CN107276675A

CN107276675A - A kind of USB3.0 HUB based on optical fiber long-distance transmissions

Info

Publication number: CN107276675A
Application number: CN201710675655.2A
Authority: CN
Inventors: 胡承恩
Original assignee: Dongguan City Qi Ding Electro-Optical Technology Inc (us) 62 Martin Road Concord Massachusetts 017
Current assignee: Dongguan City Qi Ding Electro-Optical Technology Inc (us) 62 Martin Road Concord Massachusetts 017
Priority date: 2017-08-09
Filing date: 2017-08-09
Publication date: 2017-10-20

Abstract

A kind of USB3.0 HUB based on optical fiber long-distance transmissions, it is characterised in that：Including a USB3.0 optical fiber transmitting terminal and a USB3.0 optical fiber receiving terminal；Four ultrahigh speed USB3.0 terminal peripheral hardwares can be connected simultaneously in the USB3.0 HUB of USB3.0 optical fiber receiving terminals；It is transparent in transmitting procedure in USB3.0 signals, all ultrahigh speed USB3.0 terminals peripheral hardwares for meeting USB3.0 standards can be connected normally.The present invention also provides a kind of fiber optic communication auto negotiation method to being communicated between USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals；In addition the present invention also provides a kind of method for carrying out numerical diagnostic and the control of USB3.0 terminal unit remotes to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal.

Description

A kind of USB3.0 HUB based on optical fiber long-distance transmissions

Technical field

It is remote between more particularly to a variety of USB3.0 terminal devices and computer the present invention relates to the USB3.0 communications fields The technical field of communication, specifically refers to a kind of USB3.0 HUB based on optical fiber long-distance transmissions.

The invention further relates to it is a kind of between USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals fiber optic communication from Dynamic machinery of consultation.

The invention further relates to it is a kind of USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal are carried out numerical diagnostic and The method of USB3.0 terminal unit remotes control.

Background technology

Transmission speed is substantially improved USB3.0, and it is based on full-duplex data host-host protocol, theoretical transmission rate Up to 5Gbps (i.e. 625MB/ seconds), actual data transfer rate also will be up to 3.2Gbps (i.e. 400MB/ seconds), compared to USB2.0 There are nearly 10 times of lifting in epoch, and transmission rate lifting has been arrived 10Gbps by now newest USB3.1 Gen2 standards, Therefore the transmission range of data encounters unprecedented challenge.Because transmission rate is as defined in conventional USB2.0 standards 5Gbps has been arrived in 480Mbps liftings, therefore general not over 3 meters using traditional cable, and some are put using producer using relaying After large chip, transmission range also can only achieve farthest 15 meters of transmission range, but be due to use process using cable transmission In be particularly susceptible to the influence of electromagnetic interference, therefore be not suitable for making on the larger industrial production line of some electromagnetic interferences With, and some equipment sensitive to electromagnetic interference（Such as military industry equipment）On use；And now with the rise of industry 4.0, permitted The transmission range of many USB3.0 industrial cameras can exceed this distance, or even reach hundreds of meters of distance, other enterprise With unit for security consideration, generally require to manage concentratedly main frame, user can only be stored in distal end using USB3.0 Equipment and USB3.0 printers, so that main frame and the security isolation of user are realized, and it is past between computer and terminal It is past also to have reached rice up to a hundred, and data can not have electromagnetic leakage in transmitting procedure and cause data safety to ensure. And we are that the problem of can solving electromagnetic interference, asking for transmission range can be solved again using optical fiber transmission USB3.0 signals Topic, although having some to realize the device of USB3.0 signal long-distance transmissions now in addition, they are typically all by terminal The USB3.0 data of equipment, which are parsed into other data formats by USB3.0 physical chips and recompiled again, is converted into optical fiber To transmit, the optical signal received is converted into electric signal by other end, is converted into by USB3.0 physical chips and line number Data acquisition is carried out according to capture card is sent to, they are both for some specific equipment applications, it is impossible to realize other USB3.0 marks The access of quasi- terminal device, such as a kind of device for being used for realizing USB3.0 industrial camera long-distance transmissions is can not to be used for accessing Other USB3.0 terminal devices such as USB flash disk, USB3.0 mobile hard disks or printer.

The content of the invention

The technical problem to be solved in the present invention is to provide one kind based on optical fiber transmission support a variety of USB3.0 terminal devices with The USB3.0 HUB of long-distance transmissions between computer, can not only realize that a variety of USB3.0 terminal devices are connected with main frame, and And can be realized by digital diagnostics circuitry USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal carry out numerical diagnostic and USB3.0 terminal unit remotes are controlled.

The technical solution adopted in the present invention：A kind of USB3.0 HUB based on optical fiber long-distance transmissions, including one USB3.0 optical fiber transmitting terminal and a USB3.0 optical fiber receiving terminal, the fiber optic communication communicated between the two can be by self-defined logical Letter rule carries out auto negotiation, and four ultrahigh speed USB3.0 can be connected simultaneously in the USB3.0 HUB of USB3.0 optical fiber receiving terminals Terminal peripheral hardware；Multimode fibre can be used, single-mode fiber can also be used, twin-core fiber can be used, it would however also be possible to employ single Optical fiber, USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals have one being used with the SFP+ optical modules of hot plug During optical module flexibly change, and the length of optical fiber can be connected up according to actual needs.Utilize USB3.0 interfaces Exceed the speed limit data difference interface：SSTX+/- and SSRX+/-, USB3.0 ultrahigh speed communication linkage is realized, transmission range can reach 300 meters to 400 meters, the data that the present invention uses technical scheme to transmit are primary USB3.0 data formats, in USB3.0 light , will not be by USB3.0 master controllers, USB3.0 HUB master control cores in order to ensure compatibility and general applicability during fiber communication The primary USB3.0 data conversions that piece and USB3.0 terminal devices are sent into other forms new encoding and decoding of laying equal stress on are transmitted again, only It is that the USB3.0 electric signals that will be received carry out the conversion of electrical-optical-electrical, fibre optic transmission equipment will not add any attached in a stream Plus data, therefore USB3.0 signals using fibre optic transmission equipment in transmitting procedure be it is transparent, it is all to meet USB3.0 marks Accurate ultrahigh speed USB3.0 terminals peripheral hardware can be connected normally.

It is corresponding with this, another of the invention technical problem to be solved be to provide it is a kind of to USB3.0 optical fiber transmitting terminal and The auto negotiation method of fiber optic communication between USB3.0 optical fiber receiving terminals.

Corresponding with this, it is a kind of to USB3.0 optical fiber transmitting terminals that the present invention also has a technical problem to be solved to be to provide The method for carrying out numerical diagnostic and the control of USB3.0 terminal unit remotes with USB3.0 optical fiber receiving terminal.

By such scheme, the USB3.0 optical fiber transmitting terminal, including USB3.0 upstream Interfaces, USB3.0 HUB master control cores Piece, FLASH chip, Rx_DET fictitious loads, SFP+ optical modules, MCU control unit, management interface circuit, LED indicating circuit, Power supply unit.

The USB3.0 upstream Interfaces, for connecting the USB3.0 master controllers of main frame.

Preferably, the USB3.0 HUB main control chips are μ PD720210, on the one hand for receiving USB3.0 data, separately On the one hand it is used for solving using optical fiber interface repetition in optical fiber transmitting procedure is plugged, SFP+ optical modules are plugged, computer switch Machine and the problem of terminal device can not connect main frame under these states such as restart, can additionally realize that USB3.0 believes Number relaying amplification effect, a port connection management interface circuit of USB3.0 HUB main control chips, realize USB2.0 change Into RS-232 interface, RS-232 interface is connected to a RS-232 serial ports of MCU control unit, for realizing in main frame Hold and the numerical diagnostic of USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals is managed.

The FLASH chip, the configuration data for storing USB3.0 HUB chips.

The Rx_DET fictitious loads, for simulating USB3.0 terminal devices；According to USB3.0 agreements, USB3.0 interfaces Rx inputs must include Rx Detect circuits, and the physical layers of USB 3.0 are when in U1, U2, U3 state, in order to save electric power And LFPS (Low Frequency Period Singal) signals are used as communication media, LFPS signals are a kind of low frequencies Cyclical signal, when USB3.0 downlink ports are not inserted into equipment, USB3.0 master controllers can ceaselessly send Rx Detect square-wave signals, the square-wave signal is not LFPS signals.If never device is plugged, assisted according to USB3.0 View, then have been in Rx Detect states；When there is Device to plug, the Tx ends of USB3.0 HUB chips can then be sent LFPS signals；And the input interface circuit of common SFP+ optical modules does not have the Rx Detect electricity of USB3.0 interface Rx inputs Road, therefore SFP+ optical modules, when being connected with USB3.0 HUB chips, USB3.0 HUB chips can have been at Rx Detect states In, it is impossible to communicated with the USB3.0 HUB main control chips of USB3.0 optical fiber receiving terminals, cause link failure can not enter line number According to transmission, and the Rx_DET fictitious loads in the present invention are the key technology means for solving this problem.

