COMe module base plate compatible with various CPUs

Abstract

The utility model discloses a COMe module base plate compatible with various CPUs, and relates to the technical field of COMe board cards, the COMe module base plate comprises a voltage conversion unit, a network interface unit, a PCIE to UART unit, an RS422 serial port unit, a USB interface unit, an audio interface unit, a PS2 interface unit, a CAN interface unit and an IPMI interface unit; the voltage converter is used for converting initial input voltage into various power supply voltages; the network interface module is used for providing multi-path network interfaces; the PCIE bus conversion module is used for converting a PCIE bus into multiple paths of UART The 422 signal conversion module is used for converting the UART interface into a 422 signal for external communication; the USB interface module is used for expanding USB interfaces; the interface module is used for expanding an audio input interface and an audio output interface according to a USB interface; the input interface is expanded; the CAN interface is used for expanding a CAN communication interface; the method is used for monitoring the power-on time sequence and voltage of the bottom plate. The system has the advantages of high integration, compatibility, flexibility, reliability and intelligent management function.

Description

Technical Field

[0001] The present application relates to the field of COMe board technology, and more specifically, to a COMe module baseboard compatible with multiple CPUs. Background Art

[0002] The COMe module, short for COM Express (Computer on Module Express), is a computer module specification (also known as COM.0) developed by PICMG (PCI Industrial Computer Manufacturers Group). It is an integrated, embedded single-board computer module that enables the rapid assembly of customized industrial computer solutions through signal expansion carrier boards. Motherboards that comply with the COMe specification are called COMe modules.

[0003] The COMe standard is a new high-speed computer interface standard. Its connector pinouts include Type 10, Type 2 (including the PCI (Peripheral Component Interconnect) bus definition), Type 6, and Type 7. Currently, Type 10, Type 6, and Type 7 are the most commonly used pinouts.

[0004] However, the current COMe module baseboard cannot support the growing demand for interface function resources, cannot achieve consistency in the device's external interface, and is difficult to design a unified expansion circuit on the baseboard to achieve simultaneous compatibility with multiple different CPUs. Different baseboard designs can only be used for different CPUs, which reduces its versatility and increases design costs. Utility Model Content

[0005] In response to at least one defect or improvement need in the prior art, the present invention provides a COMe module baseboard compatible with multiple CPUs, which is used to solve the problem in the prior art that the same COMe module baseboard cannot be compatible with multiple different CPUs and can only use different baseboard designs for different CPUs, which reduces its versatility and increases design costs.

[0006] To achieve the above objectives, according to a first aspect of the present utility model, a COMe module baseboard compatible with multiple CPUs is provided, comprising: a voltage conversion unit, a network interface unit, a PCIE to UART unit, an RS422 serial port unit, a USB interface unit, an audio interface unit, a PS2 interface unit, a CAN interface unit, and an IPMI interface unit;

[0007] The voltage conversion unit is used to convert the initial input voltage into multiple supply voltages;

[0008] The network interface unit is used to provide multiple network interfaces;

[0009] The PCIE to UART unit is used to convert the PCIE bus into a multi-channel UART interface;

[0010] The RS422 serial port unit is used to convert the UART interface into 422 signals for external communication;

[0011] The USB interface unit is used to expand the USB interface;

[0012] The audio interface unit is used to expand the audio input interface and audio output interface based on the USB interface;

[0013] The PS2 interface unit is used to expand the input interface;

[0014] The CAN interface unit is used to expand the CAN communication interface;

[0015] The IPMI interface unit is used for power-on sequencing and voltage monitoring of the backplane.

[0016] In a possible implementation, the voltage conversion unit includes an SM4644 chip and an ER1117 chip; the initial input voltage is converted into multiple supply voltages by the SM4644 chip and the ER1117 chip.

[0017] In a possible implementation, the network interface unit includes an INTEL 82580 chip; the INTEL 82580 chip converts one PCIE 2.0x1 channel into two SGMII channels and two 1000Base-T channels.

[0018] In a possible implementation, the PCIE to UART unit includes a CH384 chip; the CH384 chip converts two UART signals through one PCIE 2.0X1.

[0019] In a possible implementation, the RS422 serial port unit includes an SM3490 chip; the SM3490 chip converts UART signals into 422 signals for external communication.

[0020] In a possible implementation, the USB interface unit includes a μPD720201 chip; the μPD720201 chip provides one PCIe x1 upstream port and four USB 3.0 ports and four USB 2.0 ports downstream.

