A USB2.0 / 3.0 HUB with extremely high frequency microwave isolation

Abstract

A USB2.0 / 3.0 HUB using extremely high frequency microwave isolation, which includes a USB3.0 microwave transmitter and a USB3.0 microwave receiver. It uses extremely high frequency EHF (Extremely High Frequency) with a frequency range of 60GHz. The microwave communication between the two can be automatically negotiated through custom communication rules. The USB3.0 HUB at the USB3.0 microwave receiver can be simultaneously connected to four super high-speed USB3.0 terminal peripherals. During the USB3.0 microwave communication process, only the received USB3.0 electrical signals are converted from electrical to microwave and then back to electrical. Therefore, the USB3.0 signal is transparent during transmission using microwave transmission equipment, and while supporting USB3.0 devices, it can directly be backward compatible with USB2.0 / 1.1 / 1.0 devices.

Description

Technical Field

[0001] The present invention relates to the field of USB3.0 communication, and particularly to the technical field of isolated communication between various USB3.0 terminal devices and a computer. Specifically, it refers to a USB2.0 / 3.0 HUB using extremely high frequency microwave isolation.

[0002] The present invention also relates to an automatic negotiation method for microwave communication between a USB3.0 microwave transmitting end and a USB3.0 microwave receiving end. Background Art

[0003] As the requirements for data exchange speed in industrial electronic devices are getting higher and higher, more and more industrial devices have started

[0004] to use USB interfaces, and the requirements for communication reliability are also getting higher and higher. However, the existing USB communication circuits have poor resistance to interference from the operating environment and are extremely vulnerable to static electricity and electromagnetic wave interference in the industrial environment. Moreover, due to the complexity of the industrial environment, the interface levels of the host side and the device side may be different, and after connection, the devices on both sides may not work properly. In addition, interference on either side will be transmitted to the host / device side along the USB interface, which is likely to cause serious damage to the entire system. Currently, the power supply and signal isolation protection devices widely used at home and abroad are mainly divided into three types: optoelectronic isolation type, transformer isolation type, and capacitor isolation type.

[0005] At present, several foreign semiconductor companies have provided solutions for the isolation of USB2.0 signals, but they are expensive, the scheme design is complex, and it is extremely difficult to promote them to practical applications. Moreover, with the significant improvement in the transmission speed of USB3.0, which is based on a full-duplex data transmission protocol, the theoretical transmission rate is as high as 5Gbps (i.e., 625MB / second), and the actual data transmission rate will also be as high as 3.2Gbps (i.e., 400MB / second), which is nearly 10 times higher than that in the USB2.0 era. Now, the latest USB3.1 Gen2 standard has further increased the transmission rate to 10Gbps. Therefore, the transmission distance of data has encountered unprecedented challenges.

[0006] For example, Chinese Patent Application No. 201410572419.4 provides a full-speed USB3.0 interface isolation protection device. Although the transmission speed of this device's transformer isolation has been increased to 5Gbps compared with optoelectronic isolation, due to the use of inductive elements, there is a risk of voltage mutual inductance coupling, and it cannot fully achieve the safety isolation degree required in the medical field.

[0007] In the medical field, due to safety considerations, electrical isolation of 4000V is often required between measurement devices and computers. In the past, some transformers could be used for coupled isolation in USB2.0 and USB3.0. However, as the transmission rate has increased to 5Gbps - 10Gbps, the traditional transformer-coupled isolation scheme can no longer adapt to the transmission of 5Gbps - 10Gbps. Moreover, there are still certain defects in electrical isolation with transformer coupling. Electrical isolation is not as good as optoelectronic coupling and microwave coupling. Both optoelectronic coupling and microwave coupling can achieve complete electrical isolation, but the optoelectronic coupling method has a slower rate, generally only 12Mbps. In the field of microwave communication, in the frequency range of 30 - 300GHz, the electromagnetic wave signal with a wavelength shorter than that of super high frequency (SHF) is what I call extremely high frequency EHF (Extremely High Frequency), with a wavelength ranging from 1mm to 10mm, and it is mainly applied to meteorological radars, space communications, radio astronomy, etc. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a USB2.0 / 3.0 HUB that uses extremely high frequency microwaves for isolation and supports isolated communication between various USB2.0 and USB3.0 terminal devices and computers, which can achieve safe electrical isolation connections between various USB3.0 / USB2.0 / 1.0 / 1.1 terminal devices and computer hosts.

[0009] Technical solution adopted by the present invention: A USB2.0 / 3.0 HUB using extremely high frequency microwave isolation, including a USB3.0 microwave transmitting end and a USB3.0 microwave receiving end, adopting extremely high frequency EHF (Extremely High Frequency) with a frequency range of 60 GHz. The non-contact direct signal coupling distance of the chip can reach 5 cm. If other waveguide materials are used, the transmission distance can be extended by several meters to more than ten meters, and the rate can be increased to 10 Gbps. The microwave communication between the two can be automatically negotiated through custom communication rules. Inside the USB3.0 HUB main control chip of the USB3.0 microwave receiving end, there is a USB2.0 acceleration engine, which can convert the USB2.0 signals of all downstream ports into USB3.0 signals, and can use the USB3.0 ultra-high speed signal to simultaneously transmit USB3.0 / USB2.0 / 1.0 / 1.1 data. All four ports of this USB3.0 HUB main control chip can be connected to USB2.0 or USB3.0 terminal peripherals, and USB2.0 and USB3.0 devices can be mixed, that is, it is downward compatible with USB2.0 / 1.1 / 1.0 devices; the data transmitted by the technical solution adopted by the present invention is in the native USB3.0 data format. During the USB3.0 microwave communication process, in order to ensure compatibility and general applicability, the native USB3.0 data sent by the USB3.0 host controller, USB3.0 HUB main control chip and USB3.0 terminal device will not be converted into other formats and re-encoded and decoded for transmission. Only the received USB3.0 electrical signal is converted from electrical to microwave and then to electrical. The microwave transmission device will not add any additional data to the data stream. Therefore, the USB3.0 signal is transparent during transmission using the microwave transmission device, and all terminal peripherals compliant with the USB3.0 / USB2.0 / 1.0 / 1.1 standards can be normally connected.

[0010] Correspondingly, another technical problem to be solved by the present invention is to provide an automatic negotiation method for microwave communication between the USB3.0 microwave transmitting end and the USB3.0 microwave receiving end.

[0011] According to the above solution, the USB3.0 microwave transmitting end includes a USB3.0 upstream interface, a USB3.0 EHF transceiver, an MCU control unit, an LED indication circuit, a management interface circuit, a detection circuit, and a power supply unit.

[0012] The USB3.0 upstream interface is used to connect the USB3.0 host controller of the computer host.

[0013] Preferably, the USB3.0 EHF transceiver consists of KSS104-TX and KSS104-RX. The KSS104 series chips contain an EHF microwave transmitter and an EHF microwave receiver inside, and can be configured into a transmission mode or a reception mode as needed. The working rate of the KSS104 series chips can reach 6Gbps, and by replacing with other chip models of the same type, it can reach 12Gbps. Therefore, it can meet the 10Gbps rate required by USB3.1 Gen2. The KSS104 series chips integrate an electromagnetic waveguide inside, so there is no need to externally connect a microwave antenna, and the circuit is greatly simplified. The chip area is only 5mm x 5mm. KSS104-TX is used to convert the USB3.0 electrical signal output by the USB3.0 host controller of the computer into an extremely high-frequency microwave signal, and KSS104-RX is used to convert the received extremely high-frequency microwave signal into a USB3.0 electrical signal and send it to the signal input end of the USB3.0 host controller of the computer.

[0014] The MCU control unit is used to control the handshake connection between the USB3.0 microwave transmission end and the USB3.0 microwave reception end and the USB3.0 host controller of the computer, as well as chip reset, to control the power supply unit to achieve power supply control and fault diagnosis of the USB3.0 terminal device, and to send control instructions of the USB3.0 terminal device, and combines with the management interface to achieve digital diagnostic management of the USB3.0 microwave transmission end and the USB3.0 microwave reception end.

