SFP optical module

Abstract

The utility model discloses an SFP (Small Form-factor Pluggable) optical module, which comprises an external interface connector, an RS232 chip / RS485 chip, a network serial port unvarnished transmission chip, a transceiving chip, a golden finger and a singlechip, the singlechip is connected with the transceiving chip through a serial interface, the singlechip is connected with the golden finger through an IIC (Inter-Integrated Circuit) bus interface, and the serial port unvarnished transmission chip is connected with the golden finger. The golden finger is connected with a SERDES interface of the transceiving chip, the transceiving chip is connected with the network serial port unvarnished transmission chip, the network serial port unvarnished transmission chip is connected with the RS232 chip / RS485 chip, and the RS232 chip / RS485 chip is connected with an external interface connector. The SFP optical module provided by the utility model is plug-and-play, does not need tedious installation and wiring processes, greatly saves the space, and improves the convenience compared with a conventional serial server.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an SFP optical module. Background Art

[0002] The existing technology has the following problems and defects when processing the connection between the switch and the RS232 signal or RS485 signal: first, the technology is highly dependent. If the existing switch wants to access the RS232 signal or RS485 signal, it must rely on the serial port server as an intermediary. This dependence not only increases the complexity of the system, but also limits the compatibility and flexibility of the equipment; second, the cost is high. As a special device, the serial port server has a relatively high price, which is a considerable burden for users with limited budgets; third, the configuration is complicated. The configuration process of the serial port server involves the setting and adjustment of multiple parameters, which requires construction personnel to have high professional knowledge and skills. However, in actual construction, not all construction personnel have such capabilities, which may lead to configuration errors or delay construction progress; finally, it is inconvenient. Due to the existence of the serial port server, the connection between the switch and the RS232 signal or RS485 signal becomes less direct and concise, which not only increases the number of devices and the complexity of wiring, but also reduces the overall efficiency and stability of the system. Summary of the invention

[0003] In view of the above problems, the utility model provides an SFP optical module, which aims to convert RS232 or RS485 communication into network communication and is compatible with the SFP interface on the switch, so as to meet the needs in a specific communication environment and improve the communication efficiency, communication stability and interface compatibility.

[0004] The SFP optical module of the utility model comprises: an external interface connector, an RS232 chip / RS485 chip, a network serial port transparent transmission chip, a transceiver chip, a gold finger and a single-chip microcomputer, wherein the single-chip microcomputer is connected to the transceiver chip through a serial interface, the single-chip microcomputer is connected to the gold finger through an IIC bus interface, the gold finger is connected to a SERDES interface of the transceiver chip, the transceiver chip is connected to the network serial port transparent transmission chip, the network serial port transparent transmission chip is connected to the RS232 chip / RS485 chip, and the RS232 chip / RS485 chip is connected to the external interface connector.

[0005] A further technical solution of the utility model is: the network serial port transparent transmission chip is CH9120.

[0006] A further technical solution of the utility model is: the transceiver chip is RTL8231.

[0007] A further technical solution of the utility model is: the transceiver chip is connected to the network serial port transparent transmission chip via a twisted pair Ethernet interface.

[0008] A further technical solution of the utility model is: the single chip microcomputer is connected to the signal RX_LOS and signal TX_FULL input terminals of the gold finger through the GPIO interface.

[0009] A further technical solution of the utility model is: the TX_DISABLE signal output end of the gold finger is connected to the TX_DISABLE signal input end of the single chip microcomputer.

[0010] A further technical solution of the utility model is: the RS485 chip is connected to the connector via interface PIN1 and interface PIN2, wherein PIN1 is a positive terminal and PIN2 is a negative terminal.

[0011] A further technical solution of the utility model is: the RS232 chip is connected to the connector via interface PIN3, interface PIN4 and interface PIN5, wherein PIN3 is a transmitting end, PIN4 is a receiving end, and PIN5 is grounded.

