Mode switching circuit and electronic equipment

Abstract

The utility model relates to the technical field of optical fiber communication, in particular to a mode switching circuit and electronic equipment. Comprising a control module used for obtaining a switching instruction signal and generating a corresponding mode switching signal according to the switching instruction signal; the switching module is used for adjusting the internal signal state of the switching module according to the mode switching signal so as to switch a signal input source; and the switching module is also used for adjusting the data transmission rate of the switching module so as to adapt to the switched signal input source, thereby realizing the mode switching of the OLT. The compatibility problem of the GPON and the XGS PON on the same OLT is solved, a user can freely select a conventional GPON OLT module or an XGS PON (or XG PON) OLT module under the condition that the OLT is not replaced, and then the beneficial effect of improving user experience is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of optical fiber communications, and in particular to a mode switching circuit and electronic equipment. Background Art

[0002] Combo PON OLT (Combined Passive Optical Network Optical Line Terminal) is a fiber-optic access technology that supports the coexistence and upgrade of multiple generations of PON technology, enabling efficient network upgrades and bandwidth increases. In the currently commonly used combo PON OLT, the downlink combo PON interface requires a dedicated combo PON OLT module. This module combines optoelectronic components such as the 1577nm laser and 1270nm detector used in 10G and the 1490nm laser and 1310nm detector used in GPON into a single-fiber, four-way optical assembly. This module uses WDM multiplexing to couple the optical output port and is packaged in an SFP+ module.

[0003] However, different manufacturers have different specifications. For example, some manufacturers use a 20-pin interface, while others use a 22-pin interface. The GPON OLT (Gigabit-Capable PON Optical Line Terminal) module used in the currently commonly used OLT (Optical Line Terminal) downlink PON interface has the same pin count as the XGS PON (10G Symmetric Passive Optical Network) or XG PON OLT (10-Gigabit Passive Optical Network Optical Line Terminal) modules, but the signal definitions are different. Whether the downlink interface uses a GPON OLT module or an XGS PON [or XG PON (10-Gigabit Passive Optical Network)] OLT module is determined during OLT hardware design, and they are incompatible with each other.

[0004] It can be seen that how to deal with the compatibility issue between GPON and XGS PON on the same OLT is a technical problem that needs to be solved urgently. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the present application provides a mode switching circuit and electronic equipment to solve the compatibility issues between GPON and XGS PON on the same OLT, allowing users to freely choose conventional GPON OLT modules or XGS PON (or XG PON) OLT modules without replacing the OLT, thereby achieving the beneficial effect of improving user experience.

[0006] The technical solution adopted by the present application to solve the technical problem is: a mode switching circuit applied to the OLT, including a control module, a switching module and an interface module:

[0007] One end of the control module receives a switching instruction signal input from an external source, and the other end is connected to the system CPU of the processor, for obtaining the switching instruction signal and generating a corresponding mode switching signal according to the switching instruction signal;

[0008] The interface module is connected in series between multiple external signal input sources and the processor, and the switching module is connected in series between the interface module and the processor. It is used to adjust the internal signal state of the switching module according to the mode switching signal, thereby switching the signal input source, and further used to adjust the data transmission rate of the switching module to adapt to the switched signal input source, thereby realizing the mode switching of the OLT.

[0009] Optionally, the switching module includes a control switch unit and a data switch unit;

[0010] The input end of the control switch unit is connected to the first output end of the interface module, and the output end of the control switch unit is connected to the first port of the processor for switching the signal input source;

[0011] The input end of the data switch unit is connected to the second output end of the interface module, and the output end of the data switch unit is connected to the second port of the processor for switching the transmission rate to adapt to the switched signal input source.

[0012] Optionally, the data switch unit has built-in human body model electrostatic discharge protection.

[0013] Optionally, the control module includes a key switch;

[0014] The key switch is used to send a switching instruction signal to an external system CPU if the key switch is pressed, and the system CPU sends the mode switching signal to the multiplexer and / or the wide voltage data switch.

[0015] Optionally, the control module further includes a plurality of indicator lights, which are used to control the light display of corresponding indicator lights according to the PON interface through which the interface module currently establishes a signal connection with the switching module.

[0016] Optionally, the interface module includes an SFP+ connector, and the SFP+ connector is used to connect an external GPON OLT module and an XGS PON OLT module or an external GPON OLT module and an XG-PON OLT module.

[0017] A second aspect of the present application provides an electronic device equipped with the above-mentioned mode switching circuit.