[0015] The LED indication circuit is used to indicate information such as communication status and fault conditions.

[0016] The management interface circuit is connected to an external USB2.0 port to implement the conversion of USB2.0 to an RS-232 interface. The RS-232 interface is connected to an RS-232 serial port of the MCU control unit to achieve digital diagnostic management of the USB3.0 microwave transmission end and the USB3.0 microwave reception end at the computer host end.

[0017] In the detection circuit, there is a pair of Hall sensors and magnetic elements, and a pair of opto-couplers for receiving and emitting light at the USB3.0 microwave transmission end. Bidirectional communication can be carried out between the USB3.0 microwave transmission end and the USB3.0 microwave reception end through the opto-couplers, and the Hall sensors and magnetic elements are used to establish the physical connection between the USB3.0 microwave transmission end and the USB3.0 microwave reception end. When the magnetic element of the USB3.0 microwave reception end approaches the Hall sensor of the USB3.0 microwave transmission end, the Hall sensor will output a fixed level signal to determine that the USB3.0 microwave transmission end and the USB3.0 microwave reception end are close to each other within the effective range, and thus both will initiate a connection request based on this signal.

[0018] The power supply unit can realize automatic switching between USB 3.0 interface power supply and external power supply, and provide power for the USB 3.0 EHF transceiver, MCU control unit, LED indication circuit, management interface, detection circuit, USB 3.0 microwave receiving end and its USB 3.0 terminal device.

[0019] According to the above solution, the USB 3.0 microwave receiving end includes a USB 3.0 downstream interface, a USB 3.0 HUB main control chip, a USB 3.0 EHF transceiver, an MCU control unit, an LED indication circuit, a detection circuit, and a power supply unit.

[0020] The USB 3.0 downstream interface has at least one port for connecting to a USB 3.0 terminal device.

[0021] Preferably, the USB 3.0 HUB main control chip is FL6000 produced by Fresco Logic Company, and FL6000 adopts the unique F-One of Fresco Logic Company TMThe technology enables the USB2.0 and USB3.0 data of the downstream ports to be transmitted through the USB3.0 SuperSpeed differential data lines (SSTX+ / - and SSRX+ / -) of the upstream port, without the need to add an external USB2.0 to USB3.0 conversion chip. The overall circuit becomes simpler and has better compatibility. While supporting USB3.0 devices, it can directly be backward compatible with USB2.0 / 1.1 / 1.0 devices. The FL6000 chip contains a USB2.0 acceleration engine (USB2.0 to USB3.0 Translators) inside, which can convert all the USB2.0 signals of the downstream ports into USB3.0 signals. Finally, the USB3.0 signals of all the downstream interfaces are transmitted with the computer host's USB3.0 main control chip through the SuperSpeed HUB controller and routing engine (SuperSpeed HUB Controller and Routing) inside the USB3.0 HUB main control chip. Therefore, USB2.0 and USB3.0 data can be transmitted simultaneously through the USB3.0 SuperSpeed differential data lines using optical fibers. The upstream port of the USB3.0 HUB main control chip is connected to the USB3.0 EHF transceiver at the sending end. The four ports of the USB3.0 HUB main control chip at the USB3.0 microwave receiving end can all support USB3.0 / USB2.0 / 1.1 / 1.0 terminal peripherals, such as standard USB peripherals like USB2.0 styli, USB touchscreens, USB mice, USB keyboards, USB3.0 industrial printers, USB3.0 cameras, USB3.0 external hard drives, USB3.0 pen drives, etc. USB2.0 and USB3.0 devices can be used mixedly.

[0022] The USB3.0 EHF transceiver consists of KSS104-TX and KSS104-RX. The KSS104 series of chips contain an EHF microwave transmitter and an EHF microwave receiver inside, and can be configured into a transmission mode or a reception mode as needed. The working rate of the KSS104 series of chips can reach 6Gbps, and by replacing with other chip models of the same type, it can reach 12Gbps. Therefore, it can meet the 10Gbps rate required by USB3.1 Gen2. The KSS104 series of chips integrate an electromagnetic waveguide inside, so there is no need to externally connect a microwave antenna, and the circuit is greatly simplified. The chip area is only 5mm x 5mm. KSS104-TX is used to convert the USB3.0 electrical signal output from the upstream interface of the USB3.0 HUB main control chip into an extremely high-frequency microwave signal, and KSS104-RX is used to convert the received extremely high-frequency microwave signal into a USB3.0 electrical signal and send it to the signal input end of the upstream interface of the USB3.0 HUB main control chip.

[0023] The MCU control unit is used to control the handshake connection between the USB3.0 microwave transmitter and the USB3.0 microwave receiver and the USB3.0 host controller of the computer host, as well as chip reset. It is used to control the power supply unit to achieve power supply control and fault diagnosis of the USB3.0 terminal device. It is used to send control instructions of the USB3.0 terminal device, and combines with the management interface to achieve digital diagnosis management of the USB3.0 microwave transmitter and the USB3.0 microwave receiver.

[0024] The LED indication circuit is used to indicate information such as communication status and fault conditions.

[0025] The management interface circuit is connected to an external USB2.0 port to implement the conversion from USB2.0 to an RS-232 interface. The RS-232 interface is connected to an RS-232 serial port of the MCU control unit to achieve digital diagnosis management of the USB3.0 microwave transmitter and the USB3.0 microwave receiver at the computer host end.

[0026] In the detection circuit, there is a pair of Hall sensors and magnetic elements, and a pair of optocouplers for receiving and emitting in the USB3.0 microwave receiver. Bidirectional communication can be carried out between the USB3.0 microwave transmitter and the USB3.0 microwave receiver through the optocoupler elements, and the Hall sensors and magnetic elements are used to establish the physical connection between the USB3.0 microwave transmitter and the USB3.0 microwave receiver. When the magnetic element of the USB3.0 microwave receiver approaches the Hall sensor of the USB3.0 microwave transmitter, the Hall sensor will output a fixed level signal to determine that the USB3.0 microwave transmitter and the USB3.0 microwave receiver are close to each other within the effective range, so that both will initiate a connection request based on this signal.

[0027] The power supply unit provides power for the USB3.0 EHF transceiver, the MCU control unit, the LED indication circuit, the detection circuit, and the USB3.0 terminal device.

[0028] The automatic negotiation method for microwave communication between the USB3.0 microwave transmitter and the USB3.0 microwave receiver refers to a method of solving the problem of establishing a correct communication link between the USB3.0 terminal device and the computer host again after the USB3.0 microwave transmitter and the USB3.0 microwave receiver are separated from each other, and the computer is powered on, shut down, or restarted, through single-chip microcomputer programming technology and formulating relevant communication rules.

[0029] USB3.0 microwave communication is a full-duplex two-way communication. If the USB3.0 microwave transmitter and the USB3.0 microwave receiver are separated from each other, the USB3.0 HUB main control chip of the computer host and the remote USB3.0 microwave receiver needs to re-establish a connection. At this time, both parties will re-initiate a low-speed LFPS signal for handshake connection to determine the connection status. However, if the USB3.0 HUB main control chip of the USB3.0 microwave receiver has not exited the super-high-speed link state at this time, the USB3.0 main controller connected to the USB3.0 microwave transmitter receives not LFPS data signals but super-high-speed data packets, which will lead to negotiation failure, resulting in the port of the USB3.0 main controller of the computer connected to this USB3.0 microwave transmitter crashing, and thus the USB3.0 HUB main control chip and the external USB3.0 terminal device of the USB3.0 microwave receiver cannot be recognized.

[0030] During the communication process between the USB3.0 microwave transmitter and the USB3.0 microwave receiver, the computer host often shuts down, restarts, or the computer host is restarted after being shut down for a long time. In this case, a serious problem will be faced: when the computer host re-enters the operating system, it often occurs that the USB3.0 microwave transmitter and the USB3.0 microwave receiver fail to connect to the computer host. The computer host may prompt that the USB3.0 device is compliant but cannot be linked, or there is no linking action at all. The reason for this problem is that after the computer host exits the system, the communication status of the USB3.0 microwave transmitter and the USB3.0 microwave receiver does not enter the LFPS negotiation state but remains in the normal super-high-speed link state. When the computer host re-enters the system, the USB3.0 main controller of the computer host should be in a low-speed communication mode with the USB3.0 microwave receiver. However, in fact, the USB3.0 main controller of the computer host first receives super-high-speed data packets sent by the USB3.0 microwave transmitter, resulting in negotiation failure between the two, and thus the computer host cannot find all the USB3.0 terminal devices externally connected to the USB3.0 main controller.

