CN205750414U - A kind of high-sensitive USB interface and mainboard thereof - Google Patents

Abstract

The utility model provides a high-sensitivity USB interface and its main board. The high-sensitivity USB interface includes: a USB keyboard and mouse interface, a USB acceleration circuit and a clock circuit. The USB keyboard and mouse interface and the clock circuit are respectively connected to the USB The acceleration circuit is connected, and the USB keyboard and mouse interface is connected to the host end through the USB acceleration circuit. The utility model uses the single-chip microcomputer of the USB acceleration circuit as the bridge chip of the traditional USB keyboard and mouse low-speed device to perform protocol conversion, and then realizes communication with the host end, increases the bandwidth rate from 12Mbps to 480Mbps, realizes the acceleration function, and greatly improves the USB speed. The convenience of the interface for game players can greatly shorten the response time of game devices, better support and service game devices, effectively improve the game experience of game players, and improve the overall working ability of the motherboard.

Description

A highly sensitive USB interface and its mainboard

technical field

The utility model relates to a USB interface, in particular to a high-sensitivity USB interface and a main board including the high-sensitivity USB interface.

Background technique

Ordinary front USB interface can provide good ease of use during use, but with more and more game peripherals, the requirements for the response speed of USB interface are becoming more and more stringent, and ordinary USB interface is not specially responsible for The detection and speed-up chip cannot seamlessly transmit the response speed required by the game device; moreover, the power supply circuit of the common front USB interface is usually 500mA. A USB interface not only cannot process the data of the game device in time, but the low current of the USB interface is also unable to support and respond to the game device, and it is difficult to play the ability of the professional game device; and the rear USB interface is set on the back of the computer, and the device is on the back Performing frequent operations does not conform to the original design intention, and obviously does not conform to usage habits.

Contents of the invention

The technical problem to be solved by the utility model is to provide a USB interface capable of fast response, aiming at improving the responsiveness of device data and solving the problem of data transmission delay, and also needs to provide a motherboard including the USB interface.

In this regard, the utility model provides a highly sensitive USB interface, including: a USB keyboard and mouse interface, a USB acceleration circuit and a clock circuit, and the USB keyboard and mouse interface and the clock circuit are respectively connected to the USB acceleration circuit. The USB keyboard and mouse interface is connected to the host end through the USB acceleration circuit.

A further improvement of the utility model is that the USB acceleration circuit includes a single-chip microcomputer U32.

A further improvement of the present invention is that the USB acceleration circuit also includes a capacitor C803 and a capacitor C804, the power supply pins of the single-chip microcomputer U32 are respectively connected to the power supply terminal, one end of the capacitor C803 and one end of the capacitor C804, and the capacitor C803 The other end of and the other end of the capacitor C804 are grounded respectively.

A further improvement of the present invention is that the USB acceleration circuit also includes a pull-up resistor R204 and a pull-up resistor R206, the serial data port of the single-chip microcomputer U32 is connected to the power supply terminal through the pull-up resistor R204, and the clock of the single-chip microcomputer U32 The port is connected to the power terminal through the pull-up resistor R206.

A further improvement of the present utility model is that the clock module includes a clock chip U4, a capacitor C809 and a resistor R242, the power port of the clock chip U4, the enable port of the clock chip U4 and one end of the capacitor C809 are connected to the power source, so The ground port of the clock chip U4 and the other end of the capacitor C809 are grounded, and the output port of the clock chip U4 is connected to the microcontroller U32 through a resistor R242.

A further improvement of the present invention is that the output port of the clock chip U4 is connected to the reference clock input port of the single-chip microcomputer U32 through a resistor R242.

The utility model also provides a main board, which includes the above-mentioned high-sensitivity USB interface.

Compared with the prior art, the beneficial effect of the utility model is that the single-chip microcomputer of the USB acceleration circuit is used as the bridge chip of the traditional USB keyboard and mouse low-speed device to perform protocol conversion, and realizes the following on the basis of receiving the instructions of the low-speed USB keyboard and mouse interface. The full speed of USB communicates with the host end, increasing the bandwidth rate from 12Mbps to 480Mbps, realizing the acceleration function, greatly improving the convenience of the USB interface for game players, greatly shortening the response time of game equipment, and better supporting And service game equipment, effectively improve the gaming experience of game players, and improve the overall working ability of the motherboard.

Description of drawings

Fig. 1 is a schematic diagram of the module structure of an embodiment of the utility model;

Fig. 2 is a schematic circuit diagram of an embodiment of the utility model.

detailed description

Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.

As shown in Figure 1, the utility model provides a kind of highly sensitive USB interface, comprises: USB mouse and keyboard interface, USB accelerating circuit and clock circuit, described USB keyboard and mouse interface and clock circuit are connected with described USB accelerating circuit respectively , the USB keyboard and mouse interface is connected to the host through the USB acceleration circuit. The USB keyboard and mouse interface described in this example is a traditional low-speed USB interface for connecting USB devices such as a keyboard and a mouse, such as a USB1.0 or USB1.1 interface.