The SFP+ optical modules, are connected to some downstream interface of USB3.0 HUB main control chips, on the one hand for general The electric signal that the Tx output ends of USB3.0 HUB chip downstream interfaces are sent is converted into optical signal, on the other hand for general The optical signal that USB3.0 optical fiber receiving terminals are sended over is converted into electric signal and is sent to USB3.0 optical fiber transmitting terminal USB3.0 HUB cores The downstream interface Rx inputs of piece；In addition, transmitting shut-off control Tx_ of the present invention using SFP+ optical module optical transmitters The No Light Alarm signal LOS output pins of Disable input pins and photoreceiver combine to form the two-way RS-232 biographies of a low rate Defeated passage, a numerical diagnostic passage is constituted by two-way RS-232 transmission channels, MCU control unit, management interface, and computer leads to Numerical diagnostic passage is crossed to realize that power supply circuit or USB3.0 terminal devices to USB3.0 terminal devices send control instruction, And numerical diagnostic management is carried out to the SFP+ optical modules of USB3.0 optical fiber receiving terminals.

The MCU control unit, for controlling USB3.0 HUB and main frame USB3.0 master controllers to shake hands Connection and chip reset, for controlling power supply unit to realize, USB3.0 interfaces are powered and externally fed automatic switchover, for realizing The numerical diagnostic of SFP+ optical modules and its control, for realizing the transmission of USB3.0 terminal device control instructions, connect with reference to management The existing numerical diagnostic to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals of cause for gossip is managed.

The management interface circuit, is connected to a descending USB2.0 port of USB3.0 HUB main control chips, realizes USB2.0 is converted into RS-232 interface, and RS-232 interface is connected to a RS-232 serial ports of MCU control unit, for realizing Main frame end is managed the numerical diagnostic of USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals.

Said supply unit, it is possible to achieve USB3.0 interfaces are powered to automatically switch with externally fed, is USB3.0 HUB cores Piece, MCU control unit, SFP+ optical modules, management interface, LED indicating circuit, FLASH provide power supply.

The LED indicating circuit, the information such as communications status, SFP+ module status, failure situation for instruction.

By such scheme, the USB3.0 optical fiber receiving terminal, including four USB3.0 downstream interfaces, USB3.0 HUB masters Control chip, FLASH chip, Rx_DET fictitious loads, SFP+ optical modules, MCU control unit, management interface circuit, LED and indicate electricity Road, power supply unit.

The USB3.0 downstream interfaces, for connecting USB3.0 terminal devices.

Preferably, the USB3.0 HUB main control chips connect for the up going port of μ PD720210, USB3.0 HUB main control chips It is connected to SFP+ optical modules, USB3.0 HUB main control chips, including SIE（SIE）, control, processing conversion, relaying, road By parts such as, AES encryption and decryption, for achieving a butt joint into work(such as the routes, data forwarding, power management of USB3.0 terminal devices Can, four downstream interfaces of USB3.0 HUB main control chips are used for connecting the USB3.0 terminal devices of four standards, such as USB3.0 The standard USB3.0 peripheral hardwares such as industrial printer, USB3.0 cameras, USB3.0 mobile hard disks, USB3.0 movement USB flash disks.

The FLASH chip, the configuration data for storing USB3.0 HUB chips.

The Rx_DET fictitious loads, for simulating the Rx_DET electricity of USB3.0 master controller downstream interface Rx inputs Road；According to USB3.0 agreements, the Rx inputs of USB3.0 interfaces must include Rx Detect circuits, and the physical layers of USB 3.0 are at place When U1, U2, U3 state, LFPS (Low Frequency Period Singal) signal conduct is used to save electric power Communication media, LFPS signals are a kind of low-frequency cyclical signals, when USB3.0 HUB main control chips uplink port not with When in the connection of USB3.0 master controllers, the Tx ends of USB3.0 HUB main control chips can ceaselessly send Rx Detect square-wave signals, The square-wave signal is not LFPS signals.If be never connected with USB3.0 master controllers, according to USB3.0 agreements, then Have been in Rx Detect states；When USB3.0 HUB main control chips uplink ports are connected with USB3.0 master controllers, The Tx ends of USB3.0 HUB chips can then send LFPS signals；And the input interface circuit of common SFP+ optical modules does not have The Rx Detect circuits of USB3.0 interface Rx inputs, therefore SFP+ optical modules with USB3.0 HUB chips when being connected, USB3.0 HUB main control chips can be had been in Rx Detect states, it is impossible to the USB3.0 HUB master control cores with USB3.0 optical fiber transmitters Piece downstream interface is communicated, and causes link failure not carry out data transmission, and the Rx_DET fictitious loads in the present invention are For solving the key technology means of this problem.

The SFP+ optical modules, on the one hand, the optical signal for sending over USB3.0 optical fiber transmitting terminals is converted into electric signal It is sent to the upstream Interface Rx inputs of USB3.0 optical fiber receiving terminal USB3.0 HUB main control chips；The opposing party, by USB3.0 optical fiber The electric signal that receiving terminal upstream Interface Tx output ends are sended over is converted into optical signal and is sent to USB3.0 optical fiber transmitting terminal SFP+ light The Rx inputs of module；In addition, transmitting shut-off control Tx_Disable input of the present invention using SFP+ optical module optical transmitters The No Light Alarm signal LOS output pins of pin and photoreceiver combine to form the two-way RS-232 transmission channels of a low rate, by double A numerical diagnostic passage is constituted to RS-232 transmission channels, MCU control unit, management interface, computer passes through numerical diagnostic Passage sends control instruction to realize to the power supply circuit or USB3.0 terminal devices of USB3.0 terminal devices, and right The SFP+ optical modules of USB3.0 optical fiber receiving terminals carry out numerical diagnostic management.

The MCU control unit, for controlling USB3.0 HUB and main frame USB3.0 master controllers to shake hands Connection and chip reset, for controlling power supply unit to realize the power supply control and fault diagnosis of USB3.0 terminal devices, for reality Transmission, the numerical diagnostic for realizing SFP+ optical modules and its control of existing USB3.0 terminal device control instructions, with reference to management Interface, which is realized, to be managed the numerical diagnostic of USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals.

A kind of auto negotiation side to fiber optic communication between USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals Method, refers to solve transmitting USB3.0 data mistakes using optical fiber by the mcu programming technology rule of communication related to formulation Because optical fiber interface fiber break, optical fiber repeat plug, the hot plug of SFP+ optical modules, computer on/off and after restarting in journey USB3.0 terminal devices recalculate the method that machine host sets up correct communication linkage.

USB3.0 fiber optic communications are a full-duplex bi-directional communications, can use two core fibres, or multiple using light wave point Single-core fiber is used with principle, three kinds of situations occur in optical fiber connection procedure, the first is USB3.0 optical fiber transmitting terminals SFP The optical transmitter and light-receiving of the optical transmitter and receiver of+optical module simultaneously with USB3.0 optical fiber receiving terminal SFP+ optical modules Machine sets up connection；Be for second USB3.0 optical fiber transmitting terminal SFP+ optical modules optical transmitter first with USB3.0 optical fiber receiving terminals The photoreceivers of SFP+ optical modules sets up connection, further, the photoreceiver of USB3.0 optical fiber transmitting terminal SFP+ optical modules with The optical transmitter of USB3.0 optical fiber receiving terminal SFP+ optical modules sets up connection；The third is USB3.0 optical fiber transmitting terminal SFP+ optical modes The light-receiving of block is first set up with the optical transmitter of USB3.0 optical fiber receiving terminal SFP+ optical modules and is connected, further, USB3.0 light The optical transmitter of fine transmitting terminal SFP+ optical modules is set up with the photoreceiver of USB3.0 optical fiber receiving terminal SFP+ optical modules and is connected.

If because optical fibre damage or it is artificial optical fiber is extracted caused by optical fiber disconnecting, it is necessary to re-start optical fiber During connection, main frame needs to re-establish to be connected with the USB3.0 HUB main control chips of distal end USB3.0 optical fiber receiving terminals, Now both sides can initiate low speed LFPS signals again and shake hands connection, so that it is determined that connection status, if but now USB3.0 The USB3.0 HUB main control chips of optical fiber receiving terminal do not exit ultrahigh speed linking status also, when there is the first and the third situation When, what the USB3.0 HUB main control chip downstream interfaces of USB3.0 optical fiber transmitting terminals were received is not LFPS data-signals, but super High speed packet, so may result in negotiation failure, causes computer to connect the USB3.0 master controls of this USB3.0 optical fiber transmitting terminal Device port processed is crashed, so that the USB3.0 HUB main control chips of None- identified USB3.0 optical fiber transmitting terminals, USB3.0 optical fiber are received The USB3.0 HUB main control chips and the terminal device of circumscribed USB 3.0 at end.

USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals often run into main frame pass in communication process Machine, restart, main frame has shut down and turned back on after some time, the problem of thus facing sternness：As calculating owner Machine is reentered after operating system, often occurs that USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal calculate owner with working as Machine connection failure, main frame is possible to that USB3.0 equipment can be pointed out to close rule but can not link or not link at all Action, the reason for causing this problem is USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber after main frame logs off The communications status of receiving terminal is simultaneously introduced into LFPS negotiation states, and is constantly in normal ultrahigh speed link, works as main frame Reenter after system, the USB3.0 master controllers of main frame should be that a low rate is led to USB3.0 optical fiber transmitting terminals Letter pattern, but actual computer main frame USB3.0 master controllers receive first is that USB3.0 optical fiber transmitting terminals are sended over Ultrahigh speed data bag, so as to cause both negotiations to fail, main frame can not find the external institute of USB3.0 master controllers There are USB3.0 terminal devices.

In order to solve problem above, we arrange a kind of to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals herein Between fiber optic communication auto negotiation method：No matter whenever, the light-receiving of the SFP+ optical modules of USB3.0 optical fiber receiving terminals Photoreceiver of the machine always prior to the SFP+ optical modules of USB3.0 optical fiber transmitting terminals receives optical signal；USB3.0 optical fiber receiving terminals Photoreceiver is after optical fiber disconnecting, and MCU control unit hair output control instruction makes USB3.0 HUB main control chips are up to connect Mouth link disconnects, and USB3.0 HUB main control chips enter holding state, and make the light of USB3.0 optical fiber receiving terminal SFP+ optical modules Transmitter is in transmitting illegal state, and optical signal will not be sent completely and is come out, even if optical fiber is reconnected normally, in USB3.0 light The USB3.0 HUB main control chips of fine receiving terminal are not completed also can be in transmitting illegal state before link initialization；Optical fiber disconnects The photoreceiver of USB3.0 optical fiber transmitting terminal can not receive optical signal afterwards, and MCU control unit hair output control instruction makes USB3.0 light The USB3.0 master controllers link connection of fine transmitting terminal USB3.0 upstream Interfaces and main frame is interrupted；When USB3.0 optical fiber connects The photoreceiver of receiving end is after optical fiber reconnect, and MCU control unit hair output control instruction makes USB3.0 HUB main control chips Into normal operating conditions, chip link state, the output of USB3.0 HUB main control chip upstream Interface Tx output ends are initialized LFPS signals, MCU control unit hair output control instruction is in the optical transmitter of USB3.0 optical fiber receiving terminal SFP+ optical modules Launch enabled state, the normal LFPS optical signals that send come out, and the photoreceiver of USB3.0 optical fiber transmitting terminals receives LFPS optical signals Afterwards, MCU control unit hair output control instruction makes USB3.0 optical fiber transmitting terminal USB3.0 upstream Interfaces and main frame The link of USB3.0 master controllers is connected, and carries out LFPS negotiations with main frame again, until communication connection is normal；Work as production USB3.0 optical fiber, which sends terminal circuit, after raw main frame shutdown can monitor the link with main frame USB3.0 controllers State, MCU control unit hair can make according to the corresponding control instruction of Link State output to main frame USB3.0 controllers The communication link of USB3.0 optical fiber transmitting terminal USB3.0 upstream Interfaces and main frame is off, USB3.0 optical fiber hair The USB3.0 HUB main control chips of sending end can enter holding state, and be sent out to the USB3.0 main control chips of USB3.0 optical fiber receiving terminals LFPS negotiation signals are sent, allows and is both in holding state；When producing, main frame shut down, restarted, main frame shuts down USB3.0 optical fiber, which sends terminal circuit, when turning back on afterwards can monitor the Link State with main frame USB3.0 controllers, The MCU control unit hair of USB3.0 optical fiber transmitting terminals can export phase according to the Link State of main frame USB3.0 controllers Control instruction is answered, USB3.0 optical fiber transmitting terminal USB3.0 upstream Interfaces is in correct connection status with main frame, when Monitor computer USB3.0 controllers to initiate after LFPS negotiations, USB3.0 optical fiber transmitting terminal MCU control units make USB3.0 light The link of fine transmitting terminal USB3.0 upstream Interfaces and main frame USB3.0 master controllers is connected, and is sent to main frame LFPS signals carry out communication negotiation, until communication connection is normal；After USB3.0 optical fiber transmitting terminal communicates normally with main frame, The USB3.0 HUB master controls core of USB3.0 optical fiber transmitting terminals can be sent to the USB3.0 main control chips of USB3.0 optical fiber receiving terminals LFPS negotiation signals, until communication connection is normal.

Data flow of the ultrahigh speed USB3.0 terminal devices in communication process must be all encoded into as defined in USB3.0 standards Ultrahigh speed data stream is transmitted, because USB3.0 standards do not reserve the I/O channel of some low rates, therefore, in USB3.0 light During fiber communication, in order to ensure compatibility and general applicability, fibre optic transmission equipment will not be to USB3.0 again encoding and decoding, only It is that the USB3.0 electric signals that will be received carry out the conversion of electrical-optical-electrical, fibre optic transmission equipment will not add any attached in a stream Plus data, USB3.0 signals in transmitting procedure are transparent using fibre optic transmission equipment.Therefore, for such as remote switch Control, the transmission of digital diagnosis signal and result passback can not all be completed by USB3.0 hardware circuit, so the present invention is just It is to be based on this practical application, it is proposed that a kind of that numerical diagnostic is carried out to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal And the method for USB3.0 terminal unit remotes control.

It is described a kind of to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal progress numerical diagnostic and USB3.0 terminals The method of equipment remote control, refers to the transmitting shut-off control SFP_Tx_Disable inputs using SFP+ optical module optical transmitters The No Light Alarm signal SFP_LOS output pins of pin and photoreceiver combine to form the two-way RS-232 transmission channels of a low rate, One numerical diagnostic passage is constituted by two-way RS-232 transmission channels, MCU control unit, management interface, computer passes through numeral Diagnosis passage sends to realize to the control interface of the power supply circuit or USB3.0 terminal devices of USB3.0 terminal devices in itself Control instruction, and numerical diagnostic management is carried out to the power supply state of SFP+ optical modules, terminal device.

With reference to SMALL FORM-FACTOR PLUGGABLE (SFP) TRANSCEIVER MULTISOURCE AGREEMENT (MSA) international standard, the transmitting shut-off control SFP_Tx_Disable input pins of SFP+ optical module optical transmitters It is the luminance for being switched on and off SFP+ optical module optical transmitter lasers, when the pin is high level, laser Do not light, when the pin is low level, laser lights, the transmitting shut-off control signal electricity when SFP+ optical module normal works It is flat to always remain as it is low；And the No Light Alarm signal SFP_LOS output pins of SFP+ optical module photoreceivers are in no optical signal When being input to photoreceiver, No Light Alarm signal SFP_LOS output pins export a high level signal, there is optical signal input When to photoreceiver, No Light Alarm signal SFP_LOS output pins export a low level signal, and the signal is used only to sentence The presence or absence of disconnected input optical signal, in normal light communication process, the signal is to maintain low level always；The two control script bodies There is no the function of bidirectional data communication, but we can input one in transmitting shut-off control SFP_Tx_Disable input pins The rs 232 serial interface signal of the digital square-wave of low rate, such as 9600bps, then SFP+ optical modules optical transmitter can be according to the low rate The change of digital square-wave low and high level produce the unglazed state change for sending and thering is light to send, so as to modulate The optical signal of 9600bps low rates, and in the No Light Alarm signal SFP_LOS output pin meetings of correspondence SFP+ optical module photoreceivers According to unglazed input and the state change for thering is light to input, original 9600bps rs 232 serial interface signal is restored；Therefore, SFP+ optical modes The transmitting shut-off control SFP_Tx_Disable input pins of block optical transmitter and the No Light Alarm signal SFP_LOS of photoreceiver are defeated Going out pin can combine to form the two-way RS-232 transmission channels of a low rate, be controlled by two-way RS-232 transmission channels, MCU single Member, management interface constitute a numerical diagnostic passage, and numerical diagnostic passage is not in the case of USB3.0 link proper communications Work, numerical diagnostic passage only before USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal initial connection establishments, USB3.0 terminal devices break down and can be just operated when being artificially controlled, and operating personnel are in computer terminal Corresponding management operation is can be carried out with USB3.0 equipment ends.

When we occur that equipment deadlock can not be by meter or other once in a while during using USB3.0 terminal devices When calculating owner's generator terminal recovery USB3.0 terminal devices to normal operating conditions, we can be connect by numerical diagnostic passage to management Mouth sends specific instruction to control interface of USB3.0 terminal devices itself or is connected USB3.0 ends with USB3.0 terminal devices The power supply circuit of mouth, carries out cold start-up, so as to recover normal, we can also be connect by numerical diagnostic passage to management to equipment Mouth sends specific instruction to the failure situation of USB3.0 terminal devices control interface acquisition USB3.0 terminal devices itself.

