Multi-interface integrated circuit of ordering and selling mainboard

Abstract

The utility model relates to the technical field of integrated circuits, in particular to a multi-interface integrated circuit of a point sale mainboard, a device connector is electrically connected with a USB 2.0 joint and a USB PD quick charge connector, and the USB 2.0 joint is in communication connection with a port concentrator SL2.1 S chip; the port concentrator SL2.1 S chip is provided with a 100M network card chip and a USB two-port concentrator in parallel, and the 100M network card chip is electrically connected with an RJ45 100M network port. According to the utility model, the USB two-port concentrator and the RJ45 100M network port interface are used, so that better anti-interference and anti-aging performance is achieved, compatibility and connection of various peripheral equipment are supported, the USB PD fast charging connector supports PD protocol fast charging and can support more peripheral equipment needing electric power, and a plurality of safety protection mechanisms are adopted, so that the safety of the USB PD fast charging connector is greatly improved. And the phenomenon of overvoltage overload damage caused by incorrect use of the adapter and equipment of the traditional AC power supply is avoided.

Description

Technical Field

[0001] This utility model relates to an integrated circuit, and more particularly to a multi-interface integrated circuit for a point-of-sale motherboard, belonging to the field of integrated circuit technology. Background Technology

[0002] The modular interface of the point-of-sale system is an external device designed specifically for POS cash registers. By expanding the ports of the cash register, the device can be conveniently connected to multiple accessories or external devices (PD fast charging power supply, network cable, mouse, external keyboard, barcode scanner) in one stop.

[0003] This point-of-sale system can be used in the retail and food service industries. By connecting multiple devices (such as barcode scanners, keyboards, etc.) to a single computer, it simplifies device connection and management. For battery-powered devices, it can automatically enumerate and switch between self-powered and externally powered devices.

[0004] USB interfaces offer excellent driver support, especially on modern operating systems, enabling plug-and-play functionality without complex configurations. This simplifies the process of adding and replacing devices. Furthermore, the high data transfer speeds allow for efficient handling of large volumes of transaction data, printing, and other tasks. Fast response from external devices enhances work efficiency, particularly during peak trading periods when data transmission latency is significantly reduced.

[0005] Therefore, it is urgent to improve the multi-interface integrated circuit of the point-of-sale motherboard to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this utility model is to provide a multi-interface integrated circuit for a point-of-sale motherboard, which uses a USB two-port hub and an RJ45 100Mbps Ethernet port interface. It is more unified, more robust and durable, and has better anti-interference and anti-aging performance. It supports compatibility and connection of various peripheral devices. The USB PD fast charging connector supports PD protocol fast charging, which can support more peripheral devices that require power. It also adopts multiple safety protection mechanisms, such as overvoltage protection, electrostatic protection, and surge protection, to avoid overvoltage and overload damage caused by improper use of traditional AC power adapters and devices.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A multi-interface integrated circuit for a point-of-sale motherboard includes a device connector, on which a USB 2.0 connector and a USB PD fast charging connector are electrically connected, and a port hub SL2.1S chip is communicatively connected to the USB 2.0 connector.

[0009] The SL2.1S port hub chip is equipped with a 100Mbps Ethernet card chip and several USB two-port hubs connected in parallel. The 100Mbps Ethernet card chip is electrically connected to an RJ45 100Mbps Ethernet port. The RJ45 100Mbps Ethernet port is electrically connected to a PD protocol chip CH227P and a Charge Type-C power input port through an RF switch. The PD protocol chip CH227P establishes a communication connection with the Charge Type-C power input port through an analog switch chip.

[0010] Preferably, a crystal oscillator is electrically connected to the CKXTAL1 and CKXTAL2 pins of the 100Mbps network card chip, and a capacitor is connected in parallel to the VDD5 pin of the 100Mbps network card chip.

[0011] Preferably, the VDD3 pin of the 100Mbps network card chip is electrically connected to a serial peripheral interface flash memory (SPIFlash), and the GPIO pin of the 100Mbps network card chip is electrically connected to a pull-up resistor.

