CN207718175U

CN207718175U - It is a kind of based on optical fiber transmission USB2.0 3.0 HUB

Info

Publication number: CN207718175U
Application number: CN201720991243.5U
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: Guangdong Qiding Optoelectronics Technology Co ltd
Priority date: 2017-08-09
Filing date: 2017-08-09
Publication date: 2018-08-10
Anticipated expiration: 2027-08-09

Abstract

It is a kind of based on optical fiber transmission USB2.0 3.0 HUB, it is characterised in that：Including a USB3.0 optical fiber transmitting terminal and a USB3.0 optical fiber receiving terminal, multimode fibre may be used, single mode optical fiber can also be used, twin-core fiber may be used, single-core fiber can also be used；The USB3.0 HUB of USB3.0 optical fiber receiving terminals can connect simultaneously four USB3.0 2.0 1.1 1.0 terminal devices；The ultrahigh speed communication linkage of USB3.0 is realized using the hypervelocity data difference interface of USB3.0 interfaces, transmission range can reach 300 meters to 400 meters, the data that the utility model is transmitted are primary USB3.0 data formats, be in transmission process in USB3.0 signals it is transparent, it is all meet USB3.0 2.0 1.1 the terminal peripheral hardwares of 1.0 standards can normally connect.

Description

It is a kind of based on optical fiber transmission USB2.0 3.0 HUB

Technical field

The utility model is related to the communications fields USB3.0, more particularly to a variety of USB3.0 2.0 1.1 1.0 terminal devices with Between computer the technical field of telecommunication, in particular to it is a kind of based on optical fiber transmission USB2.0 3.0 HUB.

Background technology

Transmission speed is substantially improved in USB3.0, it is based on full-duplex data transport 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), compare USB2.0 There are nearly 10 times of promotion in epoch, and transmission rate promotion has been arrived 10Gbps by newest USB3.1 Gen2 standards now, Therefore the transmission range of data encounters unprecedented challenge.Since transmission rate is as defined in previous USB2.0 standards 5Gbps has been arrived in 480Mbps promotions, therefore does not exceed 3 meters generally using traditional cable, some are put using producer using relaying After large chip, transmission range also can only achieve farthest 15 meters of transmission range, but due to using 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）Upper use；And now with the rise of industry 4.0, perhaps The transmission range of more USB3.0 industrial cameras can be more than this distance, or even reach hundreds of meters of distance, other enterprise Due to safety concerns with unit, it generally requires to manage concentratedly main frame, user can only be stored in distal end using USB3.0 Equipment and USB3.0 printers, to realize the security isolation of main frame and user, and it is past between computer and terminal It is past also to have reached rice up to a hundred, and data cannot have electromagnetic leakage in transmission process and cause data safety that cannot ensure. And we can solve the problems, such as electromagnetic interference using optical fiber transmission USB3.0 signals, and asking for transmission range can be solved Topic, although having some that the device that USB3.0 signals transmit at a distance may be implemented now in addition, they are typically all by terminal The USB3.0 data of equipment, which by USB3.0 physical chips are parsed into other data formats and recompile again, is converted into optical fiber It transmits, the optical signal received is converted into electric signal by other end, is converted by USB3.0 physical chips and line number Data acquisition is carried out according to capture card is sent to, they cannot achieve other USB3.0 marks both for some specific equipment applications The access of quasi- terminal device, such as a kind of device being used for realizing that USB3.0 industrial cameras transmit at a distance are can not to be used for accessing Other USB3.0 terminal devices such as USB flash disk, USB3.0 mobile hard disks or printer, and it is existing not yet it is a kind of can directly by USB2.0 and USB3.0 equipment uses ultra high speed signal differential data line optical mode by a list USB3.0 main control chip simultaneously Block is converted into completing the scheme transmitted at a distance with optical fiber after optical signal, typically wants additional USB2.0 a to USB3.0's Conversion chip, then transmission is integrated with a USB3.0 HUB, compatibility is to be improved, and this chip is currently in monopolization, Other producers can not be purchased by channel and be arrived, and directly limit USB3.0 in remote transmission to the simultaneous of USB2.0/1.1/1.0 Hold application.

Invention content

The technical problem to be solved by the present invention is to provide one kind based on optical fiber transmission support a variety of usb terminal equipment with The USB2.0 transmitted at a distance between computer 3.0 HUB, the ultrahigh speed differential signal transmission of USB3.0 can be passed through USB3.0 2.0 1.1 1.0 data, i.e., backward compatible USB2.0/1.1/1.0 equipment, and digital diagnostics circuitry can be passed through Realize that USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals carry out numerical diagnostic and the control of USB3.0 terminal unit remotes.