[0021] In a possible implementation, the audio interface unit includes a CM6533 chip; the CM6533 chip converts one USB2.0 signal into one LINE OUT signal and one MC IN signal.

[0022] In a possible implementation, the PS2 interface unit includes a W83627 chip; the W83627 chip expands two UARTs and one PS2 signal through one LPC bus, and the two UART signals are converted into RS232 signals through an SM3232 interface chip.

[0023] In a possible implementation, the CAN interface unit includes an MCP2515 chip; the MCP2515 chip converts one SPI signal into one CAN signal.

[0024] In one possible implementation, the IPMI interface unit includes a GD32F103 chip; the GD32F103 chip communicates with the CPU and the power module through an I2C bus to monitor power-on timing and voltage.

[0025] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0026] The utility model provides a COMe module baseboard compatible with multiple CPUs, which integrates multiple functional units such as voltage conversion, network interface, serial communication, etc., and can be compatible with multiple CPUs, thereby improving the flexibility and scalability of the system. This highly integrated design reduces the need for external components and connecting wires, reducing system complexity and cost. The voltage conversion unit can convert the initial input voltage into a variety of power supply voltages, meeting the voltage requirements of different CPUs and peripheral devices, and enhancing the compatibility and stability of the system; the network interface unit provides multiple network interfaces, supports multiple network communication protocols, and improves the efficiency and reliability of data transmission; the PCIE to UART unit and RS422 serial port unit provide a rich series of serial communication interfaces, supporting multiple communication protocols and data transmission methods; the USB interface unit, audio interface unit, PS2 interface unit, etc. provide a variety of input and output interfaces to meet the connection requirements of different devices and applications; the CAN interface unit expands the CAN communication interface, enabling the system to communicate with other CAN devices, and is suitable for a variety of fields; the IPMI interface unit is used for the power-on timing and voltage monitoring of the baseboard, and provides intelligent management functions; it adopts a modular design, and each functional unit is relatively independent, so it is easy to maintain and upgrade. When a functional unit fails, it can be replaced or repaired individually without replacing the entire baseboard, reducing maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a structural diagram of an embodiment of a COMe module baseboard compatible with multiple CPUs provided by the present invention;

[0029] Figure 2 A topological structure diagram of an embodiment of a voltage conversion unit provided by the present utility model;

[0030] Figure 3 This is a structural diagram of an embodiment of a PCIE to UART unit provided by the present invention;

[0031] Figure 4 A topological diagram of an embodiment of a USB interface unit provided by the present utility model;

[0032] Figure 5 This is a schematic diagram of the principle of an embodiment of the CM6533 chip provided by the utility model;

[0033] Figure 6 This is a schematic diagram of the internal structure of the W83627 chip according to an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the internal structure of the MCP2515 chip according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0036] The terms "first," "second," "third," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0037] See also Figure 1 , Figure 1This is a structural diagram of an embodiment of a COMe module baseboard compatible with multiple CPUs provided by the utility model. In a specific embodiment of the utility model, a COMe module baseboard compatible with multiple CPUs is disclosed, including: a voltage conversion unit, a network interface unit, a PCIE to UART unit, an RS422 serial port unit, a USB interface unit, an audio interface unit, a PS2 interface unit, a CAN interface unit, and an IPMI interface unit;

[0038] The voltage conversion unit is used to convert the initial input voltage into multiple supply voltages;

[0039] The network interface unit is used to provide multiple network interfaces;

[0040] The PCIE to UART unit is used to convert the PCIE bus into a multi-channel UART interface;

[0041] The RS422 serial port unit is used to convert the UART interface into 422 signals for external communication;

[0042] The USB interface unit is used to expand the USB interface;

[0043] The audio interface unit is used to expand the audio input interface and audio output interface based on the USB interface;

[0044] The PS2 interface unit is used to expand the input interface;

[0045] The CAN interface unit is used to expand the CAN communication interface;

[0046] The IPMI interface unit is used for power-on sequencing and voltage monitoring of the backplane.

[0047] In the above embodiment, the voltage conversion unit is the core power supply component of the entire backplane. It is responsible for efficiently converting the input initial voltage (such as 12V or 24V DC) into a variety of different supply voltages to meet the specific voltage requirements of different components such as the CPU, memory, and storage devices. This design not only ensures stable system operation but also improves energy efficiency.