Before USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal initial connection establishments, USB3.0 optical fiber is received The MCU control unit at end reads the transmitting luminous power of optical module, the biased electrical of laser by the I2C buses of SFP+ optical modules After the optical module indexs such as stream, receiving sensitivity, the supply voltage of optical module, operating temperature, failure situation, pass through USB3.0 optical fiber The RS-232 serial ports of the MCU control unit of receiving terminal sends signal to the SFP_Tx_Disable input pins of SFP+ optical modules, Modulation output RS232 optical signals, and export RS-232 in the SFP_LOS output pins of USB3.0 optical fiber transmitting terminal numerical diagnostic passages Serial data, RS-232 serial datas are transported to the serial ports of the MCU control unit numerical diagnostic passage of USB3.0 optical fiber transmitting terminals Signal input pin LOS_232_RXD, is sent to main frame end after being handled through MCU control unit；In addition, we can also be in meter Calculate owner's generator terminal and RS-232 signals, RS-232 are converted instructions into by the USB2.0 to RS232 change-over circuits of management interface The MCU for sending numerical diagnostic request instruction to USB3.0 optical fiber transmitting terminals by the RS232_TXD output pins of management interface is controlled The RS-232 rs 232 serial interface signal input pin CMI_RS232_RXD of unit processed, MCU control unit is sent by numerical diagnostic passage and instructed To the rs 232 serial interface signal input pin LOS_232_RXD of the MCU control unit of USB3.0 optical fiber receiving terminals, receive MCU after instruction and control Unit passes back to the optical module index read by numerical diagnostic passage the MCU control unit of USB3.0 optical fiber transmitting terminals Rs 232 serial interface signal input pin LOS_232_RXD, passes through RS-232 rs 232 serial interface signal output pins CMI_ after being handled through MCU control unit RS232_TXD is sent to the input pin RS232_RXD by management interface, is sent to after being changed by USB2.0 to RS232 Main frame end；For the optical module index of USB3.0 optical fiber transmitting terminals, we can cross management at main frame end The MCU control unit that interface sends numerical diagnostic request instruction to USB3.0 optical fiber transmitting terminals is directly obtained；Pass through both sides Method can realize the numerical diagnostic management to SFP+ optical modules；In addition when the USB3.0 terminal devices of USB3.0 optical fiber receiving terminals are supplied When electricity produces over current fault, MCU control unit can store this failure code, and institute can be just removed until over current fault is released Failure code is deposited, when we have found that equipment work is abnormal, management interface transmission numeral can be crossed at main frame end and is examined The MCU control unit of disconnected request instruction to USB3.0 optical fiber receiving terminals obtains USB3.0 terminal equipment failure codes.

The beneficial effects of the invention are as follows：A variety of USB3.0 terminal devices and meter are supported based on optical fiber transmission there is provided one kind The USB3.0 HUB of long-distance transmissions between calculation machine, transmission range can reach 300 meters to 400 meters, can using multimode fibre, Single-mode fiber can also be used, twin-core fiber can be used, it would however also be possible to employ single-core fiber；Using can be with the SFP+ light of hot plug Module, SFP+ optical modules can be changed in the case where not powering off, and operation and maintenance is very convenient for, and optical fiber Length can be connected up according to actual needs；It can not only realize that a variety of USB3.0 terminal devices are connected with main frame, Er Qieke To realize the condition monitoring of SFP+ optical modules by digital diagnostics circuitry and carry out remote operation, this hair to USB3.0 terminal devices Bright transmitted data are primary USB3.0 data formats, will not be by USB3.0 master controllers, USB3.0 HUB main control chips The primary USB3.0 data conversions sent with USB3.0 terminal devices into other forms new encoding and decoding of laying equal stress on are transmitted again, therefore Its transmission is transparent, and all terminal peripheral hardwares for meeting USB3.0 standards can be connected normally, and the present invention is in extension While USB3.0 transmission ranges, also there is transmission channel without electromagnetic leakage, electromagnetism interference.

Brief description of the drawings

Fig. 1 is the system application principle block diagram of the present invention.

Fig. 2 is the USB3.0 optical fiber transmitting terminal theory diagrams of the present invention.

Fig. 3 is the USB3.0 optical fiber transmitting terminal USB3.0 HUB main control chip theory diagrams of the present invention.

Fig. 4 is the USB3.0 optical fiber transmitting terminal Rx_DET fictitious loads of the present invention.

Fig. 5 is the USB3.0 optical fiber transmitting terminal SFP+ optical modules of the present invention.

Fig. 6 is the USB3.0 optical fiber transmitting terminal MCU control units of the present invention.

Fig. 7 is the USB3.0 optical fiber transmitting terminal power supply units of the present invention.

Fig. 8 is the USB3.0 optical fiber transmitting terminal management interfaces of the present invention.

Fig. 9 is the USB3.0 optical fiber receiving terminal theory diagrams of the present invention.

Figure 10 is the USB3.0 optical fiber receiving terminal USB3.0 HUB main control chip theory diagrams of the present invention.

Figure 11 is the USB3.0 optical fiber receiving terminal Rx_DET fictitious loads of the present invention.

Figure 12 is the USB3.0 optical fiber receiving terminal SFP+ optical modules of the present invention.

Figure 13 is the USB3.0 optical fiber receiving terminal MCU control units of the present invention.

Figure 14 is the USB3.0 optical fiber receiving terminal power supply units of the present invention.

Figure 15 is the USB3.0 optical fiber receiving terminal management interfaces of the present invention.

Embodiment

To more fully understand the present invention, the invention will be further described with reference to the accompanying drawings and examples.It can manage Solution, specific embodiment described herein is used only for explaining the present invention, rather than limitation of the invention.Further need exist for Illustrate, illustrate only part related to the present invention for the ease of description, in accompanying drawing and not all circuit structure.

The present invention supports long-distance transmissions between a variety of USB3.0 terminal devices and computer to be a kind of based on optical fiber transmission USB3.0 HUB；As shown in Fig. 1, main frame is arrived in the one end of USB3.0 optical fiber transmitting terminal 1 by USB3.0 cable connections USB3.0 master controllers 3, the other end is connected to USB3.0 optical fiber receiving terminal 2 by optical fiber；The one end of USB3.0 optical fiber receiving terminal 2 USB3.0 optical fiber transmitting terminal 1 is connected to by optical fiber, the downstream interface of USB3.0 optical fiber receiving terminal 2 can be with by USB3.0 cables USB3.0 mobile hard disks, USB3.0 cameras, USB3.0 printers are connected to simultaneously, other standard USB3.0 can also be connected whole End；The present invention utilizes the hypervelocity data difference interface of USB3.0 interfaces：SSTX+/- and SSRX+/- realize USB3.0 superelevation Fast communication linkage, transmission range can reach 300 meters to 400 meters, and the data that the present invention is transmitted are primary USB3.0 data Form, the primary USB3.0 that USB3.0 master controllers, USB3.0 HUB main control chips and USB3.0 terminal devices will not be sent Data conversion is transmitted again into the new encoding and decoding of laying equal stress on of other forms, thus its transmission be it is transparent, it is all to meet USB3.0 The terminal peripheral hardware of standard can be connected normally.

Reference picture 2-8, describes USB3.0 optical fiber transmitting terminal 1 in detail.

As shown in Fig. 2 USB3.0 optical fiber transmitting terminal 1, including USB3.0 upstream Interfaces 11, a USB3.0 HUB master control cores Piece 12, Rx_DET fictitious loads 13, SFP+ optical modules 14, power supply unit 15, MCU control unit 16, LED indicating circuit 17, pipe Manage interface circuit 18, FLASH chip 19.

The connection of USB3.0 HUB main control chips 12 and other circuits：The external FLASH chip of FLASH data/address bus 1212 19；Upstream Interface U3H_RX+/- differential pair 1213 and U3H_TX+/- differential pair 1214 are connected to USB3.0 upstream Interfaces 11；Under The USB3-TX1+ of row port 1/- differential pair 1222 is connected to the high-speed differential signal input 131 of RX_DET fictitious loads 13； The high-speed differential signal output end 132 of RX_DET fictitious loads 13 is connected to TX+/- input 146 of SFP+ optical modules 14, under The USB3-RX1+ of row port 1/- differential pair 2223 is connected to RX+/- output end 147 of SFP+ optical modules 14；USB3.0 is up to be connect Confession piezoelectric voltage VBUS monitoring signal VBUS_DET input pins 1215 are connected to the VBUS control signals VBUS_ of MCU control unit DET output pins 1634, this signal is used for controlling the communication negotiation of USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals；Reset On the one hand signal RST_USB inputs 1216 connect external reset circuit, are on the other hand connected to the USB3.0 of MCU control unit 16 HUB reset signal RST_USB output pins 1633, have in other circuits illustrate and are connected with explanation to our department's sub-signal, herein It is not described in detail.