[0031] The present invention hereby stipulates an automatic negotiation method for microwave communication between the USB3.0 microwave transmitter and the USB3.0 microwave receiver, as shown in the following items 1-6.

[0032] 1. At any time, the microwave signal receiver of the USB3.0 microwave transmitter always receives the microwave signal before the microwave signal receiver of the USB3.0 microwave receiver; after the connection of the microwave signal receiver of the USB3.0 microwave transmitter is interrupted, the MCU control unit issues a control instruction to keep the microwave signal transmitter of the USB3.0 microwave transmitter in a prohibited transmission state. After the microwave signal receiver of the USB3.0 microwave receiver fails to receive the microwave signal, it outputs a low-level status indication signal Receive Ready to the RX_RDY input pin of the MCU control unit at the receiving end. The MCU control unit issues a control instruction to disconnect the upstream interface link of the USB3.0 HUB main control chip, and the USB3.0 HUB main control chip enters the standby state to ensure that the USB3.0 HUB main control chip does not send out super-high-speed data packets, but the microwave signal transmitter of the USB3.0 microwave receiver is always in the transmission state.

[0033] 2. After the USB3.0 microwave transmitter and the USB3.0 microwave receiver are separated, the physical connection detection circuits of both send out control signals to put the USB3.0 microwave transmitter and the USB3.0 microwave receiver in the power-off state. The MCU control unit issues a control instruction according to the output signal of the detection circuit to interrupt the connection between the USB3.0 upstream interface of the USB3.0 microwave transmitter and the USB3.0 main controller link of the computer host.

[0034] 3. When the USB3.0 microwave transmitter and the USB3.0 microwave receiver re-establish the physical connection, the physical connection detection circuits of both send out control signals to put the USB3.0 microwave transmitter and the USB3.0 microwave receiver in the power-on state. The microwave signal receiver of the USB3.0 microwave transmitter receives the microwave signal sent by the USB3.0 microwave receiver, and the microwave signal receiver sends out a status indication signal Receive Ready to the RX_RDY of the MCU control unit at the sending end. The MCU control unit issues a control signal to enable the microwave signal transmitter of the USB3.0 microwave transmitter. The microwave signal transmitter of the USB3.0 microwave transmitter sends a link initialization signal to the USB3.0 microwave receiver. After the microwave signal receiver of the USB3.0 microwave receiver receives the microwave signal, it outputs a high-level status indication signal Receive Ready to the RX_RDY of the MCU control unit at the receiving end. The MCU control unit issues a VBUS_DET enable signal to the USB3.0 HUB main control chip, so that the USB3.0 HUB main control chip enters the online connection state. When the USB3.0 HUB main control chip receives the LFPS negotiation signal sent by the USB3.0 main control chip of the computer host, it will return the corresponding LFPS negotiation signal to the USB3.0 main control chip of the computer host until the link connection is successful.

[0035] 4. When powered by an external power supply, if the data cable between the USB3.0 microwave transmitter and the USB3.0 host controller chip of the computer host is unplugged, the MCU control unit of the USB3.0 microwave transmitter sends an instruction to the power supply unit to put the microwave signal transmitter at the transmitting end in a prohibited transmission state, and at the same time cuts off the power supply of the USB3.0 microwave receiver to reduce power consumption; when the data cable connected to the computer host is reconnected and the computer host is in the powered-on state and the USB3.0 port is powered normally, the MCU control unit of the USB3.0 microwave transmitter sends an instruction to the power supply unit to restore the power supply of the USB3.0 microwave receiver, and the microwave signal transmitter at the USB3.0 microwave receiver sends a link initialization signal.

[0036] 5. If the USB3.0 terminal device at the USB3.0 microwave receiver is not working properly, the computer host can send an instruction to the MCU control unit at the transmitting end through the management interface. The MCU control unit at the transmitting end transfers the instruction to the MCU control unit at the receiving end through the optocoupler circuit. Further, the MCU control unit at the receiving end sends a port power status detection instruction to the power supply unit at the receiving end through the power management PM_OUT signal output pin. If there is no current overload, a port power restart instruction is issued, so that the USB3.0 terminal device performs a cold start.

[0037] 6. In the two cases where the microwave transmitting chip times out in input signal detection and the microwave receiving chip times out in input microwave signal detection, the chips will enter the standby state. If the input signal of the microwave transmitting chip is detected again, it will immediately exit the standby state and enter the active state; if the input microwave signal of the microwave receiving chip is detected again, it will immediately exit the standby state and enter the active state.

[0038] The compatibility problems in the use process can be well solved by the above methods.

[0039] The beneficial effects of the present invention are as follows: It provides a USB3.0 HUB that uses extremely high-frequency microwaves for isolation at low cost and supports isolated communication between a variety of USB3.0 terminal devices and a computer. The coupling distance can reach 5 cm. Due to the absence of the self-inductance effect of transformer coupling, it has obvious advantages in the field of high-voltage signal isolation applications. Since complete electrical isolation is achieved, for applications such as USB3.0 endoscopes, it has higher safety compared to other methods. Moreover, it can connect a variety of USB3.0 terminal devices to the host, and the operator can perform diagnostic operations on the USB3.0 terminal devices through the management interface. The data transmitted by the present invention is in the native USB3.0 data format, and it will not convert the native USB3.0 data sent by the USB3.0 host controller, the USB3.0 HUB main control chip, and the USB3.0 terminal devices into other formats, re-encode and decode it, and then transmit it. Therefore, its transmission is transparent, and all terminal peripherals that comply with the USB3.0 standard can be normally connected. While extending the USB3.0 transmission distance, the present invention also has the advantages of no electromagnetic leakage in the transmission channel and anti-electromagnetic interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is the system application principle block diagram of the present invention.

[0041] Figure 2 is the principle block diagram of the USB3.0 microwave transmitter of the present invention.

[0042] Figure 3 is the principle block diagram of the KSS104-TX chip of the USB3.0 microwave transmitter of the present invention.

[0043] Figure 4 is the principle block diagram of the KSS104-RX chip of the USB3.0 microwave transmitter of the present invention.

[0044] Figure 5 is the MCU control unit of the USB3.0 microwave transmitter of the present invention.

[0045] Figure 6 is the power supply unit of the USB3.0 microwave transmitter of the present invention.

[0046] Figure 7 is the detection circuit of the USB3.0 microwave transmitter of the present invention.

[0047] Figure 8 is the management interface of the USB3.0 microwave transmitter of the present invention.

[0048] Figure 9 is the principle block diagram of the USB3.0 microwave receiver of the present invention.

[0049] Figure 10It is the principle block diagram of the USB3.0 microwave receiving end KSS104-TX chip of the present invention.

[0050] Figure 11 It is the principle block diagram of the USB3.0 microwave receiving end KSS104-RX chip of the present invention.

[0051] Figure 12 It is the principle block diagram of the USB3.0 HUB main control chip of the USB3.0 microwave receiving end of the present invention.

[0052] Figure 13 It is the MCU control unit of the USB3.0 microwave receiving end of the present invention.

[0053] Figure 14 It is the power supply unit of the USB3.0 microwave receiving end of the present invention.

[0054] Figure 15 It is the detection circuit of the USB3.0 microwave receiving end of the present invention. Detailed implementation manners

[0055] To better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the part of the circuit structure related to the present invention rather than all of it is shown in the accompanying drawings.

