric conversion circuit 2 realizes the conversion of optical signals and electrical signals to realize optical network access; the Ethernet module adopts the RTL8213B chip, the optical signal emitted by the optical splitter is accessed by the PON port, the photoelectric conversion circuit 2 converts the optical signal and sends it to the serializer after adjustment by the voltage regulation module 4, and the serializer converts it The signal is sent to the chip RTL8213B, and the chip RTL8213B converts the received signal converted by the serializer into a data signal. Then the chip RTL8213B transmits the converted data signal to the router via the MDI interface using the RJ45 Ethernet interface. At the same time, the RJ45 Ethernet interface sends the data signal from the router to the chip RTL8213B via the MDI interface. The chip RTL8213B sends the received data signal to the photoelectric conversion circuit 2 after voltage adjustment. The photoelectric conversion circuit 2 converts the signal received from the serializer into an optical signal and transmits it to the splitter through the PON port to achieve network access.

[0036] In an embodiment of the utility model, the optical input module 11 includes an optical receiver and a cross-group amplifier; the output end of the optical receiver is connected to the input end of the cross-group amplifier; the optical receiver is used in the optical communication system to convert weak optical signals into electrical signals and transmit them to the cross-group amplifier; the cross-group amplifier is used to amplify the electrical signals converted by the optical receiver.

[0037] In the embodiment of the utility model, the optical output module 10 includes an amplifier circuit and a light-emitting element; the output end of the amplifier circuit is connected to the input end of the light-emitting element, and the amplifier circuit is used to amplify weak electrical signals; the light-emitting element is used to convert electrical signals into optical signals.

[0038] In an embodiment of the utility model, the detection module is a circuit based on a light-emitting diode and a resistor, the positive electrode of the light-emitting diode is connected to the resistor, and the negative electrode is connected to the output end of the Ethernet module; the detection module is used to detect the working condition of the chip RTL8213B.

[0039] In the embodiment of the utility model, the timing module 6 includes a crystal oscillator chip; the timing module is used to send a clock signal to the chip RTL8213B, so that the signals sent by the chip RTL8213B before and after are highly consistent.

[0040] In the utility model, it comes with a DC male and a DC female, which can be flexibly powered according to the scene, and the power can be output externally while being powered. It has only about 2W of power and is very small in size. It can be used as an online device and can be placed anywhere in the cabinet without affecting the layout and appearance of the cabinet. The utility model does not need to be inserted into the optical fiber port, and the heat of the switch is superimposed. The utility model can use any optical fiber cat chip solution, which solves the problem that a new solution is needed for subsequent protocol upgrades. The independent heat dissipation design of the utility model enables it to achieve an industrial-grade working environment. The utility model can use the software design system of the existing optical fiber cat, which can be used as a bridge mode, and can be used in conjunction with the customer's existing 3-layer switch. When the user's existing network is two-layer, the routing mode can also be used to enrich the user's network scenario. When the utility model can be used in conjunction with a router or other device, the power supply of the router or network camera can be directly used to power this product, and the DC line of this product can be used to power the router or network camera at the same time. Because the power consumption of this product is particularly small (≤2.5W), there is no need to worry about insufficient power.

[0041] In a further embodiment, in a gigabit optical-to-electrical converter based on RTL8213B, RTL8213B is a gigabit optical-to-electrical converter of main control + SGMII (1.25Gbps) single-mode single-fiber, four-layer board design, TYPE-c power supply, and support USB power output for easy socketing. RTL8213B-CG is a QFN40 high-performance media converter with low-power integrated single-port function, supporting gigabit physical layers of 1000Base-T, 100Base-TX and 10Base-T. The embedded packet storage SRAM in RTL8213B has excellent memory management technology to effectively utilize memory space. RTL8213B combines a 2048-entry lookup table with a 4-way XOR hash algorithm for address search and learning. The table provides read / write access from an I2C-like serial interface, or from a media independent interface management (MIIM) interface. Each of the entries can be configured as a static entry. The normal entry aging time is between 200 and 400 seconds. 16 filter databases are used to provide independent VLAN learning and shared VLAN learning (IVL / SVL) functions.

[0042] The MRF9511 integrated circuit IC for driving power management, monitoring, conversion and storage has the advantages of small size, light weight, few lead wires and welding points, long life, high reliability, good performance, etc. It is also low in cost and easy to mass produce.

[0043] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these specific embodiments are only examples, and those skilled in the art may omit, replace, and change the details of the above methods and systems without departing from the principles and essence of the present invention. For example, merging the above method steps so as to perform substantially the same functions in substantially the same manner to achieve substantially the same results is within the scope of the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

Claims

1. An online transceiver circuit, characterized in that: The invention comprises a power module (1) and a photoelectric conversion circuit (2) connected to the output signal of the power module (1), a timing module (6), a detection module (12), an Ethernet module (3) and a voltage regulation module (4); the output end of the photoelectric conversion circuit (2) is connected to the input end of the voltage regulation module (4); the output end of the voltage regulation module (4) is connected to the input end of the Ethernet module (3); the photoelectric conversion circuit (2) comprises a light output module (10) and a light input module (11); the output end of the timing module (6) is connected to the Ethernet module (3); the input end of the detection module (12) is connected to the output end of the Ethernet module (3).

2. The in-line transceiver circuit according to claim 1, characterized in that: The input end of the power module (1) is connected to a DC line (7), and the power module (1) and the DC line female end (8) are connected in parallel to the same DC line male end (9).

3. An online transceiver circuit according to claim 2, characterized in that: The DC line (7) is used to input a direct current through the DC line male connector (9) to power the power module (1), and to power an external device through the DC line female connector (8) and the USB interface (5).

4. The in-line transceiver circuit according to claim 1, characterized in that: The photoelectric conversion circuit (2) comprises an MDI interface and a serdes interface, the MDI interface and an external network cable are interconnected for transmitting signals, an Ethernet module (3) receives or sends data information transmitted by the MDI interface and the serdes interface, the serdes interface and the photoelectric conversion circuit (2) are interconnected, and optical signal and electrical signal conversion is achieved via the photoelectric conversion circuit (2), thereby achieving optical network access.

5. The in-line transceiver circuit according to claim 1, characterized in that: The optical input module (11) comprises an optical receiver and a cross-group amplifier; the output end of the optical receiver is connected to the input end of the cross-group amplifier; the optical receiver is used in an optical communication system to convert a weak optical signal into an electrical signal and transmit it to the cross-group amplifier; the cross-group amplifier is used to amplify the electrical signal converted by the optical receiver.

6. The in-line transceiver circuit according to claim 1, characterized in that: The optical output module (10) comprises an amplifier circuit and a light-emitting element; the output end of the amplifier circuit is connected to the input end of the light-emitting element, the amplifier circuit is used to amplify weak electrical signals; and the light-emitting element is used to convert electrical signals into optical signals.

7. The in-line transceiver circuit according to claim 1, characterized in that: The detection module (12) is a circuit based on a light emitting diode and a resistor, wherein the positive electrode of the light emitting diode is connected to the resistor, and the negative electrode is connected to the output end of the Ethernet module (3).

8. The in-line transceiver circuit according to claim 1, characterized in that: The timing module (6) comprises a crystal oscillator chip; the timing module is used to output a clock signal.

9. The in-line transceiver circuit according to claim 1, characterized in that: The detection module (12) is a single-chip microcomputer circuit based on the RTL8213B chip.

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