[0012] A further technical solution of the utility model is: the SFP optical module integrates the RS232 chip or the RS485 chip, the network serial port transparent transmission chip, the transceiver chip, the single-chip microcomputer and the gold finger on a PCB circuit board, and the PCB circuit board is connected to the wiring terminals on the external interface connector through wires.

[0013] The utility model provides an SFP optical module, which integrates a transceiver chip, a network serial port transparent transmission chip, and an RS232 chip or an RS485 chip, realizes the conversion from a SERDES interface to an RS232 or RS485 interface, thereby opening up a communication bridge between Ethernet and RS232 or RS485. The SFP optical module designed by the utility model is truly plug-and-play, does not require cumbersome installation and wiring processes, greatly saves space, and improves convenience compared to traditional serial port servers. In terms of maintenance, the SFP module also shows its advantages, not only the maintenance process is simple, but also the cost is relatively low. In addition, due to the stable design of the chip integrated inside the SFP optical module, its failure rate is also maintained at a low level, providing users with a reliable and efficient communication experience. At the same time, the SFP module space is very small, and the distance between the integrated PCB circuit board and the shell is also very narrow. The wiring terminals on the existing external interface connector cannot be placed on the PCB board. In order to solve this problem, the PCB circuit board is connected to the wiring terminals on the external interface connector through wires, so that the signal line can be connected to the wiring terminals very conveniently.

[0014] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description are used to explain the principle of the present utility model.

[0016] Figure 1 It is a structural schematic diagram of the SFP optical module provided by an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the RS-232 interface provided by the embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the RS-485 interface provided by the embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall external structure of the SFP optical module provided by an embodiment of the utility model;

[0020] Figure 5 It is a schematic diagram of the overall internal structure of the SFP optical module provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0022] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0023] like Figure 1 to Figure 5 As shown, the SFP optical module proposed by the utility model provides the following embodiments:

[0024] See also Figure 1The SFP optical module includes: an external interface connector, an RS232 chip / RS485 chip, a network serial port transparent transmission chip, a transceiver chip, a gold finger and a single-chip microcomputer. The single-chip microcomputer is connected to the transceiver chip through a serial interface, the single-chip microcomputer is connected to the gold finger through an IIC bus interface, the gold finger is connected to the SERDES interface of the transceiver chip, the transceiver chip is connected to the network serial port transparent transmission chip, the network serial port transparent transmission chip is connected to the RS232 chip / RS485 chip, and the RS232 chip / RS485 chip is connected to the external interface connector.

[0025] In a preferred embodiment, the network serial port transparent transmission chip is CH9120.

[0026] In a preferred embodiment, the transceiver chip is RTL8231.

[0027] In a preferred embodiment, the single chip microcomputer is GD32E230F8V6.

[0028] like Figure 1 As shown, in a preferred embodiment, the transceiver chip is connected to the network serial port transparent transmission chip via a twisted pair Ethernet interface.

[0029] like Figure 1 As shown, in a preferred embodiment, the single chip microcomputer is connected to the signal RX_LOS and signal TX_FULL input terminals of the gold finger through a GPIO interface.

[0030] like Figure 1 As shown, in a preferred embodiment, the TX_DISABLE signal output terminal of the gold finger is connected to the TX_DISABLE signal input terminal of the single-chip microcomputer.

[0031] like Figure 2 As shown, in a preferred embodiment, the RS485 chip is connected to the connector via interface PIN1 and interface PIN2, wherein PIN1 is the positive terminal and PIN2 is the negative terminal.

[0032] like Figure 3 As shown, in a preferred embodiment, the RS232 chip is connected to the connector through interface PIN3, interface PIN4 and interface PIN5, wherein PIN3 is a transmitting end, PIN4 is a receiving end, and PIN5 is grounded.

[0033] like Figure 4 , Figure 5As shown, the SFP optical module integrates the RS232 chip or the RS485 chip, the network serial port transparent transmission chip, the transceiver chip, the single-chip microcomputer and the gold finger on a PCB circuit board, and the PCB circuit board is connected to the wiring terminals on the external interface connector through wires.