[0056] A USB2.0 / 3.0 HUB using extremely high frequency microwave isolation, comprising a USB3.0 microwave transmitting end and a USB3.0 microwave receiving end, adopting extremely high frequency EHF (Extremely High Frequency) with a frequency range of 60 GHz. The non-contact direct signal coupling distance of the chip can reach 5 cm. If other waveguide materials are used, the transmission distance can be extended by several meters to more than ten meters, and the rate can be increased to 10 Gbps. The microwave communication between the two can be automatically negotiated through custom communication rules. Inside the USB3.0 HUB main control chip at the USB3.0 microwave receiving end, there is a USB2.0 acceleration engine, which can convert the USB2.0 signals of all downstream ports into USB3.0 signals, and can use the USB3.0 ultra-high speed signal to simultaneously transmit USB3.0 / USB2.0 / 1.0 / 1.1 data. The four ports of this USB3.0 HUB main control chip can all be connected to USB2.0 or USB3.0 terminal peripherals, and USB2.0 and USB3.0 devices can be used in combination, that is, it is downward compatible with USB2.0 / 1.1 / 1.0 devices; the data transmitted by the technical solution adopted in the present invention is in the native USB3.0 data format. During the USB3.0 microwave communication process, in order to ensure compatibility and general applicability, the native USB3.0 data sent by the USB3.0 host controller, USB3.0 HUB main control chip, and USB3.0 terminal device will not be converted into other formats and re-encoded and decoded for transmission. Only the received USB3.0 electrical signal is converted from electrical to microwave and then back to electrical. The microwave transmission device will not add any additional data to the data stream. Therefore, the USB3.0 signal is transparent during transmission using the microwave transmission device, and all terminal peripherals compliant with the USB3.0 / USB2.0 / 1.0 / 1.1 standards can be normally connected.

[0057] Refer to Figure 1 As shown, a USB2.0 / 3.0 HUB using extremely high frequency microwave isolation, comprising a USB3.0 microwave transmitting end and a USB3.0 microwave receiving end. The USB3.0 microwave transmitting end consists of an EHF transceiver 2, a control circuit 4, and a power supply circuit 3; the USB3.0 microwave receiving end consists of a USB3.0 downstream interface 5, a USB3.0 HUB main control chip 6, an EHF transceiver 7, a control circuit 8, and a power supply circuit 9.

[0058] The USB3.0 electrical signal output by the USB3.0 host controller 1 of the computer host is converted into an extremely high frequency microwave signal by the internal microwave transmission circuit TX of the EHF transceiver 2 at the USB3.0 microwave transmitting end and transmitted to the microwave receiving end RX of the USB3.0 EHF transceiver 7 at the USB3.0 microwave receiving end; the microwave receiving end RX of the EHF transceiver 2 at the USB3.0 microwave transmitting end converts the extremely high frequency microwave signal sent by the other party into a USB3.0 electrical signal and sends it to the signal input end of the USB3.0 host controller 1 of the computer host; the control circuit 4 at the USB3.0 microwave transmitting end includes an MCU control unit 14, a detection circuit 17, an LED indication unit 15, and a management interface 16, which is mainly responsible for communication negotiation, power control, system management, and fault display; the power supply circuit 3 supplies power to the local circuit, and additionally provides power to the USB3.0 microwave receiving end and its connected terminal devices through the internal DC-DC high isolation voltage module.

[0059] The USB3.0 electrical signal output by the upstream interface of the USB3.0 HUB main control chip is converted into an extremely high frequency microwave signal by the internal microwave transmission circuit TX of the EHF transceiver 7 at the USB3.0 microwave receiving end and transmitted to the microwave receiving end RX of the USB3.0 EHF transceiver 2 at the USB3.0 microwave transmitting end; the microwave receiving end RX of the EHF transceiver 7 at the USB3.0 microwave receiving end converts the extremely high frequency microwave signal sent by the other party into a USB3.0 electrical signal and sends it to the signal input end of the upstream interface of the USB3.0 HUB main control chip 6; the control circuit 8 at the USB3.0 microwave transmitting end includes an MCU control unit 24, a detection circuit 27, and an LED indication unit 15, which is mainly responsible for communication negotiation, power control, system management, and fault display; the power supply circuit 9 supplies power to the local circuit, and additionally provides power to the terminal devices connected to the USB3.0 downstream interface 5 at the USB3.0 microwave receiving end.

[0060] Refer to Figure 2-8 , and the USB3.0 microwave transmitting end will be described in detail.

[0061] As Figure 2 shown, the USB3.0 microwave transmitting end includes a USB3.0 upstream interface 11, a USB3.0 EHF transceiver 13, an MCU control unit 14, an LED indication circuit 15, a management interface circuit 16, a detection circuit 17, and a power supply unit 18.

[0062] The USB3.0 EHF transceiver 13 consists of a microwave transmitting chip KSS104-TX and a microwave receiving chip KSS104-RX. The working rate of the KSS104 series of chips can reach 6Gbps, and by replacing with other chip models of the same type, it can reach 12Gbps. Therefore, it can meet the 10Gbps rate required by USB3.1 Gen2. The KSS104 series of chips integrate an electromagnetic waveguide inside, so there is no need to externally connect a microwave antenna, and the circuit is greatly simplified. KSS104-TX is used to convert the USB3.0 electrical signal output by the USB3.0 host controller of the computer into an extremely high-frequency microwave signal, and KSS104-RX is used to convert the received extremely high-frequency microwave signal into a USB3.0 electrical signal and send it to the signal input end of the USB3.0 host controller of the computer host.

[0063] Connection of the microwave transmitting chip KSS104-TX of the USB3.0 EHF transceiver 13 to other circuits: For the pin functions and configuration values of the USB3.0 microwave transmitting end KSS104-TX chip, refer to Table 1. The high-speed differential signal HSD_c input pin 1300 and the high-speed differential signal HSD_t input pin 1301 of the chip are connected to the USB3.0 signal input end of the USB3.0 upstream interface 11; the low-speed differential signal LSD_c input pin 1302 is left floating and not connected; the low-speed differential signal LSD_t input pin 1303 is connected to GND through a resistor; the TRBS chip TX mode selection pin 1304 is connected to VDDQ through a resistor; the internal connection communication ICC input pin 1305 of the chip is connected to the internal connection communication ICC output pin 1325 of the USB3.0 microwave transmitting end KSS104-RX chip, and at the same time is connected to the ICC input pin 1412 of the MCU control unit 14; the chip link connection enable LDBE input pin 1306 is connected to the chip link connection enable LDBE output pin 1326 of the USB3.0 microwave transmitting end KSS104-RX chip, and at the same time is connected to the LDBE_OUT output pin 1411 of the MCU control unit 14; the chip power-off control PD_N input pin 1307 is connected to an external delay circuit, and at the same time is connected to the PD_N_1 output pin 1413 of the MCU control unit 14; the chip standard selection SS2 pin 1308 is connected to GND through a resistor; the chip ID selection G1 pin 1309 is connected to GND through a resistor; the chip SPI interface signals: the SSB signal pin 1310, the SCK signal pin 1311, the MOSI signal pin 1312, and the MISO signal pin 1313 are all connected to an external SPI programming interface; the main power supply VDDQ input pin 1314 is connected to the VDDQ output pin 1822 of the power supply unit 18; the low-speed I / O power supply VDD input pin 1315 is connected to the VDDQ output pin 1823 of the power supply unit 18.

[0064] Table 1 Pin Function Configuration Definition of USB3.0 Microwave Transmitter (Host) KSS104-TX

[0065] 。

[0066] Connection of the microwave receiving chip KSS104-RX of the USB3.0 EHF transceiver 13 to other circuits: For the pin functions and configuration values of the USB3.0 microwave transmitter KSS104-RX chip, refer to Table 2. The high-speed differential signal HSD_c output pin 1320 and the high-speed differential signal HSD_t output pin 1321 of the chip are connected to the USB3.0 signal output terminal of the USB3.0 upstream interface 11; the low-speed differential signal LSD_c input pin 1322 is connected to the RX_RDY signal input pin 1415 of the MCU control unit 14; the low-speed differential signal LSD_t input pin 1323 is connected to GND through a resistor; the TRBS chip RX mode selection pin 1324 is connected to GND through a resistor; the internal connection communication ICC output pin 1325 of the chip is connected to the internal connection communication ICC input pin 1305 of the USB3.0 microwave transmitter KSS104-TX chip and is also connected to the ICC input pin 1412 of the MCU control unit 14; the chip link connection enable LDBE output pin 1326 is connected to the chip link connection enable LDBE input pin 1306 of the USB3.0 microwave transmitter KSS104-TX chip and is also connected to the LDBE_OUT output pin 1411 of the MCU control unit 14; the chip power-off control PD_N input pin 1327 is connected to an external delay circuit and is also connected to the PD_N_2 output pin 1414 of the MCU control unit 14; the chip standard selection SS2 pin 1328 is connected to GND through a resistor; the chip ID selection G1 pin 1329 is connected to GND through a resistor; the chip SPI interface signals: SSB signal pin 1330, SCK signal pin 1331, MOSI signal pin 1332, and MISO signal pin 1313 are connected together to an external SPI programming interface; the main power supply VDDQ input pin 1334 is connected to the VDDQ output pin 1822 of the power supply unit 18; the low-rate I / O power supply VDD input pin 1335 is connected to the VDDQ output pin 1823 of the power supply unit 18.