[0018] The beneficial effect of the present application is that the user can output a switching instruction signal to the control module, including but not limited to using software communication control and hardware switch control lights. After receiving the switching instruction, the control module generates a corresponding mode switching signal and sends it to the switching module. The switching module adjusts the internal signal on and off according to the switching signal to switch the signal input source corresponding to the mode. In addition, after switching the signal input source, the switching module adjusts the data transmission rate accordingly to adapt to the mode switching, thereby realizing the mode switching of the OLT, that is, solving the compatibility problem of GPON and XGS PON on the same OLT, so that users can freely choose conventional GPON OLT modules or XGS PON (or XG PON) OLT modules without replacing the OLT, thereby achieving the beneficial effect of improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 1 is a schematic diagram of module connections of a mode switching circuit provided in an embodiment of the present application;

[0020] Figure 2 is a circuit schematic diagram of a control module provided in an embodiment of the present application;

[0021] Figure 3 is a circuit schematic diagram of a switching module provided in an embodiment of the present application;

[0022] Figure 4 is a circuit schematic diagram of the interface module provided in an embodiment of the present application;

[0023] Figure numerals: 1. control module; 2. switching module; 3. interface module; 4. key switch; 5. indicator light; 6. multiplexer; 7. wide voltage data switch. DETAILED DESCRIPTION

[0024] The present application is further described below with reference to the accompanying drawings and examples.

[0025] The following will clearly and completely describe the concept, specific structure and technical effects of this application in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features created in this application can be combined interactively without conflicting with each other.

[0026] Please refer to the following Figure 1 , Figure 1 This is a module connection diagram of a mode switching circuit provided in an embodiment of the present application, which is applied to an OLT and includes a control module 1, a switching module 2, and an interface module 3. Each module is described in detail below:

[0027] Regarding the control module 1: one end of the control module 1 receives a switching instruction signal input from the outside, and the other end is connected to the system CPU of the processor. The control module 1 is used to obtain the switching instruction signal and generate a corresponding mode switching signal according to the switching instruction signal.

[0028] Specifically, control module 1 is used by users or personnel (hereinafter referred to as personnel) to switch between multiple OLT modules connected to the interface. It is connected to the system CPU in the processor. For ease of explanation, this application uses two OLT access modules, the GPONOLT module and the XGSON OLT module, as examples. When personnel issue a command to control module 1, a switching command signal is generated. This switching command signal is input to the system CPU connected to control module 1. Based on this signal, the system CPU adjusts the software configuration and sends a corresponding mode switching signal to switching module 2, described below.

[0029] In the embodiment provided in this application, hardware control can be used to send a switching instruction signal. Please refer to Figure 2 , Figure 2 is a circuit schematic diagram of a control module 1 provided in an embodiment of the present application, wherein the control module 1 includes a key switch 4;

[0030] The key switch 4 is used to send a switching instruction signal to an external system CPU when the key switch 4 is pressed, and the system CPU sends the mode switching signal to the multiplexer 6 and / or the wide voltage data switch 7.

[0031] Optionally, the control module 1 further includes a plurality of indicator lights 5 , which are used to control the light display of the corresponding indicator lights 5 according to the PON interface through which the interface module 3 currently establishes a signal connection with the switching module 2 .

[0032] Specifically, the indicator light 5 may be an LED light, which lights up to display the corresponding PON interface of the currently established connection. Relevant personnel may also improve recognizability by selecting indicator lights 5 of different colors and brightness.

[0033] Regarding the switching module 2: the interface module 3 is connected in series between multiple external signal input sources and the processor, and the switching module 2 is connected in series between the interface module and the processor. The switching module 2 is used to adjust the internal signal state of the switching module 2 according to the mode switching signal, thereby switching the signal input source, and also to adjust the data transmission rate of the switching module 2 to adapt to the switched signal input source, thereby realizing the mode switching of the OLT.

[0034] Specifically, the switching module 2 includes a switching switch unit and a data switch unit, respectively. The input end of the control switch unit is connected to the first output end of the interface module 3, the output end of the control switch unit is connected to the first port of the processor, the input end of the data switch unit is connected to the second output end of the interface module 3, and the output end of the data switch unit is connected to the second port of the processor for switching the transmission rate to adapt to the switched signal input source, wherein the switching switch unit is used to switch the signal input source to adjust its internal state signal, and the data switch unit is used to change the signal transmission rate to match the mode switching.