[0012] Preferably, the LED1 / SPISCK pin of the 100Mbps network card chip is electrically connected to the D2_G- pin of the RJ45 100Mbps network port, the LED0 / SPICSB pin of the 100Mbps network card chip is electrically connected to the D3_Y- pin of the RJ45 100Mbps network port, and the DVDD33 pin of the 100Mbps network card chip is electrically connected to the D4_Y+ pin of the RJ45 100Mbps network port.

[0013] Preferably, the USB PD fast charging connector is electrically connected to an adapter chip, and the adapter is communicatively connected to a flat panel connector chip.

[0014] Preferably, the USB PD fast charging connector is electrically connected to an adapter chip and electrically connected to a USB current-limited current limiting circuit.

[0015] Preferably, the adapter chip is electrically connected to a power output circuit, and the power output circuit is electrically connected to a power input circuit.

[0016] Preferably, the USB two-port hub is electrically connected to the flat panel connector chip.

[0017] This utility model has at least the following beneficial effects:

[0018] 1. Utilizing a USB two-port hub and an RJ45 100Mbps Ethernet port, it offers greater uniformity, a more robust and durable design, and better anti-interference and anti-aging performance. It supports compatibility and connection of various peripheral devices. The USB PD fast charging connector supports PD protocol fast charging, enabling it to support more power-demanding peripherals. It also employs multiple safety protection mechanisms, such as overvoltage protection, electrostatic discharge protection, and surge protection, avoiding overvoltage and overload damage caused by improper use of traditional AC power adapters and devices.

[0019] 2. The device connectors are electrically connected to a USB 2.0 connector and a USB PD fast charging connector. The USB 2.0 connector is connected to a port hub SL2.1S chip for communication. The adapter chip is electrically connected to a power output circuit, and the power output circuit is electrically connected to a power input circuit. The USB two-port hub is electrically connected to the flat connector chip, which helps to quickly locate and repair faults when problems occur without needing to analyze the entire system in depth. Due to the modularity and replaceability of the system, faulty modules can be replaced individually without replacing the entire system, which not only saves time but also reduces maintenance costs. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is the electrical schematic diagram of this utility model;

[0022] Figure 2 This is the circuit diagram of the 100Mbps network card chip of this utility model;

[0023] Figure 3 This is a circuit diagram of the crystal oscillator of this utility model;

[0024] Figure 4 This is a circuit diagram of the serial peripheral interface flash memory (SPIFlash) of this utility model;

[0025] Figure 5 This is the circuit diagram of the RJ45 100Mbps Ethernet port of this utility model;

[0026] Figure 6 This is a circuit diagram of the adapter chip of this utility model;

[0027] Figure 7 This is a circuit diagram of the flat panel connector chip of this utility model;

[0028] Figure 8 This is a circuit diagram of the USB current-limited current limiting circuit of this utility model;

[0029] Figure 9 This is the power output circuit diagram of this utility model;

[0030] Figure 10 This is the power input circuit diagram of this utility model;

[0031] Figure 11 This is the circuit diagram of the USB two-port hub of this utility model.

[0032] In the diagram, 1 is the device connector; 2 is the USB 2.0 connector; 3 is the USB PD fast charging connector; 4 is the SL2.1S port hub chip; 5 is the 100Mbps Ethernet chip; 6 is the USB two-port hub; 7 is the RJ45 100Mbps Ethernet port; 8 is the CH227P PD protocol chip; and 9 is the Charge Type-C power input port. Detailed Implementation

[0033] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0034] like Figures 1-11 As shown, the multi-interface integrated circuit of the point-of-sale motherboard provided in this embodiment includes a device connector 1, a USB 2.0 connector 2 and a USB PD fast charging connector 3 electrically connected to the device connector 1, a port hub SL2.1S chip 4 communicatively connected to the USB 2.0 connector 2, a power output circuit electrically connected to the adapter chip, a power input circuit electrically connected to the power output circuit, and a USB two-port hub 6 electrically connected to the flat connector chip. This facilitates quick location and repair of faults when problems occur without the need for in-depth analysis of the entire system. Due to the disassembly and replaceability of the modular system, faulty modules can be replaced individually without replacing the entire system, which not only saves time but also reduces maintenance costs.