The connection of the pin of SFP+ optical modules 14 and other circuits：I2C bus clock signal SFP_SCL pins 141 are connected to The clock signal SFP_SCL pins 1611 of MCU control unit 16, I2C data signal bus SFP_SDA pins 142 are connected to MCU The data-signal SFP_SDA pins 1612 of control unit 16；The transmitting cut-off signals SFP_TxDisable of SFP+ optical modules 14 is defeated Enter the SFP_TxDisable output pins 1613 that pin 143 is connected to MCU control unit 16；The transmitting event of SFP+ optical modules 14 Barrier indicates that SFP_TxFault output pins 144 are connected to the SFP_TxFault input pins 1614 of MCU control unit 16； SFP The insertion detection pin 143 of+optical module 14 is connected to the SFP_TxDisable output pins 1613 of MCU control unit 16； SFP The SFP_ that indicating fault SFP_TxFault output pins 144 are connected to MCU control unit 16 is closed in the transmitting of+optical module 14 TxFault input pins 1614；The No Light Alarm signal LOS output pins 145 of SFP+ optical modules 14 are connected to MCU control unit 16 LOS input pins 1615 and LOS_232_RXD input pins 1638；The optical module plug detection signal of SFP+ optical modules 14 MOD_IN output pins 148 are connected to the MOD_IN input pins 1616 of MCU control unit 16.The light of SFP+ optical modules 14 is sent The optical module optical transmission circuit that circuit supply input SFP_VCCT pins 149 are connected to power supply unit 15 power SFP_VCCT output Pin 1522；The optical receiving circuit supply input SFP_VCCR pins 140 of SFP+ optical modules 14 are connected to the light of power supply unit 15 Module optical receiving circuit is powered SFP_VCCR output pins 1523, has in other circuits explanation and our department's sub-signal is connected with Bright, it is not described in detail herein.

The connection of power supply unit 15 and other circuits：The connection externally fed of externally fed EXT_5V pins 1515 source; USB Bus-powered USB_5V pins 1516 are connected to the power supply output pin of usb bus power supply chip, and the chip model is SP2525A-2E, chip output voltage during the enable pin low level of the chip;Usb bus supplies power detection signal USB_PWR_ The usb bus that DET output pins 1511 are connected to MCU control unit 16 supplies power detection signal USB_PWR_DET input pins 1636；The USB that usb bus power supply chip enable signal PWR_SW input pins 1512 are connected to MCU control unit 16 is total The enable PWR_SW output pins 1632 of line power supply chip, when PWR_SW is low level, usb bus power supply chip output power supply electricity Pressure；Usb bus power supply chip current overload signal USB_PWR_FL output pins 1513 are connected to MCU control unit 16 The current overload signal USB_PWR_FL input pins 1637 of usb bus power supply chip；When no external power source is powered, USB_ PWR_DET keeps output low level, and the PWR_SW of MCU control unit 16 exports a low level and enables signal to power supply unit 15 PWR_SW input, now, usb bus power supply chip output supply voltage；When there is external power source to power, USB_PWR_DET Output high level is kept, the PWR_SW of MCU control unit 16 exports a high level and enables PWR_ of the signal to power supply unit 15 SW is inputted, and now, usb bus power supply chip does not work, and is powered by external power source to whole circuit；MCU control unit 16 is powered VCC_MU output pins 1524 are connected to one inside the power supply VCC_MCU input pins 1631 of MCU control unit 16, power supply unit The positive pole of individual diode is connected to EXT_5V, and the negative pole of the diode is connected to VCC_MU, the positive pole connection of another diode To USB_5V, the negative pole of the diode is connected to VCC_MU, MCU control unit 16 simultaneously from USB interface and external power source power taking, The power supply of MCU control unit 16 is preferentially supplied, i.e., do not influenceed by power switching circuit；The power supply of management interface 18 VCC_ CMI output pins 1525 are connected to the power supply VCC_CMI input pins 182 of management interface 18；The power supply VCC_ of power supply unit 15 HUB output pins 1526 are connected to the power supply VCC_HUB input pins 1211 of USB3.0 HUB main control chips 12；SFP+ optical modules 14 Power supply enables the SFP_PWR_EN output pins that signal SFP_PWR_EN input pins 1514 are connected to MCU control unit 16 1635, have in other circuits illustrate and explanation is connected with to our department's sub-signal, be not described in detail herein.

The connection of management interface 18 and other circuits：Management interface 18 have two-way USB2.0 signals input, two-way letter Number it can automatically switch, USB2.0 signals USB2.0_A+/- input port 180 is connected to the master controller of external USB 2.0 all the way, Another road USB2.0 signals USB2.0_B+/- input port 181 is connected to the downlink port 4 of USB3.0 HUB main control chips 12 USB2.0 signals USB2-4+/- differential pair 1224, by USB2.0 to RS-232 conversion chips, so as to increase on PC main frames One RS-232 manages serial ports；The serial ports of management interface 18 sends data RS232_TXD pins 184 and is connected to MCU control unit 16 CMI_RS232_RXD input pins 1617；The serial ports of management interface 18 receives data RS232_RXD pins 183 and is connected to The CMI_RS232_TXD input pins 1616 of MCU control unit 16, have in other circuits explanation and our department's sub-signal are connected with Illustrate, be not described in detail herein.

MCU control unit 16 has an online programming and upgrade interface, and ISP_RS232_TXD output pins 2643 are connected to The RXD of main frame RS-232 interface；ISP_RS232_RXD output pins 2644 are connected to main frame RS-232 interface TXD, have in other circuits illustrate and explanation be connected with to our department's sub-signal, be not described in detail herein.

Reference picture 9-15, describes USB3.0 optical fiber receiving terminal 2 in detail.

As shown in figure 9, USB3.0 optical fiber receiving terminal 2, including USB3.0 DEVICE downstream interfaces unit 21, USB3.0 HUB main control chips 22, Rx_DET fictitious loads 23, SFP+ optical modules 24, power supply unit 25, MCU control unit 26, LED indicating circuit 27, management interface circuit 28, FLASH chip 29.

The pin of USB3.0 HUB main control chips 22 and the connection of other circuits：FLASH data/address bus 2212 is external FLASH chip 29；Hypervelocity sends signal U3H_TX+/- differential pair 2213, is connected to the high-speed-differential of RX_DET fictitious loads 23 Signal input part 231；The high-speed differential signal output end 232 of RX_DET fictitious loads 23 is connected to the TX of SFP+ optical modules 24 +/- input 246；Hypervelocity receives RX+/- output end that signal U3H_RX+/- differential pair 2214 is connected to SFP+ optical modules 24 247；USB3.0 upstream Interface supply voltage VBUS monitoring signal VBUS_DET input pins 2215 are connected to MCU control unit VBUS control signal VBUS_DET output pins 2634, this signal is used for controlling USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber to receive The communication negotiation at end；On the one hand reset signal RST_USB inputs 2216 connect external reset circuit, are on the other hand connected to MCU The USB3.0 HUB reset signal RST_USB output pins 2633 of control unit 26；The power supply of downstream interface port 1 enables PPON1 letters The power supply of downlink port 1 that number output pin 2231 is connected to power supply unit enables DP_PWEN1 signal input pins 2527；Downstream interface The power supply of port 2 enables the power supply of the downlink port 2 enable DP_PWEN1 letters that PPON2 signal outputs pin 2233 is connected to power supply unit Number input pin 2528；The power supply of downstream interface port 3 enables the downstream end that PPON3 signal outputs pin 2235 is connected to power supply unit 3 power supplys of mouth enable DP_PWEN3 signal input pins 2529；The power supply of downstream interface port 4 enables PPON4 signal outputs pin 2237 and connected The power supply of downlink port 4 for being connected to power supply unit enables DP_PWEN4 signal input pins 2530；The over-current signal of downstream interface port 1 OVCI1 input pins 2232 are connected to the over-current signal DP_OVCI1 output pins 2531 of downlink port 1 of power supply unit；Downstream interface The over-current signal OVCI2 input pins 2234 of port 2 are connected to the over-current signal DP_OVCI2 output pins of downlink port 2 of power supply unit 2532；The over-current signal OVCI3 input pins 2236 of downstream interface port 3 are connected to the over-current signal of downlink port 3 of power supply unit DP_OVCI3 output pins 2533；The over-current signal OVCI4 input pins 2238 of downstream interface port 4 are connected to the descending of power supply unit The over-current signal DP_OVCI1 output pins 2534 of port 4；Differential pair USB3-TX1+/- signal output 2222 and USB3-RX1+/- letter Number input 2223 is connected to downstream interface 1；Differential pair USB3-TX2+/- signal output 2224 and USB3-RX2+/- signal input 2225 are connected to downstream interface 2；Differential pair USB3-TX3+/- signal output 2226 and USB3-RX3+/- signal input 2227 connect It is connected to downstream interface 3；Differential pair USB3-TX4+/- signal output 2228 and USB3-RX4+/- signal input 2229 are connected to down Line interface 4, has in other circuits illustrate and is connected with explanation to our department's sub-signal, be not described in detail herein.