[0048] To support high-speed data transmission and network connection, the network interface unit provides multiple network interfaces, including but not limited to Gigabit Ethernet ports, supporting multiple network protocols, ensuring that the device can seamlessly access the local area network or wide area network, and realize fast data exchange and remote management.

[0049] The PCIE to UART unit uses advanced conversion technology to convert the high-speed PCIE (Peripheral Component Interconnect Express) bus into a multi-channel UART (Universal Asynchronous Receiver / Transmitter) interface, providing a convenient connection method for external devices that rely on serial communication and enhancing system compatibility.

[0050] Taking into account the special needs of industrial control and automation fields, the RS422 serial port unit is designed to convert the UART interface into 422 signals to achieve stable communication over long distances and in high-noise environments, thereby enhancing the system's anti-interference ability and communication distance.

[0051] To expand connectivity, the USB interface unit provides multiple USB ports (including USB 2.0, USB 3.0 or higher), supporting the connection of multiple peripherals such as keyboard, mouse, storage device, camera, etc., greatly enriching the user experience.

[0052] Based on the powerful expansion capabilities of the USB interface, the audio interface unit not only provides standard audio input and output interfaces, but also supports high-definition audio transmission, meeting users' needs for high-quality audio experience and is suitable for multimedia applications, video conferencing and other scenarios.

[0053] To be compatible with older peripherals, the PS2 interface unit provides traditional keyboard and mouse interfaces, ensuring system compatibility and stability when connected to these devices.

[0054] To meet the special needs of industrial automation and vehicle communication, the CAN (Controller Area Network) interface unit provides a high-speed and reliable CAN communication interface to support data exchange and control command transmission between devices.

[0055] The IPMI interface unit (Intelligent Platform Management Interface) is responsible for monitoring the power-on sequence and voltage status of the backplane to ensure the security and stability of the system startup process. It also provides remote management functions to facilitate system maintenance and administrators to perform real-time monitoring and troubleshooting.

[0056] Compared with the prior art, the COMe module baseboard provided in this embodiment is compatible with multiple CPUs and integrates multiple functional units, such as voltage conversion, network interface, serial communication, etc., and is compatible with multiple CPUs, thereby improving the flexibility and scalability of the system. This highly integrated design reduces the need for external components and connecting wires, reducing system complexity and cost. The voltage conversion unit can convert the initial input voltage into a variety of power supply voltages, meeting the voltage requirements of different CPUs and peripheral devices, and enhancing the compatibility and stability of the system; the network interface unit provides multiple network interfaces, supports multiple network communication protocols, and improves the efficiency and reliability of data transmission; the PCIE to UART unit and RS422 serial port unit provide a rich series of serial communication interfaces, supporting multiple communication protocols and data transmission methods; the USB interface unit, audio interface unit, PS2 interface unit, etc. provide a variety of input and output interfaces to meet the connection requirements of different devices and applications; the CAN interface unit expands the CAN communication interface, enabling the system to communicate with other CAN devices, and is suitable for a variety of fields; the IPMI interface unit is used for the power-on timing and voltage monitoring of the baseboard, and provides intelligent management functions; it adopts a modular design, and each functional unit is relatively independent, so it is easy to maintain and upgrade. When a functional unit fails, it can be replaced or repaired individually without replacing the entire baseboard, reducing maintenance costs and time.

[0057] See also Figure 2 , Figure 2 This is a topological structure diagram of an embodiment of the voltage conversion unit provided by the present invention. In some embodiments of the present invention, the voltage conversion unit includes an SM4644 chip and an ER1117 chip; the initial input voltage is converted into multiple power supply voltages through the SM4644 chip and the ER1117 chip.

[0058] In the above embodiment, the voltage conversion unit includes the SM4644 chip and the ER1117 chip. With its excellent power conversion efficiency and stability, the SM4644 chip serves as the primary voltage regulator, responsible for converting the input DC voltage into the primary supply voltage required by the system. The ER1117 chip, on the other hand, serves as an auxiliary regulator, generating more refined voltage levels to meet the specific requirements of different components. Through the collaborative operation of the SM4644 and ER1117 chips, the voltage conversion unit can efficiently and stably convert the initial input voltage into a variety of supply voltages, ensuring the normal operation of the system.