[0067] Table 2 Pin Function Configuration Definition of USB3.0 Microwave Transmitter (Host) KSS104-RX

[0068] 。

[0069] The MCU control unit 14 has an in - circuit programming and upgrading interface. The ISP_RS232_TXD output pin 1445 is connected to the RXD of the RS - 232 interface of the computer host; the ISP_RS232_RXD output pin 1446 is connected to the TXD of the RS - 232 interface of the computer host. The MCU control unit 24 will output corresponding negotiation control instructions according to the signal states of the input signals ICC, RX_RDY, H_Com_RX, D_DET_R_IN, USB_PWR_FL. For those parts where the signal connections are described in other circuit descriptions, they will not be described in detail here.

[0070] The LED display circuit 15 is used to indicate information such as communication status and fault conditions.

[0071] The connection of the management interface 16 to other circuits: The USB2.0 signal USB2.0+ / - input port 161 is connected to an external USB2.0 host controller, thus adding an RS - 232 management serial port on the PC host; the RS232_TXD pin 164 of the serial port of the management interface 16 is connected to the CMI_RS232_RXD input pin 1442 of the MCU control unit 14; the RS232_RXD pin 163 of the serial port of the management interface 16 is connected to the CMI_RS232_TXD input pin 1441 of the MCU control unit 14. For those parts where the signal connections are described in other circuit descriptions, they will not be described in detail here.

[0072] Detection circuit 17, having a pair of Hall sensors and magnetic elements, a pair of opto-coupler elements, and a two-way communication can be carried out between the USB3.0 microwave transmitter and the USB3.0 microwave receiver through the opto-coupler elements, while the Hall sensors and magnetic elements are used to establish the physical connection between the USB3.0 microwave transmitter and the USB3.0 microwave receiver; when the magnetic element of the USB3.0 microwave receiver approaches the Hall sensor of the USB3.0 microwave transmitter, the Hall sensor will output a fixed level signal Dev_DET_R to determine that the USB3.0 microwave transmitter and the USB3.0 microwave receiver have approached each other within the effective range, and both will initiate a connection request based on this signal; the signal output pin 172 of Dev_DET_R is connected to the D_DET_R_IN input pin 1423 of the MCU control unit 14, and the MCU control unit 14 sends out LDBE_OUT, PD_N_1, and PD_N_2 signals to the EHF transceiver of the USB3.0 microwave transmitter. The H_Com_TX_IN signal input pin 171 of the opto-coupler transmission circuit of the detection circuit 17 is connected to the H_Com_TX output pin 1421 of the MCU control unit 14, and the MCU control unit 14 is sent through the opto-coupler to the D_Com_RX input pin 2422 of the MCU control unit 24 of the USB3.0 microwave receiver.

[0073] Connection of the power supply unit 18 to other circuits: The external power supply EXT_5V pin 1818 is connected to an external power supply; the USB bus power supply USB_5V pin 1816 is connected to the power output pin of a USB bus power supply chip. Preferably, the chip model is SP2525A-2E, and the chip outputs voltage when its enable pin is at a low level; the USB bus power supply detection signal USB_PWR_DET output pin 1811 is connected to the USB bus power supply detection signal USB_PWR_DET input pin 1428 of the MCU control unit 14; the USB bus power supply chip enable signal PWR_SW input pin 1813 is connected to the enable PWR_SW output pin 1424 of the USB bus power supply chip of the MCU control unit 14. When PWR_SW is at a low level, the USB bus power supply chip outputs a power supply voltage; the USB bus power supply chip current overload signal USB_PWR_FL output pin 1814 is connected to the current overload signal USB_PWR_FL input pin 1448 of the USB bus power supply chip of the MCU control unit 14; when there is no external power supply, USB_PWR_DET keeps outputting a low level, and the PWR_SW pin 1424 of the MCU control unit 14 outputs a low-level enable signal to the PWR_SW input pin 1813 of the power supply unit 18. At this time, the USB bus provides power supply to all circuits; when there is an external power supply, the USB_PWR_DET output pin 1811 of the power supply unit 18 keeps outputting a high level, and the PWR_SW output pin 1424 of the MCU control unit 14 outputs a high-level enable signal to the PWR_SW input pin 1813 of the power supply unit 18. At this time, the USB bus power supply chip does not work, and the external power supply supplies power to the entire circuit; the power supply VCC_MU output pin 1824 of the MCU control unit 14 is connected to the power supply VCC_MCU input pin 1425 of the MCU control unit 14. The positive pole of a diode inside the power supply unit 18 is connected to EXT_5V, the negative pole of this diode is connected to VCC_MU, and the positive pole of another diode is connected to USB_5V, the negative pole of this diode is connected to VCC_MU. The MCU control unit 14 draws power from both the USB interface and the external power supply simultaneously. The power supply of the MCU control unit 14 is preferentially supplied, that is, it is not affected by the power supply switching circuit; the power supply VCC_CMI output pin 1825 of the management interface 16 is connected to the power supply VCC_CMI input pin 162 of the management interface 16; the power supply USB_ISO output pin 1826 of the DC-DC high-voltage isolation module of the power supply unit 18 is connected to the USB_ISO_PWR input pin 2816 of the power supply unit 28 of the USB3.0 microwave receiving end; USB3.The power supply enable signal EHF_PWR_EN input pin 1815 of the microwave transmitter is connected to the EHF_PWR_EN output pin 1815 of the MCU control unit 14. If there is a description of this part of the signal connection in other circuit descriptions, it will not be described in detail here.

[0074] Refer to Figure 9-15 , and the USB3.0 microwave receiver will be described in detail.

[0075] As Figure 9 shown, the USB3.0 microwave receiver includes a USB3.0 downstream interface 21, a USB3.0 HUB main control chip 22, a USB3.0 EHF transceiver 23, an MCU control unit 24, an LED indication circuit 25, a detection circuit 27, and a power supply unit 28.

[0076] The USB3.0 downstream interface 21 has at least one USB3.0 port for connecting to a USB3.0 terminal device.