The connection of the pin of SFP+ optical modules 24 and other circuits：I2C bus clock signal SFP_SCL pins 241 are connected to The clock signal SFP_SCL pins 2611 of MCU control unit 26, I2C data signal bus SFP_SDA pins 242 are connected to MCU The data-signal SFP_SDA pins 2612 of control unit 26；The transmitting cut-off signals SFP_TxDisable of SFP+ optical modules 24 is defeated Enter the SFP_TxDisable output pins 2613 that pin 243 is connected to MCU control unit 26；The transmitting event of SFP+ optical modules 24 Barrier indicates that SFP_TxFault output pins 244 are connected to the SFP_TxFault input pins 2614 of MCU control unit 26； SFP The insertion detection pin 243 of+optical module 24 is connected to the SFP_TxDisable output pins 2613 of MCU control unit 26； SFP The SFP_ that indicating fault SFP_TxFault output pins 244 are connected to MCU control unit 26 is closed in the transmitting of+optical module 24 TxFault input pins 2614；The No Light Alarm signal LOS output pins 245 of SFP+ optical modules 24 are connected to MCU control unit 26 LOS input pins 2615 and LOS_232_RXD input pins 2616；The optical module plug detection signal of SFP+ optical modules 24 MOD_IN output pins 248 are connected to the MOD_IN input pins 2617 of MCU control unit 26.The light of SFP+ optical modules 24 is sent The optical module optical transmission circuit that circuit supply input SFP_VCCT pins 249 are connected to power supply unit 25 power SFP_VCCT output Pin 2522；The optical receiving circuit supply input SFP_VCCR pins 240 of SFP+ optical modules 24 are connected to the light of power supply unit 25 Module optical receiving circuit is powered SFP_VCCR output pins 2523, has in other circuits explanation and our department's sub-signal is connected with Bright, it is not described in detail herein.

The connection of power supply unit 25 and other circuits：The connection externally fed of externally fed EXT_5V pins 2515 source;By External power source is powered to whole circuit；The power supply VCC_MU of MCU control unit 26 output pins 2524 are connected to MCU control unit 26 Power supply VCC_MCU input pins 2621；The power supply VCC_CMI of management interface 28 output pins 2525 are connected to management interface 28 Power supply VCC_CMI input pins 282；The power supply VCC_HUB output pins 2526 of power supply unit 25 are connected to USB3.0 HUB master controls The power supply VCC_HUB input pins 2211 of chip 22；The power supply of SFP+ optical modules 24 enables signal SFP_PWR_EN input pins 2521 are connected to the SFP_PWR_EN output pins 2625 of MCU control unit 26；The excessively stream letter of the downlink port 1 of power supply unit 25 Number DP_OVC1_MCU output pins are connected to the DP_OVC1_MU input pins 2630 of input pin MCU control unit 26；Power supply The over-current signal DP_OVC2_MCU output pins of the downlink port 2 of unit 25 are connected to input pin MCU control unit 26 DP_OVC2_MU input pins 2631；The over-current signal DP_OVC3_MCU output pins connection of the downlink port 3 of power supply unit 25 To the DP_OVC3_MU input pins 2632 of input pin MCU control unit 26；The excessively stream letter of the downlink port 4 of power supply unit 25 Number DP_OVC4_MCU output pins are connected to the DP_OVC4_MU input pins 2633 of input pin MCU control unit 26；Power supply Long-range cold start controlling signals DP _ PWEN1_MCU output pins 2540 of the downlink port 1 of unit 25 are connected to input pin The DP_ PWEN1_MU input pins 2634 of MCU control unit 26；The long-range cold start controlling of the downlink port 2 of power supply unit 25 Signals DP _ PWEN2_MCU output pins 2541 are connected to the DP_ PWEN2_MU input pins of input pin MCU control unit 26 2635；Long-range cold start controlling signals DP _ PWEN3_MCU output pins 2542 of the downlink port 3 of power supply unit 25 are connected to The DP_ PWEN3_MU input pins 2636 of input pin MCU control unit 26；The downlink port 4 of power supply unit 25 it is long-range cold Start the DP_ PWEN4_MU that control signal DP_PWEN1_MCU output pins 2543 are connected to input pin MCU control unit 26 Input pin 2637, has in other circuits illustrate and is connected with explanation to our department's sub-signal, be not described in detail herein.

The connection of management interface 28 and other circuits：USB2.0 signals USB2.0-4+/- input port of management interface 28 281 are connected to the USB2.0 ports of outer computer main frame, by USB2.0 to RS-232 conversion chips, so that in outside meter Calculate one RS-232 management serial ports of increase on machine host；The serial ports of management interface 28 sends data RS232_TXD pins 284 and connected To the CMI_RS232_RXD input pins 2642 of MCU control unit 26；The serial ports of management interface 28 receives data RS232_RXD Pin 283 is connected to the CMI_RS232_TXD input pins 2641 of MCU control unit 26, has in other circuits explanation to this Part signal connection is described, and is not described in detail herein.

MCU control unit 26 has an online programming and upgrade interface, and ISP_RS232_TXD output pins 2643 are connected to The RXD of main frame RS-232 interface；ISP_RS232_RXD output pins 2644 are connected to main frame RS-232 interface TXD, have in other circuits illustrate and explanation be connected with to our department's sub-signal, be not described in detail herein.

It is described more detail below a kind of to fiber optic communication between USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals The specific implementation of auto negotiation method.

USB3.0 fiber optic communications are a full-duplex bi-directional communications, can use two core fibres, or multiple using light wave point Single-core fiber is used with principle, three kinds of situations occur in optical fiber connection procedure, the first USB3.0 optical fiber transmitting terminal 1 The optical transmitter and receiver of SFP+ optical modules 14 are sent with the light simultaneously with the SFP+ optical modules 24 of USB3.0 optical fiber receiving terminal 2 Machine and photoreceiver set up connection；Be for second USB3.0 optical fiber transmitting terminal 1 SFP+ optical modules 14 optical transmitter first with The photoreceiver of the SFP+ optical modules 24 of USB3.0 optical fiber receiving terminal 2 sets up connection, further, USB3.0 optical fiber transmitting terminal 1 The optical transmitters of photoreceiver and the SFP+ optical modules 24 of USB3.0 optical fiber receiving terminal 2 of SFP+ optical modules 14 set up and be connected； The third is the SFP+ light of the light-receiving of the SFP+ optical modules 14 of USB3.0 optical fiber transmitting terminal 1 first with USB3.0 optical fiber receiving terminal 2 The optical transmitter of module 24 sets up connection, further, the optical transmitter of the SFP+ optical modules 14 of USB3.0 optical fiber transmitting terminal 1 with The photoreceiver of the SFP+ optical modules 24 of USB3.0 optical fiber receiving terminal 2 sets up connection.

If because optical fibre damage or it is artificial optical fiber is extracted caused by optical fiber disconnecting, it is necessary to re-start optical fiber During connection, the USB3.0 HUB main control chips 22 of main frame and distal end USB3.0 optical fiber receiving terminal 2 need the company of re-establishing Connect, now both sides can initiate low speed LFPS signals again and carry out connection of shaking hands, so that it is determined that connection status, if but now The USB3.0 HUB main control chips 22 of USB3.0 optical fiber receiving terminal 2 do not exit ultrahigh speed linking status also, when occur the first and During the third situation, what the downstream interface of USB3.0 HUB main control chips 12 of USB3.0 optical fiber transmitting terminal 1 was received is not LFPS numbers It is believed that number, but Ultrahigh speed data bag, negotiation failure is so may result in, causes computer to connect this USB3.0 optical fiber transmitting terminal 1 port of USB3.0 master controllers 3 is crashed, so that the USB3.0 HUB main control chips of None- identified USB3.0 optical fiber transmitting terminal 1 12nd, the USB3.0 HUB main control chips 22 and the terminal device of circumscribed USB 3.0 of USB3.0 optical fiber receiving terminal 2.

USB3.0 optical fiber transmitting terminal 1 and USB3.0 optical fiber receiving terminal 2 often run into main frame in communication process Shut down, restart, main frame has shut down and turned back on after some time, the problem of thus facing sternness：Work as computer Main frame is reentered after operating system, often occurs that USB3.0 optical fiber transmitting terminal 1 and USB3.0 optical fiber receiving terminal 2 are calculated with working as Machine host connection failure, main frame is possible to that USB3.0 equipment can be pointed out to close rule but can not link or at all not have Link is acted, and the reason for causing this problem is USB3.0 optical fiber transmitting terminal 1 and USB3.0 after main frame logs off The communications status of optical fiber receiving terminal 2 is simultaneously introduced into LFPS negotiation states, and is constantly in normal ultrahigh speed link, works as computer Main frame is reentered after system, and the USB3.0 master controllers 3 of main frame should be one low with USB3.0 optical fiber transmitting terminal 1 Rate communication pattern, but actual computer main frame USB3.0 master controllers 3 receive first is that USB3.0 optical fiber transmitting terminal 1 is sent out The Ultrahigh speed data bag brought, so as to cause both negotiations to fail, main frame can not find USB3.0 master controllers 3 External all USB3.0 terminal devices.