[0059] In some embodiments of the present invention, the network interface unit includes an INTEL 82580 chip; the INTEL 82580 chip converts one PCIE 2.0x1 into two SGMIIs and two 1000Base-Ts.

[0060] In the above embodiment, the network interface unit includes the Intel 82580 chip, which is known for its powerful network processing capabilities and low power consumption. Through one PCIE 2.0x1 interface, the Intel 82580 chip can convert two SGMII (Serial Gigabit Media Independent Interface) interfaces and two 1000Base-T Ethernet interfaces, supporting gigabit network transmission and providing high-speed, reliable network connection services for the system.

[0061] See also Figure 3 , Figure 3 This is a structural diagram of an embodiment of a PCIE to UART unit provided by the present invention. In some embodiments of the present invention, the PCIE to UART unit includes a CH384 chip; the CH384 chip converts two UART signals through one PCIE2.0X1.

[0062] In the above embodiment, the PCIE to UART unit includes a CH384 chip, which can efficiently convert two UART signals through a PCIE 2.0x1 interface. This design not only improves the flexibility of the system, but also enables the system to easily connect to various serial communication-based peripherals.

[0063] In some embodiments of the present invention, the RS422 serial port unit includes an SM3490 chip; the SM3490 chip converts UART signals into 422 signals for external communication.

[0064] In the above embodiment, the RS422 serial port unit includes the SM3490 chip, which can convert UART signals into 422 signals, enabling stable communication over long distances and in high-noise environments. This design not only improves the system's anti-interference ability, but also enables the system to operate stably in harsh industrial environments.

[0065] See also Figure 4 , Figure 4 This is a topological diagram of an embodiment of the USB interface unit provided by the present invention. In some embodiments of the present invention, the USB interface unit includes a μPD720201 chip; the μPD720201 chip provides one PCIe x1 upstream port and four USB 3.0 and four USB 2.0 downstream ports.

[0066] In the above embodiment, the USB interface unit includes the μPD720201 chip, which connects to the system bus via a PCIe x1 interface upstream and provides four USB 3.0 ports and four USB 2.0 ports downstream. This design not only improves system connectivity but also allows the system to connect multiple USB devices simultaneously, meeting diverse user needs.

[0067] See also Figure 5 , Figure 5 This is a schematic diagram of the principle of an embodiment of the CM6533 chip provided by the present invention. In some embodiments of the present invention, the audio interface unit includes a CM6533 chip; the CM6533 chip converts one USB2.0 signal into one LINE OUT signal and one MC IN signal.

[0068] In the above embodiment, the audio interface unit includes a CM6533 chip, which converts a USB 2.0 signal input into a LINE OUT audio output interface and a MIC IN audio input interface. This design not only improves the system's audio processing capabilities but also enables the system to easily implement audio recording and playback functions.

[0069] See also Figure 6 , Figure 6 This is an internal schematic diagram of an embodiment of the W83627 chip provided by the present invention. In some embodiments of the present invention, the PS2 interface unit includes a W83627 chip; the W83627 chip expands two UARTs and one PS2 signal through one LPC bus, and the two UART signals are converted into RS232 signals through the SM3232 interface chip.

[0070] In the above embodiment, the PS2 interface unit includes a W83627 chip, which extends one LPC bus to create two UART interfaces and one PS2 interface. The two UART signals are converted to RS232 signals via an SM3232 interface chip to meet the connection requirements of specific peripheral devices. This design not only improves system compatibility but also enables simultaneous connection of multiple input devices, such as a keyboard and mouse.

[0071] See also Figure 7 , Figure 7 This is an internal schematic diagram of an embodiment of the MCP2515 chip provided by the present invention. In some embodiments of the present invention, the CAN interface unit includes the MCP2515 chip; the MCP2515 chip converts one SPI signal into one CAN signal.

[0072] In the above embodiment, the CAN interface unit includes an MCP2515 chip, which connects to the system bus via an SPI signal and converts it into a CAN signal. This design not only improves the system's communication capabilities but also enables the system to easily connect and communicate with various CAN-based devices.

[0073] In some embodiments of the present invention, the IPMI interface unit includes a GD32F103 chip; the GD32F103 chip communicates with the CPU and the power module via an I2C bus to monitor power-on timing and voltage.

[0074] In the above embodiment, the IPMI interface unit includes a GD32F103 chip, which communicates with the CPU and power module via the I2C bus, enabling real-time monitoring of the system's power-on sequence and voltage status. This design not only improves system reliability and stability but also enables the system to take timely protective measures in the event of an abnormality, ensuring safe operation.