[0034] During the specific implementation process, the MCU configured the RTL8231 with the help of the SMI interface to ensure that it runs in the SERDES to 10BASE-T mode. In addition, the flash memory inside the MCU is used to store the relevant information of the SFP module, so that the switch can easily obtain this module information through the IIC interface. The MCU is also responsible for monitoring the status of the SERDES and outputting the relevant information as RX_LOS and TX_FULL signals through the GPIO interface. At the same time, the TX_DISABLE signal is directly connected to the MCU, and the MCU controls the opening and closing status of the SERDES and 10BASE-T according to the status of this signal.

[0035] In the specific implementation process, CH9120 is a chip specially used to convert TTL serial port data into Ethernet data. It integrates PHY function internally and is connected to RTL8231 through 10BASE-T interface to realize data conversion and transmission.

[0036] During the specific implementation process, the RS232 chip is responsible for converting the TTL level to the RS232 level, ensuring smooth communication between different level standards.

[0037] During the specific implementation process, the RS485 chip is responsible for converting the TTL level to the RS485 level, ensuring smooth communication between different level standards.

[0038] A SFP optical module provided by the above-mentioned embodiments integrates a transceiver chip, a network serial port transparent transmission chip, and an RS232 chip or an RS485 chip, and realizes the conversion from a SERDES interface to an RS232 or RS485 interface, thereby opening up a communication bridge between Ethernet and RS232 or RS485. The SFP optical module designed by the utility model is truly plug-and-play, without the need for cumbersome installation and wiring processes, greatly saving space, and improving convenience compared to traditional serial port servers. In terms of maintenance, the SFP module also shows its advantages. Not only is the maintenance process simple, but the cost is relatively low. In addition, due to the stable design of the chip integrated inside the SFP optical module, its failure rate is also maintained at a low level, providing users with a reliable and efficient communication experience.

[0039] In this document, the terms "comprises," "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, such that a step or method that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such step or method.

[0040] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An SFP optical module, characterized in that: The SFP optical module includes: an external interface connector, an RS232 chip / RS485 chip, a network serial port transparent transmission chip, a transceiver chip, a gold finger and a single-chip microcomputer. The single-chip microcomputer is connected to the transceiver chip through a serial interface, the single-chip microcomputer is connected to the gold finger through an IIC bus interface, the gold finger is connected to the SERDES interface of the transceiver chip, the transceiver chip is connected to the network serial port transparent transmission chip, the network serial port transparent transmission chip is connected to the RS232 chip / RS485 chip, and the RS232 chip / RS485 chip is connected to the external interface connector.

2. The SFP optical module according to claim 1, characterized in that: The network serial port transparent transmission chip is CH9120.

3. The SFP optical module according to claim 1, characterized in that: The transceiver chip is RTL8231.

4. The SFP optical module according to claim 1, characterized in that: The transceiver chip is connected to the network serial port transparent transmission chip via a twisted pair Ethernet interface.

5. The SFP optical module according to claim 1, characterized in that: The single chip microcomputer is connected to the signal RX_LOS and signal TX_FULL input terminals of the gold finger through the GPIO interface.

6. The SFP optical module according to claim 1, characterized in that: The TX_DISABLE signal output terminal of the gold finger is connected to the TX_DISABLE signal input terminal of the single chip microcomputer.

7. The SFP optical module according to claim 1, characterized in that: The RS485 chip is connected to the connector via interface PIN1 and interface PIN2, wherein PIN1 is the positive terminal and PIN2 is the negative terminal.

8. The SFP optical module according to claim 1, characterized in that: The RS232 chip is connected to the connector via interface PIN3, interface PIN4 and interface PIN5, wherein PIN3 is a transmitting end, PIN4 is a receiving end, and PIN5 is grounded.

9. The SFP optical module according to claim 1, characterized in that: The SFP optical module integrates the RS232 chip or the RS485 chip, the network serial port transparent transmission chip, the transceiver chip, the single-chip microcomputer and the gold finger on a PCB circuit board, and the PCB circuit board is connected to the wiring terminals on the external interface connector through wires.

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