[0077] Connection of the pins of the USB3.0 HUB main control chip 22 to other circuits: The EEPROM data bus 2212 is externally connected to the EEPROM chip 29, and the specific model is M24C64; the upstream interface overspeed transmission signal U3H_TX+ / - differential pair 2213 of the USB3.0 HUB main control chip 22 is connected to the differential signal inputs HSD_t and HSD_c of the EHF microwave transmitter 231 of the receiving end EHF transceiver 23; the upstream interface overspeed reception signal U3H_RX+ / - differential pair 2214 of the USB3.0 HUB main control chip 22 is connected to the differential signal outputs HSD_t and HSD_c of the EHF microwave receiver 232 of the receiving end EHF transceiver 23; the VBUS monitoring signal VBUS_DET input pin 2215 of the USB3.0 upstream interface power supply voltage is connected to the VBUS control signal VBUS_DET output pin 2426 of the MCU control unit 24, and this signal is used to control the communication negotiation between the USB3.0 microwave transmission end and the USB3.0 microwave reception end; the reset signal RST_USB input 2216 is connected to the external reset circuit on the one hand and to the USB3.0 HUB reset signal RST_USB output pin 2447 of the MCU control unit 24 on the other hand; the power enable signal PPON1 output pin 2231 of the downstream interface port 1 is connected to the downstream port 1 power enable signal DP_PWEN1 input pin 2828 of the power supply unit 28; the power enable signal PPON2 output pin 2233 of the downstream interface port 2 is connected to the downstream port 2 power enable signal DP_PWEN1 input pin 2829 of the power supply unit 28; the power enable signal PPON3 output pin 2235 of the downstream interface port 3 is connected to the downstream port 3 power enable signal DP_PWEN3 input pin 2830 of the power supply unit 28; the power enable signal PPON4 output pin 2237 of the downstream interface port 4 is connected to the downstream port 4 power enable signal DP_PWEN4 input pin 2831 of the power supply unit 28; the overcurrent signal OCI input pin 2235 of the downstream interface port is connected to the downstream port 1 overcurrent signal DP_OVCI1 output pin 2832, the downstream port 2 overcurrent signal DP_OVCI2 output pin 2833, the downstream port 3 overcurrent signal DP_OVCI3 output pin 2834, and the downstream port 4 overcurrent signal DP_OVCI1 output pin 2835 of the power supply unit; the differential pair USB3-TX1+ / - signal output 2222, the USB3-RX1+ / - signal input 2223, and the USB2-1+ / - differential pair 2241 are respectively connected to the USB3.0 interface of the downstream interface 1; the differential pair USB3-TX2+ / - signal output 2224, the USB3-RX2+ / - signal input 2225, and the USB2-2+ / - differential pair 2242 are respectively connected to the USB3. of the downstream interface 2.The 0 interface; the differential pair USB3-TX3+ / - signal output 2226 and the USB3-RX3+ / - signal input 2227, and the USB2-3+ / - differential pair 2243 are respectively connected to the USB3.0 interface of the downstream interface 3; the differential pair USB3-TX4+ / - signal output 2228 and the USB3-RX4+ / - signal input 2229, and the USB2-4+ / - differential pair 2244 are respectively connected to the USB3.0 interface of the downstream interface 4. For those with descriptions of the signal connections in this part in other circuit descriptions, they will not be described in detail here.

[0078] The USB3.0 EHF transceiver 23 consists of KSS104-TX and KSS104-RX. The KSS104 series of chips internally contains an EHF microwave transmitter and an EHF microwave receiver, which can be configured into a transmission mode or a reception mode as needed. The working rate can reach 6 Gbps, and by replacing with other chip models of the same type, it can reach 12 Gbps. Therefore, it can meet the 10 Gbps rate required by USB3.1 Gen2. The KSS104 series of chips integrate an electromagnetic waveguide internally, so there is no need to externally connect a microwave antenna, and the circuit is greatly simplified. The chip area is only 5 mm x 5 mm. KSS104-TX is used to convert the USB3.0 electrical signal output from the upstream interface of the USB3.0 HUB main control chip into an extremely high-frequency microwave signal, and KSS104-RX is used to convert the received extremely high-frequency microwave signal into a USB3.0 electrical signal and send it to the signal input end of the upstream interface of the USB3.0 HUB main control chip 22.

[0079] Connection of the microwave transmitting chip KSS104-TX of the USB3.0 EHF transceiver 23 to other circuits: For the pin functions and configuration values of the USB3.0 microwave transmitting end KSS104-TX chip, refer to Table 3. The high-speed differential signal HSD_c input pin 2300 and the high-speed differential signal HSD_t input pin 2301 of the chip are connected to the USB3.0 signal output end of the USB3.0 upstream interface of the USB3.0 HUB main control chip 22; the low-speed differential signal LSD_c input pin 2302 is left floating and not connected; the low-speed differential signal LSD_t input pin 2303 is connected to GND through a resistor; the TRBS chip TX mode selection pin 2304 is connected to VDDQ through a resistor; the internal connection communication ICC input pin 2305 of the chip is connected to the internal connection communication ICC output pin 2325 of the USB3.0 microwave receiving end KSS104-RX chip and is also connected to the ICC input pin 2412 of the MCU control unit 24; the chip link connection enable LDBE input pin 2306 is connected to the chip link connection enable LDBE output pin 2326 of the USB3.0 microwave receiving end KSS104-RX chip and is also connected to the LDBE_OUT output pin 2411 of the MCU control unit 24; the chip power-off control PD_N input pin 2307 is connected to an external delay circuit and is also connected to the PD_N_1 output pin 2413 of the MCU control unit 24; the chip standard selection SS2 pin 2308 is connected to GND through a resistor; the chip ID selection G1 pin 2309 is connected to VDDQ through a resistor; the chip SPI interface signals: the SSB signal pin 2310, the SCK signal pin 2311, the MOSI signal pin 2312, and the MISO signal pin 2313 are connected together to an external SPI programming interface; the main power supply VDDQ input pin 2314 is connected to the VDDQ output pin 2822 of the power supply unit 28; the low-rate I / O power supply VDD input pin 2315 is connected to the VDDQ output pin 2823 of the power supply unit 28.

[0080] Table 3 Pin Function Configuration Definition of the USB3.0 Microwave Receiving End (Device) KSS104-TX

[0081] 。

[0082] Connection of the microwave receiving chip KSS104-RX of the USB3.0 EHF transceiver 23 to other circuits: For the pin functions and configuration values of the USB3.0 microwave receiving end KSS104-RX chip, refer to Table 4. The high-speed differential signal HSD_c output pin 2320 and the high-speed differential signal HSD_t output pin 2321 of the chip are connected to the USB3.0 signal input / output terminals of the USB3.0 upstream interface of the USB3.0 HUB main control chip 22; the low-speed differential signal LSD_c input pin 2322 is connected to the RX_RDY signal input pin 2415 of the MCU control unit 24. This signal is used to control the communication negotiation between the USB3.0 microwave transmitting end and the USB3.0 microwave receiving end. After being processed by the MCU, an enabling signal is given to the VBUS_DET signal input pin of the USB3.0 HUB main control chip to make the USB3.0 HUB main control chip enter the online connection state; the low-speed differential signal LSD_t input pin 2323 is connected to GND through a resistor; the RX mode selection pin 2324 of the TRBS chip is connected to GND through a resistor; the internal connection communication ICC output pin 2325 of the chip is connected to the internal connection communication ICC input pin 2305 of the USB3.0 microwave receiving end KSS104-TX chip and is also connected to the ICC input pin 1412 of the MCU control unit 24; the chip link connection enable LDBE output pin 2326 is connected to the chip link connection enable LDBE input pin 2306 of the USB3.0 microwave receiving end KSS104-TX chip and is also connected to the LDBE_OUT output pin 2411 of the MCU control unit 24; the chip power-off control PD_N input pin 2327 is connected to an external delay circuit and is also connected to the PD_N_2 output pin 2414 of the MCU control unit 24; the chip standard selection SS2 pin 2328 is connected to GND through a resistor; the chip ID selection G1 pin 2329 is connected to VDDQ through a resistor; the chip SPI interface signals: the SSB signal pin 2330, the SCK signal pin 2331, the MOSI signal pin 2332, and the MISO signal pin 2313 are connected together to an external SPI programming interface; the main power VDDQ input pin 2334 is connected to the VDDQ output pin 2822 of the power supply unit 28; the low-speed I / O power VDD input pin 2335 is connected to the VDDQ output pin 2823 of the power supply unit 28.

[0083] Table 4 Definition of Pin Function Configuration of USB3.0 Microwave Receiving End (Device) KSS104-RX

[0084] 。

[0085] The LED display circuit 25 is used to indicate information such as communication status and fault conditions.