[0075] In summary, the present invention provides a COMe module baseboard compatible with multiple CPUs, which integrates multiple functional units, such as voltage conversion, network interface, serial communication, etc., and is compatible with multiple CPUs, thereby improving the flexibility and scalability of the system. This highly integrated design reduces the need for external components and connecting wires, reducing system complexity and cost. The voltage conversion unit can convert the initial input voltage into a variety of power supply voltages, meeting the voltage requirements of different CPUs and peripheral devices, and enhancing the compatibility and stability of the system; the network interface unit provides multiple network interfaces, supports multiple network communication protocols, and improves the efficiency and reliability of data transmission; the PCIE to UART unit and RS422 serial port unit provide a rich series of serial communication interfaces, supporting multiple communication protocols and data transmission methods; the USB interface unit, audio interface unit, PS2 interface unit, etc. provide a variety of input and output interfaces to meet the connection requirements of different devices and applications; the CAN interface unit expands the CAN communication interface, enabling the system to communicate with other CAN devices, and is suitable for a variety of fields; the IPMI interface unit is used for the power-on timing and voltage monitoring of the baseboard, and provides intelligent management functions; it adopts a modular design, and each functional unit is relatively independent, so it is easy to maintain and upgrade. When a functional unit fails, it can be replaced or repaired individually without replacing the entire baseboard, reducing maintenance costs and time.

[0076] It should be noted that for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0077] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interface, and the indirect coupling or communication connection of the device or unit can be electrical or other forms.

[0079] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0080] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0081] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, including a number of instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk.

[0082] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, which may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0083] The above is only an exemplary embodiment of the present disclosure and cannot be used to limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure herein, those skilled in the art will easily think of the implementation scheme of the present disclosure. This application is intended to cover any variation, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not recorded in the present disclosure. The description and examples are to be regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

[0084] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A COMe module baseboard compatible with multiple CPUs, characterized in that: include: Voltage conversion unit, network interface unit, PCIE to UART unit, RS422 serial port unit, USB interface unit, audio interface unit, PS2 interface unit, CAN interface unit and IPMI interface unit; The voltage conversion unit is used to convert the initial input voltage into a plurality of supply voltages; The network interface unit is used to provide a multi-channel network interface; The PCIE to UART unit is used to convert the PCIE bus into a multi-channel UART interface; The RS422 serial port unit is used to convert the UART interface into a 422 signal for external communication; The USB interface unit is used to expand the USB interface; The audio interface unit is used to expand the audio input interface and audio output interface according to the USB interface; The PS2 interface unit is used to expand the input interface; The CAN interface unit is used to expand the CAN communication interface; The IPMI interface unit is used for power-on timing and voltage monitoring of the baseboard.

2. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The voltage conversion unit includes an SM4644 chip and an ER1117 chip; the initial input voltage is converted into a plurality of supply voltages by the SM4644 chip and the ER1117 chip.

3. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The network interface unit includes an INTEL 82580 chip; the INTEL 82580 chip converts one PCIE2.0x1 into two SGMIIs and two 1000Base-Ts.

4. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The PCIE to UART unit includes a CH384 chip; the CH384 chip converts two UART signals through one PCIE 2.0X1.

5. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The RS422 serial port unit includes an SM3490 chip; the SM3490 chip converts UART signals into 422 signals for external communication.

6. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The USB interface unit includes a μPD720201 chip; the μPD720201 chip has one PCIe x1 upstream port and four USB3.0 ports and four USB2.0 ports downstream ports.

7. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The audio interface unit includes a CM6533 chip; the CM6533 chip converts one USB2.0 signal into one LINE OUT signal and one MC IN signal.

8. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The PS2 interface unit includes a W83627 chip; the W83627 chip expands two UARTs and one PS2 signal through one LPC bus, and the two UART signals are converted into RS232 signals through the SM3232 interface chip.

9. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The CAN interface unit includes an MCP2515 chip; the MCP2515 chip converts one SPI signal into one CAN signal.

10. The COMe module baseboard compatible with multiple CPUs as claimed in claim 1, characterized in that: The IPMI interface unit includes a GD32F103 chip; the GD32F103 chip communicates with the CPU and power module via the I2C bus to monitor power-on timing and voltage.

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