DMA-based multi-serial port to network port unvarnished transmission module

Abstract

The utility model relates to the technical field of interface conversion, in particular to a DMA (direct memory access)-based multi-serial-port-to-network-port unvarnished transmission module. In order to solve the problem that a common single-path serial port server in the prior art cannot meet the access requirements of multiple devices, the utility model provides a new DMA-based multi-serial port to network port unvarnished transmission module, which comprises an MCU (Microprogrammed Control Unit) in which a DMA controller is arranged, an RS232 interface chip, a three-core connector, a PHY (Physical Layer) chip and an RJ45 interface, the MCU realizes conversion from a UART TTL level to an RS232 level by externally connecting a plurality of RS232 interface chips, provides a multipath serial port equipment access interface through a plurality of three-core connectors, realizes conversion from parallel Ethernet data to a level signal conforming to an Ethernet physical layer link data transmission format through a PHY chip, and provides a standard network interface through an RJ45. And data unvarnished transmission between the plurality of serial port devices and the network interface is realized.

Description

Technical Field

[0001] This utility model relates to the field of interface conversion technology, specifically a DMA-based multi-serial port to network port transparent transmission module. Background Technology

[0002] Currently, most common serial port servers in existing technologies are single-channel serial-to-network modules. However, with the increasing demand for centralized control, the functions of single-channel serial port servers are too limited and cannot meet the access requirements of multiple devices. Furthermore, common multi-channel serial port servers are too bulky and do not meet the needs of portable embedded devices. Summary of the Invention

[0003] To address the problem that existing single-channel serial port servers cannot meet the access requirements of multiple devices, this invention provides a new DMA-based multi-serial port to network port pass-through module.

[0004] This utility model is achieved using the following technical solution:

[0005] A DMA-based multi-serial-to-network transparent transmission module includes an MCU with an internal DMA controller, multiple RS232 interface chips, multiple three-core connectors, a PHY chip, and an RJ45 interface. The MCU converts UART TTL level to RS232 level through multiple external RS232 interface chips and provides multiple serial port device access interfaces through multiple three-core connectors, enabling the access of multiple serial port devices. The MCU converts parallel Ethernet data to level signals conforming to the Ethernet physical layer link data transmission format through the PHY chip and provides a standard network interface through the RJ45, enabling data transparent transmission between multiple serial port devices and the network interface.

[0006] When in use, it connects to the control system via a network interface, facilitating the centralized transmission of data from multiple serial port devices to the control system. This enables centralized control of multiple serial port devices, allowing users to intuitively understand the operating parameters and related configurations of each device. Furthermore, its DMA-based data transmission method significantly improves CPU efficiency and data transmission stability.

[0007] Furthermore, the RS232 interface chip consists of two dual-channel RS232 interface chips and one single-channel RS232 interface chip. Each RS232 interface chip is equipped with a three-pin connector, thus providing five serial port device access interfaces.

[0008] Furthermore, the module is also equipped with an EEPROM to store the IP configuration address issued by the control system, so that the system can be initialized the next time the system is powered on.

[0009] The beneficial effects of this utility model are as follows: The DMA-based multi-serial port to network port transparent transmission module of this utility model realizes the transparent transmission of data between multiple serial port devices and network interfaces, and greatly improves the working efficiency of the CPU and the stability of data transmission. At the same time, it is small in size, providing a solution for the portable centralized control of multiple serial port devices. Attached Figure Description

[0010] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] In the diagram: 1-Three-core connector, 2-RS232 chip, 3-MCU, 4-PHY chip, 5-RJ45 interface, 6-Control system, 7-EEPROM. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0015] In this description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0017] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0018] like Figure 1 As shown, a DMA-based multi-serial-to-network transparent transmission module includes an MCU3 with an internal DMA controller, multiple RS232 interface chips 2, multiple three-core connectors 1, a PHY chip 4, and an RJ45 interface 5. The MCU3 converts UART TTL level to RS232 level through multiple external RS232 interface chips 2 and provides multiple serial port device access interfaces through multiple three-core connectors 1, enabling the access of multiple serial port devices. The MCU3 converts parallel Ethernet data to level signals conforming to the Ethernet physical layer link data transmission format through the PHY chip 4, and provides a standard network interface through the RJ45, enabling data transparent transmission between multiple serial port devices and the network interface.

[0019] In use, it connects to the control system 6 via a network interface, facilitating the centralized transmission of data from multiple serial port devices to the control system 6, enabling centralized control of multiple serial port devices. This allows users to intuitively understand the working parameters and related configurations of each device. Furthermore, its DMA-based data transmission method greatly improves CPU efficiency and data transmission stability.

[0020] In specific implementation, the RS232 interface chip 2 consists of two dual-channel RS232 interface chips 2 and one single-channel RS232 interface chip 2. Each RS232 interface chip 2 is equipped with a three-core connector 1, thereby providing 5 serial port device access interfaces.

[0021] In practice, this module also has an EEPROM7, which is used to store the IP counterweight address issued by the control system 6 so that the system can be initialized after the next power-on.

[0022] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and all should be covered by the protection scope of the claims.

Claims

1. A DMA-based multi-serial port to network port transparent transmission module, characterized in that, It includes an MCU (3) with a built-in DMA controller, multiple RS232 interface chips (2), multiple three-core connectors (1), a PHY chip (4), and an RJ45 interface (5). The MCU (3) converts UART TTL level to RS232 level through multiple external RS232 interface chips (2) and provides multiple serial port device access interfaces through multiple three-core connectors (1) to realize the access of multiple serial port devices. The MCU (3) converts parallel Ethernet data to level signals that conform to the Ethernet physical layer link data transmission format through the PHY chip (4) and provides a standard network interface through RJ45 to realize the data pass-through between multiple serial port devices and the network interface.

2. The DMA-based multi-serial port to network port transparent transmission module according to claim 1, characterized in that, The RS232 interface chip (2) consists of two dual-channel RS232 interface chips (2) and one single-channel RS232 interface chip (2), and each RS232 interface chip (2) is equipped with a three-core connector (1).

3. The DMA-based multi-serial port to network port transparent transmission module according to claim 2, characterized in that, This module also includes an EEPROM (7).

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