[0086] Detection circuit 27 includes a pair of Hall sensors and magnetic elements, and a pair of optoelectronic couplers. Bidirectional communication can be carried out between the USB 3.0 microwave transmitter and the USB 3.0 microwave receiver through the optoelectronic couplers, and the Hall sensors and magnetic elements are used to establish the physical connection between the USB 3.0 microwave transmitter and the USB 3.0 microwave receiver. When the magnetic element of the USB 3.0 microwave receiver approaches the Hall sensor of the USB 3.0 microwave transmitter, the Hall sensor will output a fixed level signal Host_DET_R to determine that the USB 3.0 microwave transmitter and the USB 3.0 microwave receiver have approached each other within the effective range, and both will initiate a connection request based on this signal. The signal output pin 272 of Host_DET_R is connected to the H_DET_R_IN input pin 2423 of the MCU control unit 24. The MCU control unit 14 sends signals LDBE_OUT, PD_N_1, and PD_N_2 to the EHF transceiver of the USB 3.0 microwave receiver. The D_Com_TX_IN signal input pin 271 of the optoelectronic coupler transmission circuit of the detection circuit 27 is connected to the D_Com_TX output pin 2421 of the MCU control unit 24. The MCU control unit 14 is optically coupled to the H_Com_RX input pin 1422 of the MCU control unit 14 of the USB 3.0 microwave transmitter.

[0087] Connection of the power supply unit 28 to other circuits: The external power supply EXT_5V pin 2815 is connected to the external power supply; the entire circuit is powered by the external power supply. The VCC_MU output pin 2824 of the power supply for the MCU control unit 24 is connected to the VCC_MCU input pin 2425 of the MCU control unit 24. The VCC_HUB output pin 2825 of the power supply unit 28 is connected to the VCC_HUB input pin 2211 of the USB 3.0 HUB main control chip 22. The power supplies of the USB 3.0 microwave receiver's USB 3.0 downstream interfaces are all connected to the downstream port power supply DP_VCC_1 - 4 output pins 2826 of the power supply unit 28. The power supply enable signal EHF_PWR_EN input pin 2815 of the USB 3.0 EHF transceiver 23 is connected to the EHF_PWR_EN output pin 2427 of the MCU control unit 24. The power management PM_IN signal input pin 2817 of the power supply unit 28 is connected to the PM_OUT_MU output pin 2449 of the input pin of the MCU control unit 24. The power management PM_OUT signal output pin 2818 of the power supply unit 28 is connected to the PM_IN_MU input pin 2448 of the input pin of the MCU control unit 24. For those parts where the signal connections are described in the description of other circuits, they will not be described in detail here.

[0088] The MCU control unit 24 has an in - circuit programming and upgrade interface. The ISP_RS232_TXD output pin 2445 is connected to the RXD of the RS - 232 interface of the computer host; the ISP_RS232_RXD output pin 2446 is connected to the TXD of the RS - 232 interface of the computer host. The MCU control unit 24 will output corresponding negotiation control instructions according to the signal states of the input signals ICC, RX_RDY, D_Com_RX, H_DET_R_IN, and PM_IN_MU. For those parts where the signal connections are described in other circuit descriptions, they will not be described in detail here.

[0089] The following will detail a specific implementation method of an automatic negotiation method for microwave communication between a USB3.0 microwave transmitting end and a USB3.0 microwave receiving end.

[0090] 1. At any time, the microwave signal receiver 232 of the USB3.0 microwave transmitting end always receives the microwave signal earlier than the microwave signal receiver 232 of the USB3.0 microwave receiving end. After the connection of the microwave signal receiver 132 of the USB3.0 microwave transmitting end is interrupted, the MCU control unit 14 outputs a control instruction to keep the microwave signal transmitter 131 of the USB3.0 microwave transmitting end in a prohibited transmission state. After the microwave signal receiver 232 of the USB3.0 microwave receiving end cannot receive the microwave signal, it outputs a low - level status indication signal Receive Ready to the RX_RDY input pin 2415 of the MCU control unit 24. The MCU control unit 24 outputs a control instruction to disconnect the upstream interface link of the USB3.0 HUB main control chip 22, and the USB3.0 HUB main control chip 22 enters the standby state to ensure that the USB3.0 HUB main control chip 22 does not send out super - high - speed data packets, but the microwave signal transmitter 232 of the USB3.0 microwave receiving end is always in the transmission state.

[0091] 2. After the USB3.0 microwave transmitting end and the USB3.0 microwave receiving end are separated, the physical connection detection circuits of both send out control signals to make both the USB3.0 microwave transmitting end and the USB3.0 microwave receiving end in a power - off state. The MCU control unit outputs a control instruction according to the output signal of the detection circuit to interrupt the connection between the USB3.0 upstream interface 11 of the USB3.0 microwave transmitting end and the USB3.0 main controller 1 of the computer host.

[0092] 3. After the physical connection between the USB3.0 microwave transmitter and the USB3.0 microwave receiver is re-established, the physical connection detection circuits of both send a control signal to power on both the USB3.0 microwave transmitter and the USB3.0 microwave receiver. The microwave signal receiver 132 of the USB3.0 microwave transmitter receives the microwave signal sent by the USB3.0 microwave receiver. The microwave signal receiver 132 sends a status indication signal Receive Ready to the RX_RDY input pin 1415 of the transmitter MCU control unit 14. The MCU control unit 14 sends a control signal to enable the microwave signal transmitter 131 of the USB3.0 microwave transmitter. The microwave signal transmitter 131 of the USB3.0 microwave transmitter sends a link initialization signal to the USB3.0 microwave receiver. After receiving the microwave signal, the microwave signal receiver 232 of the USB3.0 microwave receiver outputs a high-level status indication signal Receive Ready to the RX_RDY input pin 2415 of the receiver MCU control unit. The MCU control unit 24 sends a VBUS_DET enable signal to the USB3.0 HUB main control chip 22, so that the USB3.0 HUB main control chip 22 enters the online connection state. When the USB3.0 HUB main control chip 22 receives the LFPS negotiation signal sent by the computer host USB3.0 main control chip 1, it will return the corresponding LFPS negotiation signal to the computer host USB3.0 main control chip 1 until the link connection is successful.

[0093] 4. When powered by an external power supply, if the data cable between the USB3.0 microwave transmitter and the computer host USB3.0 main control chip 1 is unplugged, the MCU control unit 14 of the USB3.0 microwave transmitter sends an instruction to the power supply unit 18 to disable the microwave signal transmitter 131 of the transmitter, and at the same time cut off the power supply of the USB3.0 microwave receiver to reduce power consumption. When the data cable connected to the computer host is reconnected and the computer host is in the powered-on state and the USB3.0 port is powered normally, the MCU control unit 14 of the USB3.0 microwave transmitter sends an instruction to the power supply unit 18 to restore the power supply of the USB3.0 microwave receiver, and the microwave signal transmitter 232 of the USB3.0 microwave receiver sends a link initialization signal.

[0094] 5. If the USB3.0 terminal device of the USB3.0 microwave receiving end malfunctions, the computer host can send an instruction to the MCU control unit 14 of the sending end through the management interface 16. The MCU control unit 14 of the sending end transmits the instruction to the D_Com_RX input pin 2422 of the MCU control unit 24 of the receiving end through the optocoupler circuit of the detection circuit 17. Further, the MCU control unit 24 of the receiving end sends a port power status detection instruction to the power supply unit 28 of the receiving end through the power management PM_OUT signal output pin 2818. If there is no current overload, a port power restart instruction is sent, so that the USB3.0 terminal device performs a cold start.

[0095] 6. In the two cases where the microwave transmitting chip times out in input signal detection and the microwave receiving chip times out in input microwave signal detection, the chip will enter the standby state. If the input signal of the microwave transmitting chip is detected again, it will immediately exit the standby state and enter the active state; if the input microwave signal of the microwave receiving chip is detected again, it will immediately exit the standby state and enter the active state.

[0096] Through the above method, the compatibility problem in the use process can be well solved, and the terminal device fault diagnosis and reset function can also be realized.

[0097] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are limited to this. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should all be regarded as belonging to the protection scope determined by the claims submitted by the present invention.