In order to solve problem above, we arrange a kind of to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals herein Between fiber optic communication auto negotiation method：No matter whenever, the light of the SFP+ optical modules 14 of USB3.0 optical fiber receiving terminal 1 connects Photoreceiver of the receipts machine always prior to the SFP+ optical modules 24 of USB3.0 optical fiber transmitting terminal 2 receives optical signal；USB3.0 optical fiber connects The photoreceiver of receiving end 1 is after optical fiber disconnecting, and the hair output control instruction of MCU control unit 16 makes USB3.0 HUB master controls The upstream Interface link of chip 22 disconnects, and USB3.0 HUB main control chips 22 enter holding state, and make USB3.0 optical fiber receiving terminal 2 SFP+ optical modules 24 optical transmitter be in transmitting illegal state, optical signal will not be sent completely and is come out, even if optical fiber is again Connection is normal, can also locate before the USB3.0 HUB main control chips 22 of USB3.0 optical fiber receiving terminal 2 do not complete link initialization In transmitting illegal state；The photoreceiver of USB3.0 optical fiber transmitting terminal 1 can not receive optical signal, MCU control unit after optical fiber disconnects 16 hair output control instructions make the USB3.0 main controls of the USB3.0 upstream Interfaces and main frame of USB3.0 optical fiber transmitting terminal 1 The link connection of device 3 is interrupted；After the photoreceiver of USB3.0 optical fiber receiving terminal 2 is reconnected in optical fiber, MCU control unit 26 Hair output control instruction makes USB3.0 HUB main control chips 22 enter normal operating conditions, initializes chip link state, The upstream Interface Tx output ends of USB3.0 HUB main control chips 22 export LFPS signals, the hair output control instruction of MCU control unit 26 The optical transmitter of the SFP+ optical modules 24 of USB3.0 optical fiber receiving terminal 2 is set to be in transmitting enabled state, it is normal to send LFPS light letter Number out, the photoreceiver of USB3.0 optical fiber transmitting terminal 1 is received after LFPS optical signals, MCU control unit 16 hair output control refer to Order makes the USB3.0 upstream Interfaces of USB3.0 optical fiber transmitting terminal 1 be connected with the link of main frame USB3.0 master controllers 3, and Again LFPS negotiations are carried out with main frame, until communication connection is normal；USB3.0 light after main frame shutdown is produced Fibre, which sends terminal circuit, can monitor the Link State with main frame USB3.0 controllers, and MCU control unit hair can basis USB3.0 optical fiber transmitting terminal and the corresponding control instruction of Link State output of main frame USB3.0 controllers, make USB3.0 light The communication link of fine transmitting terminal USB3.0 upstream Interfaces and main frame is off, USB3.0 optical fiber transmitting terminals USB3.0 HUB main control chips can enter holding state, and send LFPS to the USB3.0 main control chips of USB3.0 optical fiber receiving terminals Negotiation signal, allows and is both in holding state；After producing that main frame shut down, restarted, main frame shuts down again USB3.0 optical fiber, which sends terminal circuit 1, during start can monitor the Link State with main frame USB3.0 controllers 3, USB3.0 The hair of MCU control unit 16 of optical fiber transmitting terminal 1 can be according to corresponding to the Link State output of main frame USB3.0 controllers 3 Control instruction, the USB3.0 upstream Interfaces and main frame for making USB3.0 optical fiber transmitting terminal 1 is in correct connection status, when Monitor computer USB3.0 controllers 3 to initiate after LFPS negotiations, the MCU control unit 16 of USB3.0 optical fiber transmitting terminal 1 makes The link of the USB3.0 upstream Interfaces of USB3.0 optical fiber transmitting terminal 1 and main frame USB3.0 master controllers 3 is connected, and to meter Calculate machine host and send LFPS signals progress communication negotiation, until communication connection is normal；USB3.0 optical fiber transmitting terminal 1 is with calculating owner After machine communication is normal, the USB3.0 HUB master controls core 12 of USB3.0 optical fiber transmitting terminal 1 can be to USB3.0 optical fiber receiving terminal 1 USB3.0 main control chips 22 send LFPS negotiation signals, until communication connection is normal.

Be described more detail below it is a kind of USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal are carried out numerical diagnostic and The specific implementation of the method for USB3.0 terminal unit remotes control.

It is described a kind of whole to USB3.0 optical fiber transmitting terminal 1 and the progress numerical diagnostic of USB3.0 optical fiber receiving terminal 2 and USB3.0 The method of end equipment remote control, refers to defeated using the transmitting shut-off control SFP_Tx_Disable of SFP+ optical module optical transmitters The No Light Alarm signal SFP_LOS output pins for entering pin and photoreceiver combine that to form the two-way RS-232 transmission of a low rate logical Road, a numerical diagnostic passage is constituted by two-way RS-232 transmission channels, MCU control unit, management interface, and computer passes through number Word diagnoses passage to realize the control interface hair to the power supply circuit or USB3.0 terminal devices of USB3.0 terminal devices in itself Control instruction is sent, and numerical diagnostic management is carried out to the power supply state of SFP+ optical modules, terminal device.

Before USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal initial connection establishments, USB3.0 optical fiber is received The MCU control unit 26 at end 2 reads the transmitting luminous power of optical module, laser by the I2C buses of SFP+ optical modules 24 After the optical module indexs such as bias current, receiving sensitivity, the supply voltage of optical module, operating temperature, failure situation, pass through The RS-232 serial ports of the MCU control unit 26 of USB3.0 optical fiber receiving terminal 1 sends signal to the SFP_Tx_ of SFP+ optical modules 24 Disable input pins 243, modulation output RS232 optical signals, and in the SFP_ of the numerical diagnostic passage of USB3.0 optical fiber transmitting terminal 1 LOS output pins 145 export RS-232 serial datas, and RS-232 serial datas are transported to the MCU controls of USB3.0 optical fiber transmitting terminal 1 The rs 232 serial interface signal input LOS_232_RXD input pins 1638 of the numerical diagnostic passage of unit 16, send after being handled through MCU control unit 16 To main frame end；In addition, we can also be turned at main frame end by the USB2.0 to RS232 of management interface 18 Change circuit and convert instructions into RS-232 signals, RS-232 sends number by the RS232_TXD output pins 86 of management interface 18 Word diagnoses request instruction to the RS-232 rs 232 serial interface signals CMI_RS232_RXD of the MCU control unit 16 of USB3.0 optical fiber transmitting terminal 1 Input pin 1618, the MCU that MCU control unit 16 sends instructions to USB3.0 optical fiber receiving terminal 2 by numerical diagnostic passage is controlled The rs 232 serial interface signal input LOS_232_RXD input pins 2616 of unit 26, receive after instruction MCU control unit 26 by the light read Module index passes back to the rs 232 serial interface signal input of the MCU control unit 16 of USB3.0 optical fiber transmitting terminal 1 by numerical diagnostic passage LOS_232_RXD input pins 1638, it is defeated by RS-232 rs 232 serial interface signals CMI_RS232_TXD after being handled through MCU control unit 16 Go out pin 1617 and be sent to RS232_RXD input pins 85 by management interface 18, sent after being changed by USB2.0 to RS232 To main frame end；For the optical module index of USB3.0 optical fiber transmitting terminal 1, we can cross pipe at main frame end The MCU control unit that reason interface 18 sends numerical diagnostic request instruction to USB3.0 optical fiber transmitting terminal 1 is directly obtained；By this two The method of kind can realize the numerical diagnostic management to SFP+ optical modules；In addition when the USB3.0 terminals of USB3.0 optical fiber receiving terminal 2 Equipment power generation over current fault when, MCU control unit 22 this failure code can be stored, until over current fault release Deposited failure code can be removed, when we have found that equipment work is abnormal, management interface 18 can be crossed at main frame end The MCU control unit 22 for sending numerical diagnostic request instruction to USB3.0 optical fiber receiving terminal 2 obtains USB3.0 terminal equipment failures Code.

Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to assert The embodiment of the present invention is only limitted to this, for general technical staff of the technical field of the invention, is not taking off On the premise of from present inventive concept, some simple deduction or replace can also be made, the present invention should be all considered as belonging to by institute Claims of submission determine protection domain.

Claims

1. a kind of USB3.0 HUB based on optical fiber long-distance transmissions, it is characterised in that：Including a USB3.0 optical fiber transmitting terminal With a USB3.0 optical fiber receiving terminal, the fiber optic communication communicated between the two can automatically be assisted by self-defined rule of communication Business, four ultrahigh speed USB3.0 terminal peripheral hardwares can be connected simultaneously in the USB3.0 HUB of USB3.0 optical fiber receiving terminals；Using can With the SFP+ optical modules of hot plug, the length of optical fiber can be connected up according to actual needs；The present invention is in transmission USB3.0 letters Any additional data will not be added in original data stream in number transmitting procedure, USB3.0 signals are in optical fiber transmitting procedure It is transparent, all ultrahigh speed USB3.0 terminals peripheral hardwares for meeting USB3.0 standards can be connected normally；One kind is based on optical fiber The USB3.0 HUB of long-distance transmissions also have one and are made up of two-way RS-232 transmission channels, MCU control unit, management interface One numerical diagnostic passage, it is possible to achieve remote diagnostics management and remote control function.

2. a kind of USB3.0 HUB based on optical fiber long-distance transmissions as claimed in claim 1, it is characterised in that： USB3.0 optical fiber receiving terminals have a multiport USB3.0 HUB can while connect four ultrahigh speed USB3.0 terminal peripheral hardwares, USB3.0 HUB main control chips are μ PD720210.

3. a kind of USB3.0 HUB based on optical fiber long-distance transmissions as claimed in claim 1, it is characterised in that： USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals have a MCU control unit, can be for realizing to USB3.0 light Numerical diagnostic and USB3.0 the terminal unit remotes control of fine transmitting terminal and USB3.0 optical fiber receiving terminal, and USB3.0 optical fiber hair The fiber optic communication auto negotiation communicated between sending end and USB3.0 optical fiber receiving terminals.