[0035] The SL2.1S port hub chip 4 has a 100Mbps Ethernet card chip 5 and several USB two-port hubs 6 connected in parallel. The 100Mbps Ethernet card chip 5 is electrically connected to an RJ45 100Mbps Ethernet port 7. The RJ45 100Mbps Ethernet port 7 is electrically connected to a PD protocol chip CH227P8 and a Charge Type-C power input port 9 via an RF switch. The PD protocol chip CH227P8 is connected to the Charge... The Type-C power input port 9 establishes a communication connection. The LED1 / SPISCK pin of the 100Mbps Ethernet chip 5 is electrically connected to the D2_G- pin of the RJ45 100Mbps Ethernet port 7. The LED0 / SPICSB pin of the 100Mbps Ethernet chip 5 is electrically connected to the D3_Y- pin of the RJ45 100Mbps Ethernet port 7. The DVDD33 pin of the 100Mbps Ethernet chip 5 is electrically connected to the D4_Y+ pin of the RJ45 100Mbps Ethernet port 7. Using interfaces such as the USB two-port hub 6 and the RJ45 100Mbps Ethernet port 7, the design is more unified, more robust and durable, and has better anti-interference and anti-aging performance. It supports compatibility and connection of various peripheral devices. The USB PD fast charging connector 3 supports PD protocol fast charging, which can support more peripherals that require power. It also adopts multiple safety protection mechanisms, such as overvoltage protection, electrostatic protection, and surge protection, to avoid overvoltage and overload damage caused by improper use of traditional AC power adapters and devices.

[0036] Furthermore, such as Figure 2 and Figure 5 As shown, the CKXTAL1 and CKXTAL2 pins of the 100Mbps network card chip 5 are electrically connected to a crystal oscillator, which generates a stable and accurate clock signal through the piezoelectric effect to support the normal operation of digital circuits, communication systems, sensors and other devices. When selecting a chip, factors such as frequency stability, temperature characteristics, power consumption, and vibration resistance must be comprehensively considered. Optimization measures, including load capacitance matching, power supply filtering, and grounding design, should be implemented to ensure the reliability and stability of system timing. A capacitor is connected in parallel to the VDD5 pin of the 100Mbps Ethernet chip 5, and a serial peripheral interface flash memory (SPIFlash) is electrically connected to the VDD3 pin. SPIFlash is a non-volatile memory, meaning data is not lost after power failure. It achieves full-duplex synchronous transmission through four lines: SCLK, MOSI, MISO, and CS, providing high data transmission rates to meet real-time requirements. Utilizing a single memory cell reduces the risk of errors and makes it more suitable for storing critical data compared to NAND flash memory. Pull-up resistors are electrically connected to the GPIO pins of the 100Mbps Ethernet chip 5. In electronic circuits, resistors connect signal pins to high levels (such as VCC), serving as crucial passive components. Their core function is to stabilize signal states, enhance driving capabilities, and optimize circuit timing.

[0037] Furthermore, such as Figure 8As shown, the USB PD fast charging connector 3 is electrically connected to an adapter chip, and the adapter has a communication connection to a flat panel connector chip. The USB PD fast charging connector 3 is also electrically connected to the adapter chip, which in turn is connected to a USB current-limited circuit. While USB current-limited circuits typically use a 5V power supply, different devices have varying current requirements. The current-limiting circuit limits the current to a safe range, preventing damage to the device due to short circuits, overloads, or poor design. For example, when the current exceeds a set threshold, the current-limiting circuit intervenes, reducing or cutting off the current flowing to the device, ensuring the stability and safety of the entire system. This is crucial for extending the lifespan of USB devices, preventing data corruption, and avoiding fire hazards.