Claims

1. An automatic negotiation method for microwave communication between a USB3.0 microwave transmitting end and a USB3.0 microwave receiving end, characterized in that: The USB2.0 / 3.0 HUB isolated by extremely high frequency microwaves includes a USB3.0 microwave transmitter connected to a computer host and a USB3.0 microwave receiver connected to a USB terminal device. They communicate with each other through an auto-negotiation method for microwave communication between the USB3.0 microwave transmitter and the USB3.0 microwave receiver. Inside both the USB3.0 microwave transmitter and the USB3.0 microwave receiver, there is an MCU control unit, which is used to implement the auto-negotiation of microwave communication between the USB3.0 microwave transmitter and the USB3.0 microwave receiver, and to implement the digital diagnosis of the USB3.0 microwave transmitter and the USB3.0 microwave receiver and the remote control of the USB3.0 terminal device. The specific method content is as follows: 1> At any time, the microwave signal receiver of the USB3.0 microwave transmitter always receives the microwave signal earlier than the microwave signal receiver of the USB3.0 microwave receiver; after the connection of the microwave signal receiver of the USB3.0 microwave transmitter is interrupted, the MCU control unit issues a control instruction to keep the microwave signal transmitter of the USB3.0 microwave transmitter in a prohibited transmission state. After the microwave signal receiver of the USB3.0 microwave receiver fails to receive the microwave signal, it outputs a low-level status indication signal Receive Ready to the RX_RDY input pin of the MCU control unit at the receiving end. The MCU control unit issues a control instruction to disconnect the upstream interface link of the USB3.0 HUB main control chip, and the USB3.0 HUB main control chip enters the standby state to ensure that the USB3.0 HUB main control chip does not send out ultra-high-speed data packets, but the microwave signal transmitter of the USB3.0 microwave receiver is always in the transmission state; 2> After the USB3.0 microwave transmitter and the USB3.0 microwave receiver are separated, the physical connection detection circuits of both send out control signals to make both the USB3.0 microwave transmitter and the USB3.0 microwave receiver in the power-off state. The MCU control unit issues a control instruction according to the output signal of the detection circuit to interrupt the connection between the USB3.0 upstream interface of the USB3.0 microwave transmitter and the USB3.0 main controller link of the computer host; 3> When the physical connection between the USB3.0 microwave transmitter and the USB3.0 microwave receiver is re-established, the physical connection detection circuits of both send a control signal to power on both the USB3.0 microwave transmitter and the USB3.0 microwave receiver. The microwave signal receiver of the USB3.0 microwave transmitter receives the microwave signal sent by the USB3.0 microwave receiver. The microwave signal receiver sends a high-level status indication signal Receive Ready to RX_RDY of the transmitter MCU control unit. The MCU control unit sends a control signal to enable the microwave signal transmitter of the USB3.0 microwave transmitter. The microwave signal transmitter of the USB3.0 microwave transmitter sends a link initialization signal to the USB3.0 microwave receiver. After receiving the microwave signal, the microwave signal receiver of the USB3.0 microwave receiver outputs a status indication signal Receive Ready to RX_RDY of the receiver MCU control unit. The MCU control unit sends a VBUS_DET enable signal to the USB3.0 HUB main control chip, so that the USB3.0 HUB main control chip enters the online connection state. When the USB3.0 HUB main control chip receives the LFPS negotiation signal sent by the computer host USB3.0 main control chip, it will return the corresponding LFPS negotiation signal to the computer host USB3.0 main control chip until the link connection is successful; 4> When powered by an external power supply, if the data cable between the USB3.0 microwave transmitter and the computer host USB3.0 main control chip is unplugged, the MCU control unit of the USB3.0 microwave transmitter sends an instruction to the power supply unit to disable the microwave signal transmitter of the transmitter, and at the same time cut off the power supply of the USB3.0 microwave receiver to reduce power consumption; when the data cable connected to the computer host is reconnected and the computer host is in the powered-on state and the USB3.0 port is powered normally, the MCU control unit of the USB3.0 microwave transmitter sends an instruction to the power supply unit to restore the power supply of the USB3.0 microwave receiver, and the microwave signal transmitter of the USB3.0 microwave receiver sends a link initialization signal; 5> If the USB3.0 terminal device of the USB3.0 microwave receiver is not working properly, the computer host sends an instruction to the MCU control unit of the transmitter through the management interface. The MCU control unit of the transmitter transfers the instruction to the MCU control unit of the receiver through the optocoupler circuit. Further, the MCU control unit of the receiver sends a port power status detection instruction to the power supply unit of the receiver through the power management PM_OUT signal output pin. If there is no current overload, a port power restart instruction is sent, so that the USB3.0 terminal device performs a cold start; 6> In the two cases where the microwave transmitting chip detects timeout of the input signal and the microwave receiving chip detects timeout of the input microwave signal, the chip will enter the standby state. If the input signal of the microwave transmitting chip is detected again, it will immediately exit the standby state and enter the active state; if the input microwave signal of the microwave receiving chip is detected again, it will immediately exit the standby state and enter the active state.

2. A USB2.0 / 3.0 HUB using extremely high frequency microwave isolation, characterized in that: It includes a USB3.0 microwave transmitting end connected to the computer host and a USB3.0 microwave receiving end connected to the USB terminal device. They communicate with each other through an automatic negotiation method for microwave communication between the USB3.0 microwave transmitting end and the USB3.0 microwave receiving end as described in claim 1. Inside the USB3.0 microwave transmitting end, there is a USB3.0 EHF transceiver, which is composed of KSS104-TX and KSS104-RX. An electromagnetic waveguide is integrated inside the chip, so there is no need to externally connect a microwave antenna. Replacing the same type of chip can meet the requirements of USB3.1 Gen2. KSS104-TX is used to convert the USB3.0 electrical signal output by the USB3.0 host controller of the computer host into an extremely high-frequency microwave signal, and KSS104-RX is used to convert the received extremely high-frequency microwave signal into a USB3.0 electrical signal and send it to the signal input end of the USB3.0 host controller of the computer host.

3. The USB2.0 / 3.0 HUB with extremely high frequency microwave isolation according to claim 2, characterized in that: Inside the USB3.0 microwave receiver, there is also a USB3.0 EHF transceiver, which is composed of KSS104-TX and KSS104-RX. An electromagnetic waveguide is integrated inside the chip, so there is no need to externally connect a microwave antenna. Replacing the same type of chip can meet the requirements of USB3.1 Gen2. KSS104-TX is used to convert the USB3.0 electrical signal output from the upstream interface of the USB3.0 HUB master chip into an extremely high-frequency microwave signal. KSS104-RX is used to convert the received extremely high-frequency microwave signal into a USB3.0 electrical signal and send it to the signal input terminal of the upstream interface of the USB3.0 HUB master chip. Inside the USB3.0 HUB master chip, there is a USB2.0 acceleration engine, which converts all USB2.0 signals of the downstream ports into USB3.0 signals. Finally, the USB3.0 signals of all downstream interfaces are transmitted with the USB3.0 master chip of the computer host through the ultra-high-speed HUB controller and routing engine inside the USB3.0 HUB master chip. The USB3.0 ultra-high-speed differential data line is used to simultaneously transmit USB3.0 / USB2.0 / 1.1 / 1.0 data; during the USB3.0 microwave communication process, only the received USB3.0 electrical signal is converted from electrical to microwave and then back to electrical. The microwave transmission device will not add any additional data to the data stream. Therefore, the USB3.0 signal is transparent during transmission using the microwave transmission device and terminal peripherals compliant with the USB3.0 / USB2.0 / 1.1 / 1.0 standards can be normally connected.

4. The USB2.0 / 3.0 HUB using extremely high frequency microwave isolation according to claim 2, characterized in that: There is a detection circuit in both the USB3.0 microwave transmitter and a USB3.0 microwave receiver. The detection circuit has a pair of Hall sensors and magnetic elements, and a pair of opto-coupler elements for receiving and emitting light. Bidirectional communication is carried out between the USB3.0 microwave transmitter and the USB3.0 microwave receiver through the opto-coupler elements, while the Hall sensors and magnetic elements are used to establish the physical connection between the USB3.0 microwave transmitter and the USB3.0 microwave receiver. When the magnetic element of the USB3.0 microwave receiver approaches the Hall sensor of the USB3.0 microwave transmitter, the Hall sensor will output a fixed level signal to determine that the USB3.0 microwave transmitter and the USB3.0 microwave receiver are close to each other within the effective range, and thus both will initiate a connection request based on this signal.

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