4. a kind of USB3.0 HUB based on optical fiber long-distance transmissions as claimed in claim 1, it is characterised in that： USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals have a Rx_DET fictitious load, for simulating USB3.0 main controls The Rx_DET circuits of device downstream interface Rx inputs, realize and realize that USB3.0 electric signals are converted into light using common SFP+ optical modules Signal carries out fiber optic communication.

5. a kind of USB3.0 HUB based on optical fiber long-distance transmissions as claimed in claim 1, it is characterised in that： USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals have one can be with the SFP+ optical modules of hot plug, in use Optical module is flexibly changed, and the length of optical fiber can be connected up according to actual needs.

6. a kind of USB3.0 HUB based on optical fiber long-distance transmissions as claimed in claim 1, it is characterised in that： USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals have one by SFP+ optical modules transmitting turn off control input pin and No Light Alarm signal output pin combines the two-way RS-232 transmission channels of the low rate to be formed.

7. a kind of USB3.0 HUB based on optical fiber long-distance transmissions as claimed in claim 1, it is characterised in that：There is one One numerical diagnostic passage is constituted by two-way RS-232 transmission channels, MCU control unit, management interface, in USB3.0 optical fiber hair The management interface of sending end can carry out the USB2.0 signals of automatic switchover input as needed；The management of USB3.0 optical fiber receiving terminals Interface can connect the USB2.0 interfaces of outer computer.

8. a kind of USB3.0 HUB based on optical fiber long-distance transmissions as claimed in claim 1, it is characterised in that： USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals have a management interface, can be realized on main frame pair USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal carry out numerical diagnostic and the control of USB3.0 terminal unit remotes.

9. the auto negotiation method of fiber optic communication, its feature between a kind of USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals It is：No matter whenever, always the photoreceiver of the SFP+ optical modules of USB3.0 optical fiber receiving terminals is sent out prior to USB3.0 optical fiber The photoreceiver of the SFP+ optical modules of sending end receives optical signal；The photoreceiver of USB3.0 optical fiber receiving terminals is in optical fiber disconnecting Afterwards, MCU control unit hair output control instruction disconnects USB3.0 HUB main control chip upstream Interfaces link, USB3.0 HUB Main control chip enters holding state, and the optical transmitter of USB3.0 optical fiber receiving terminal SFP+ optical modules is forbidden shape in transmitting State, will not send optical signal and come out completely, even if optical fiber is reconnected normally, in the USB3.0 HUB of USB3.0 optical fiber receiving terminals Main control chip is not completed also can be in transmitting illegal state before link initialization；USB3.0 optical fiber transmitting terminals after optical fiber disconnects Photoreceiver can not receive optical signal, and MCU control unit hair output control instruction makes USB3.0 optical fiber transmitting terminals USB3.0 is up to connect The USB3.0 master controllers link connection of mouth and main frame is interrupted；When the photoreceiver of USB3.0 optical fiber receiving terminals is in optical fiber After reconnect, MCU control unit hair output control instruction makes USB3.0 HUB main control chips enter normal operating conditions, just Beginningization chip link state, USB3.0 HUB main control chip upstream Interface Tx output ends output LFPS signals, MCU control unit hair Output control instruction makes the optical transmitter of USB3.0 optical fiber receiving terminal SFP+ optical modules be in transmitting enabled state, normal to send LFPS optical signals are come out, and the photoreceiver of USB3.0 optical fiber transmitting terminals is received after LFPS optical signals, MCU control unit hair output control System instruction connects the link of USB3.0 optical fiber transmitting terminal USB3.0 upstream Interfaces and main frame USB3.0 master controllers, and Again LFPS negotiations are carried out with main frame, until communication connection is normal；USB3.0 light after main frame shutdown is produced Fibre, which sends terminal circuit, can monitor the Link State with main frame USB3.0 controllers, and MCU control unit hair can basis USB3.0 optical fiber transmitting terminal and the corresponding control instruction of Link State output of main frame USB3.0 controllers, make USB3.0 light The communication link of fine transmitting terminal USB3.0 upstream Interfaces and main frame is off, USB3.0 optical fiber transmitting terminals USB3.0 HUB main control chips can enter holding state, and send LFPS to the USB3.0 main control chips of USB3.0 optical fiber receiving terminals Negotiation signal, allows and is both in holding state；After producing that main frame shut down, restarted, main frame shuts down again USB3.0 optical fiber, which sends terminal circuit, during start can monitor the Link State with main frame USB3.0 controllers, USB3.0 light The MCU control unit hair of fine transmitting terminal can refer to according to control corresponding to the Link State output of main frame USB3.0 controllers Order, makes USB3.0 optical fiber transmitting terminal USB3.0 upstream Interfaces and main frame be in correct connection status, when monitoring meter Calculation machine USB3.0 controllers are initiated after LFPS negotiations, and USB3.0 optical fiber transmitting terminal MCU control units make USB3.0 optical fiber transmitting terminals The link of USB3.0 upstream Interfaces and main frame USB3.0 master controllers is connected, and sends LFPS signals to main frame Communication negotiation is carried out, until communication connection is normal；After USB3.0 optical fiber transmitting terminal communicates normally with main frame, USB3.0 light The USB3.0 HUB master controls core of fine transmitting terminal can send LFPS to the USB3.0 main control chips of USB3.0 optical fiber receiving terminals to be consulted to believe Number, until communication connection is normal.

10. it is a kind of remote to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal progress numerical diagnostic and USB3.0 terminal devices The method of process control, it is characterised in that：Main frame is by management interface, using in USB3.0 optical fiber transmitting terminal and USB3.0 Optical fiber receiving terminal combines the low speed formed by the transmitting shut-off control input pin and No Light Alarm signal output pin of SFP+ optical modules The numerical diagnostic passage that the two-way RS-232 transmission channels of rate, MCU control unit, management interface are combined into；Realize to distal end The control of the power supply circuit of USB3.0 terminal devices and the control interface transmission control instruction to USB3.0 terminal devices in itself, can Numerical diagnostic request instruction is sent to the MCU control unit of USB3.0 optical fiber receiving terminals to cross management interface at main frame end Obtain USB3.0 terminal equipment failure codes；And the power supply of the SFP+ optical modules, terminal device to USB3.0 optical fiber receiving terminals State carries out numerical diagnostic management；Numerical diagnostic passage is only initial in USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals Connect before setting up, USB3.0 terminal devices break down and can be just operated when being artificially controlled, and operator Member can be carried out corresponding management operation in computer terminal and USB3.0 equipment ends；This method is comprised the following steps that： Before USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal initial connection establishments, the MCU controls of USB3.0 optical fiber receiving terminals Unit is read the transmitting luminous power of optical module, the bias current of laser by the I2C buses of SFP+ optical modules, receives sensitive After the optical module index such as degree, the supply voltage of optical module, operating temperature, failure situation, pass through the MCU of USB3.0 optical fiber receiving terminals The RS-232 serial ports of control unit sends signal to the SFP_Tx_Disable input pins of SFP+ optical modules, modulation output RS232 optical signals, and export RS-232 serial numbers in the SFP_LOS output pins of USB3.0 optical fiber transmitting terminal numerical diagnostic passages According to the rs 232 serial interface signal that RS-232 serial datas are transported to the MCU control unit numerical diagnostic passage of USB3.0 optical fiber transmitting terminals is defeated Enter pin LOS_232_RXD, main frame end is sent to after being handled through MCU control unit；In addition, we can also calculate owner Generator terminal converts instructions into RS-232 signals by the USB2.0 to RS232 change-over circuits of management interface, and RS-232 passes through pipe The RS232_TXD output pins for managing interface send numerical diagnostic request instruction to the MCU control unit of USB3.0 optical fiber transmitting terminals RS-232 rs 232 serial interface signal input pin CMI_RS232_RXD, MCU control unit sent instructions to by numerical diagnostic passage The rs 232 serial interface signal input pin LOS_232_RXD of the MCU control unit of USB3.0 optical fiber receiving terminals, receives MCU controls after instruction single Member passes back to the optical module index read by numerical diagnostic passage the string of the MCU control unit of USB3.0 optical fiber transmitting terminals Mouth signal input pin LOS_232_RXD, passes through RS-232 rs 232 serial interface signal output pins CMI_RS232_ after being handled through MCU control unit TXD is sent to the input pin RS232_RXD by management interface, and computer is sent to after being changed by USB2.0 to RS232 Host side；For the optical module index of USB3.0 optical fiber transmitting terminals, we can cross management interface hair at main frame end The MCU control unit of numerical diagnostic request instruction to USB3.0 optical fiber transmitting terminals is sent directly to obtain；Can be with by both approaches Realize and the numerical diagnostic of SFP+ optical modules is managed；In addition when the USB3.0 power terminal equipments of USB3.0 optical fiber receiving terminals are produced During over current fault, MCU control unit can store this failure code, and deposited failure can be just removed until over current fault is released Code, when we have found that equipment work is abnormal, management interface can be crossed at main frame end and sends numerical diagnostic request The MCU control unit of USB3.0 optical fiber receiving terminals is instructed to obtain USB3.0 terminal equipment failure codes.