[0038] like Figures 1-11 As shown, the principle of the multi-interface integrated circuit of the point-of-sale motherboard provided in this embodiment is as follows:

[0039] The adapter chip is electrically connected to the power output circuit, and the power output circuit is electrically connected to the power input circuit. The USB two-port hub 6 is electrically connected to the flat connector chip, which helps to quickly locate and repair faults when problems occur without having to analyze the entire system in depth. Due to the modularity and replaceability of the system, faulty modules can be replaced individually without replacing the entire system, which not only saves time but also reduces maintenance costs.

[0040] Using interfaces such as a USB two-port hub (6) and an RJ45 100Mbps Ethernet port (7), the design is more unified, more robust and durable, and has better anti-interference and anti-aging performance. It supports compatibility and connection of various peripheral devices. The USB PD fast charging connector (3) supports PD protocol fast charging, which can support more peripherals that require power. It also adopts multiple safety protection mechanisms, such as overvoltage protection, electrostatic protection, and surge protection, to avoid overvoltage and overload damage caused by improper use of traditional AC power adapters and devices.

[0041] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0042] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0043] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A multi-interface integrated circuit for a point-of-sale motherboard, comprising a device connector (1), characterized in that, The device connector (1) is electrically connected to a USB 2.0 connector (2) and a USB PD fast charging connector (3), and the USB 2.0 connector (2) is communicatively connected to a port hub SL2.1S chip (4); The port hub SL2.1S chip (4) is equipped with a 100Mbps network card chip (5) and several USB two-port hubs (6) connected in parallel. The 100Mbps network card chip (5) is electrically connected to an RJ45 100Mbps network port (7). The RJ45 100Mbps network port (7) is electrically connected to a PD protocol chip CH227P (8) and a Charge Type-C power input port (9) through an RF switch. The PD protocol chip CH227P (8) establishes a communication connection with the Charge Type-C power input port (9) through an analog switch chip.

2. The multi-interface integrated circuit of a point-of-sale motherboard according to claim 1, characterized in that: A crystal oscillator is electrically connected to the CKXTAL1 and CKXTAL2 pins of the 100Mbps network card chip (5), and a capacitor is connected in parallel to the VDD5 pin of the 100Mbps network card chip (5).

3. The multi-interface integrated circuit of a point-of-sale motherboard according to claim 1, characterized in that: The VDD3 pin of the 100Mbps network card chip (5) is electrically connected to a serial peripheral interface flash memory (SPI Flash), and the GPIO pin of the 100Mbps network card chip (5) is electrically connected to a pull-up resistor.

4. The multi-interface integrated circuit of a point-of-sale motherboard according to claim 1, characterized in that: The LED1 / SPISCK pin of the 100Mbps network card chip (5) is electrically connected to the D2_G- pin of the RJ45 100Mbps network port (7), the LED0 / SPICSB pin of the 100Mbps network card chip (5) is electrically connected to the D3_Y- pin of the RJ45 100Mbps network port (7), and the DVDD33 pin of the 100Mbps network card chip (5) is electrically connected to the D4_Y+ pin of the RJ45 100Mbps network port (7).

5. A multi-interface integrated circuit for a point-of-sale motherboard according to claim 1, characterized in that: The USB PD fast charging connector (3) is electrically connected to an adapter chip, and the adapter is communicatively connected to a flat panel connector chip.

6. The multi-interface integrated circuit of a point-of-sale motherboard according to claim 1, characterized in that: The USB PD fast charging connector (3) is powered on and connected to an adapter chip and a USB current-limited current limiting circuit.

7. A multi-interface integrated circuit for a point-of-sale motherboard according to claim 6, characterized in that: The adapter chip is electrically connected to a power output circuit, and the power output circuit is electrically connected to a power input circuit.

8. A multi-interface integrated circuit for a point-of-sale motherboard according to claim 1, characterized in that: The USB two-port hub (6) is electrically connected to the flat panel connector chip.

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