[0035] More specifically, please refer to Figure 3 , Figure 3 : is a circuit schematic diagram of the switching module 2 provided in an embodiment of the present application, including a multiplexer 6 and a wide voltage data switch 7, which is described in detail below:

[0036] The multiplexer 6 is used to switch the first control signal.

[0037] Specifically, the switching module 2 includes at least one 1-to-2 multiplexer and / or demultiplexer, which is designed to operate at a voltage of 1.65V to 3.6V. It can process digital signals and analog signals and transmit signals up to VCC in any signal direction. In this application, the multiplexer 6 is used to adjust the signal transmission rate to a low-speed control signal.

[0038] The wide voltage data switch 7 is used to switch a second control signal, and the transmission rate of the second control signal is higher than the transmission rate of the first control signal.

[0039] Specifically, the wide voltage data switch 7 used in the embodiment of the present application is a 2:1 10Gbit / s SuperSpeed ​​wide voltage data switch 7, which has a designed operating voltage of 1.5V to 5V and low insertion loss. In the present application, the wide voltage data switch 7 is used to switch the control signal of high-speed data.

[0040] Optionally, the wide voltage data switch 7 has built-in human body model electrostatic discharge protection.

[0041] Specifically, a 2kV HBM ESD (Human Body Model Electrostatic Discharge) protection can be built into the wide voltage data switch 7. This protection measure mainly simulates the electrostatic discharge phenomenon generated when a charged human body contacts an electronic device, to ensure that the electronic device can still work normally when affected by such discharge.

[0042] Regarding the interface module 3 : the interface module 3 is used to connect to multiple external OLT modules and output the signal provided by the target OLT module to the switching module 2 . The target OLT module is the OLT module corresponding to the internal signal state of the switching module 2 .

[0043] Specifically, refer to Figure 4 , Figure 4 This is a circuit schematic diagram of the interface module 3 provided in an embodiment of the present application. In the embodiment of the present application, the interface module 3 adopts an SFP+ connector, and the interface module 3 includes an SFP+ connector. The SFP+ connector is used to connect an external GPON OLT module and an XGS PON OLT module or an external GPON OLT module and an XG-PON OLT module.

[0044] Specifically, the SFP+ connector connects to the OLT SFP+ interface, matches the conventional GPON and XGS PON OLT module 2x10pin, and is a 2x10 double-row 20-pin SMT package SFP+ connector.

[0045] The above is a specific description of the preferred implementation of the present application, but the invention of the present application is not limited to the described embodiments. Technical personnel familiar with the art can also make various equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A mode switching circuit, applied to an OLT, characterized in that: Including control module, switching module and interface module: One end of the control module receives a switching instruction signal input from the outside, and the other end is connected to the system CPU of the processor, for obtaining the switching instruction signal and generating a corresponding mode switching signal according to the switching instruction signal; The interface module is connected in series between multiple external signal input sources and the processor, and the switching module is connected in series between the interface module and the processor. It is used to adjust the internal signal state of the switching module according to the mode switching signal, thereby switching the signal input source, and further used to adjust the data transmission rate of the switching module to adapt to the switched signal input source, thereby realizing the mode switching of the OLT.

2. The mode switching circuit according to claim 1, wherein: The switching module includes a control switch unit and a data switch unit; The input end of the control switch unit is connected to the first output end of the interface module, and the output end of the control switch unit is connected to the first port of the processor for switching the signal input source; The input end of the data switch unit is connected to the second output end of the interface module, and the output end of the data switch unit is connected to the second port of the processor for switching the transmission rate to adapt to the switched signal input source.

3. The mode switching circuit according to claim 2, wherein: The data switch unit has built-in human body model electrostatic discharge protection.

4. The mode switching circuit according to claim 2, wherein: The control module includes a key switch; The key switch is used to send a switching instruction signal to an external system CPU if the key switch is pressed, and the system CPU sends the mode switching signal to the multiplexer and / or wide voltage data switch in the switching module.

5. The mode switching circuit according to claim 4, wherein: The control module further includes a plurality of indicator lights, which are used to control the light display of corresponding indicator lights according to the PON interface that currently establishes a signal connection between the interface module and the switching module.

6. The mode switching circuit according to claim 1, wherein: The interface module includes an SFP+ connector, and the SFP+ connector is used to connect an external GPON OLT module and an XGS PON OLT module or an external GPON OLT module and an XG-PON OLT module.

7. An electronic device, characterized in that: The device is equipped with a mode switching circuit as described in any one of claims 1 to 6.

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