As shown in Figure 2, the USB acceleration circuit described in this example includes a single-chip microcomputer U32, a capacitor C803, a capacitor C804, a pull-up resistor R204, and a pull-up resistor R206; Connect with one end of the capacitor C804, the other end of the capacitor C803 and the other end of the capacitor C804 are grounded respectively, the power supply pin of the single-chip microcomputer U32 is 1 pin, that is, the VDD5V pin; the serial data of the single-chip microcomputer U32 The port is connected to the power supply terminal through the pull-up resistor R204, and the serial data port of the single-chip microcomputer U32 is 18 pins, that is, the SDA pin; the clock port of the single-chip microcomputer U32 is connected to the power supply terminal through the pull-up resistor R206, and the single-chip microcomputer The clock port of U32 is pin 17, which is the SCL pin. The host end is HOST, and the USB acceleration circuit where the single-chip microcomputer U32 is located is used to convert USB1.1 into USB2.0.

As shown in Figure 2, the clock module described in this example includes a clock chip U4, a capacitor C809 and a resistor R242. The power port of the clock chip U4, the enabling port of the clock chip U4, and one end of the capacitor C809 are connected to the power terminal, so The ground port of the clock chip U4 and the other end of the capacitor C809 are grounded, and the output port of the clock chip U4 is connected to the single-chip microcomputer U32 through a resistor R242; the power port of the clock chip U4 is 4 pins, namely the VDD pin ; The 1 pin of the enabling port of the clock chip U4 is the EN pin; the ground port of the clock chip U4 is 2 pins, that is the GND pin; the output port of the clock chip U4 is 3 pins , that is, the OUT pin; the output port of the clock chip U4 in this example is connected to the reference clock input port of the single-chip microcomputer U32 through a resistor R242.

The existing traditional USB interface uses USB low speed (USB1.1), the theoretical value of the transmission speed is 12Mbps, and the transmission delay increased in the middle of the long cable increases the waiting time for the host device to receive the signal; and this example can realize USB full-speed rate, that is, USB Full Speed (USB2.0), the theoretical transmission rate is 480Mbps, which is 40 times the transmission rate of USB1.1 devices. The USB acceleration in this example is to convert the traditional USB keyboard and mouse low-speed devices through the single-chip microcomputer of the USB acceleration circuit. The rate has been increased from 12Mbps to 480Mbps, realizing the acceleration function.

This example also provides a motherboard, which includes the above-mentioned high-sensitivity USB interface.

In this example, the single-chip microcomputer of the USB acceleration circuit is used as the bridge chip of the traditional USB keyboard and mouse low-speed device to perform protocol conversion. On the basis of receiving the instructions of the low-speed USB keyboard and mouse interface, the communication with the host end is realized at the USB full speed rate, and the bandwidth rate is changed from 12Mbps has been increased to 480Mbps, realizing the acceleration function, greatly improving the convenience of the USB interface for game players, greatly shortening the response time of game devices, better supporting and serving game devices, and effectively improving the game experience of game players , improve the overall working ability of the motherboard.

In this example, in order to meet the needs of gamers for high-sensitivity USB interfaces, a high-sensitivity USB interface is designed to improve the high-sensitivity response of gamers’ equipment and shorten the response time of the equipment; the high-sensitivity USB interface described in this example is different from ordinary The USB interface, the USB interface is specially designed for game players, by adding a USB acceleration circuit to achieve fast response, aiming at improving the response capability of the device data and solving the problem of data transmission delay, the chip with good characteristics is selected to ensure that the game device The connection is fast and stable.

The specific implementations described above are preferred implementations of the present utility model, and are not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to this specific implementation. , The equivalent changes made by the structure are all within the protection scope of the present utility model.

Claims (7)

1. a kind of highly sensitive USB interface, it is characterized in that, comprising: USB keyboard and mouse interface, USB speed-up circuit and clock circuit, described USB keyboard-mouse interface and clock circuit are connected with described USB speed-up circuit respectively, described USB The mouse and keyboard interface is connected to the host end through the USB acceleration circuit. 2. The highly sensitive USB interface according to claim 1, characterized in that, the USB acceleration circuit comprises a single-chip microcomputer U32. 3. The highly sensitive USB interface according to claim 2, characterized in that, the USB acceleration circuit also includes a capacitor C803 and a capacitor C804, and the power supply pin of the single-chip microcomputer U32 is connected to the power supply terminal, one end of the capacitor C803 and the capacitor C803 respectively. One end of the capacitor C804 is connected, and the other end of the capacitor C803 and the other end of the capacitor C804 are respectively grounded. 4. The highly sensitive USB interface according to claim 2, wherein the USB acceleration circuit also includes a pull-up resistor R204 and a pull-up resistor R206, and the serial data port of the single-chip microcomputer U32 passes through the pull-up resistor R204 connected to the power supply terminal, and the clock port of the single-chip microcomputer U32 is connected to the power supply terminal through a pull-up resistor R206. 5. The highly sensitive USB interface according to any one of claims 2 to 4, wherein the clock module includes a clock chip U4, a capacitor C809 and a resistor R242, the power port of the clock chip U4, the clock chip The enable port of U4 and one end of the capacitor C809 are connected to the power supply, the ground port of the clock chip U4 and the other end of the capacitor C809 are grounded, and the output port of the clock chip U4 is connected to the microcontroller U32 through a resistor R242. 6. The high-sensitivity USB interface according to claim 5, wherein the output port of the clock chip U4 is connected to the reference clock input port of the single-chip microcomputer U32 through a resistor R242. 7. A mainboard, characterized in that the mainboard comprises the high-sensitivity USB interface according to any one of claims 1 to 6.