Technical solution used by the utility model：A kind of USB3.0 transmitting compatible USB2.0 at a distance based on optical fiber HUB, including a USB3.0 optical fiber transmitting terminal and a USB3.0 optical fiber receiving terminal, the fiber optic communication communicated between the two can be with Auto negotiation is carried out by self-defined rule of communication, USB3.0 ultra high speed signals are full duplex signalings, receive and hair is respectively a pair of only Vertical differential data line：SSTX+/- and SSRX+/-, therefore transmitted with optical fiber after optical signal can be converted into optical module, A USB2.0 accelerating engine is contained inside the USB3.0 HUB main control chips of USB3.0 optical fiber receiving terminals, it can all downlinks The USB2.0 signals of port are converted into USB3.0 signals, finally pass through USB3.0 HUB with the USB3.0 signals of all downstream interfaces The USB3.0 main control chips of ultrahigh speed HUB routing engines and main frame in main control chip carry out data transmission, therefore can With with optical fiber by USB3.0 ultra high speed signals come simultaneous transmission USB2.0 and USB3.0 data, the USB3.0 HUB main control chips Four ports can connect USB2.0 or USB3.0 terminal peripheral hardwares, and USB2.0 and USB3.0 equipment can be used in mixed way, I.e. backward compatible USB2.0 1.1 1.0 equipment；Multimode fibre may be used, single mode optical fiber can also be used, twin-core may be used Optical fiber can also use single-core fiber, and all there are one can be with hot plug for USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal SFP+ optical modules, optical module is flexibly replaced in use, and the length of optical fiber can carry out cloth according to actual needs Line.Transmission range can reach 300 meters to 400 meters, and the data of the used technical solution transmission of the utility model are primary USB3.0 data formats, will not be by USB3.0 in order to ensure compatibility and general applicability during USB3.0 fiber optic communications The primary USB3.0 data conversions that master controller, USB3.0 HUB main control chips and USB3.0 terminal devices are sent are at other formats New encoding and decoding of laying equal stress on are transmitted again, and the USB3.0 electric signals received are only carried out to the conversion of electrical-optical-electrical, and optical fiber transmission is set It is standby that any additional data will not be added in a stream, therefore USB3.0 signals use fibre optic transmission equipment in transmission process Be it is transparent, it is all meet USB3.0 2.0 1.1 the terminal peripheral hardwares of 1.0 standards can normally connect.

It will be described in detail each component part of USB3.0 optical fiber transmitting terminals below.

By said program, 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, are on the one hand used for receiving USB3.0 data, separately On the one hand it is used for solving repeating plug, the plug of SFP+ optical modules, computer switch using optical fiber interface in optical fiber transmission process Machine and the problem of terminal device can not connect main frame under these states such as restart, USB3.0 letters additionally may be implemented Number relaying amplification effect, a port connection management interface circuit of USB3.0 HUB main control chips, realize USB2.0 conversion At RS-232 interface, RS-232 interface is connected to a RS-232 serial ports of MCU control unit, for realizing in main frame Hold the numerical diagnostic management to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals.

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

The Rx_DET fictitious loads, for simulating USB3.0 terminal devices；According to USB3.0 agreements, USB3.0 interfaces Rx input terminals must include Rx Detect circuits, and 3.0 physical layers of USB are when in U1, U2, U3 state, in order to save electric power And using LFPS (Low Frequency Period Singal) signals 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 are 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 ends Tx 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 input terminals Road, therefore when SFP+ optical modules are connect with USB3.0 HUB chips, USB3.0 HUB chips can have been at Rx Detect states In, it can not be communicated with the USB3.0 HUB main control chips of USB3.0 fibre optic receivers, cause link failure can not be into line number According to transmission, and the Rx_DET fictitious loads in the utility model are the key technology means for solving the problems, such as this.

The SFP+ optical modules are connected to some downstream interface of USB3.0 HUB main control chips, and being on the one hand used for will The electric signal that the Tx output ends of USB3.0 HUB chip downstream interfaces are sent is converted into optical signal, and being on the other hand used for will The optical signal that USB3.0 optical fiber receiving terminals send over is converted into electric signal and is sent to USB3.0 optical fiber transmitting terminal USB3.0 HUB cores The downstream interface Rx input terminals of piece；In addition, transmitting shutdown control Tx_ of the utility model 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 channel forms a numerical diagnostic channel by two-way RS-232 transmission channels, MCU control unit, management interface, and computer is logical It crosses numerical diagnostic channel and control instruction is sent to the power supply circuit or USB3.0 terminal devices of USB3.0 terminal devices to realize, And numerical diagnostic management is carried out to the SFP+ optical modules of USB3.0 optical fiber receiving terminals.

The MCU control unit, the USB3.0 master controllers for controlling USB3.0 HUB and main frame are shaken hands Connection and USB3.0 main control chips reset, and realize that the power supply of USB3.0 interfaces and externally fed are cut automatically for controlling power supply unit It changes, for realizing numerical diagnostic and its control of SFP+ optical modules, for realizing the transmission of USB3.0 terminal device control instructions, The numerical diagnostic management to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals is realized in conjunction with management interface.

The management interface circuit is connected to a port downlink USB2.0 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 Numerical diagnostic management of the main frame end to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals.

Said supply unit, may be implemented the power supply of USB3.0 interfaces and externally fed automatically switches, and be USB3.0 HUB cores Piece, MCU control unit, SFP+ optical modules, management interface, LED indicating circuit, EEPROM provide power supply.

The LED indicating circuit, the information such as the communications status being used to indicate, SFP+ module status, fault condition.

It will be described in detail each component part of USB3.0 optical fiber receiving terminals below.

By said program, the USB3.0 optical fiber receiving terminal, including four USB3.0 downstream interfaces, USB3.0 HUB masters Control chip, eeprom chip, Rx_DET fictitious loads, SFP+ optical modules, MCU control unit, management interface circuit, LED indication Circuit, power supply unit.

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

Preferably, the USB3.0 HUB main control chips are the FL6000 of Fresco Logic companies production, and FL6000 is adopted With the exclusive F-One of Fresco Logic companies^TMTechnology can allow USB2.0 the and USB3.0 data of downlink port to pass through uplink The USB3.0 ultrahigh speed differential data lines of port（SSTX+/- and SSRX+/-）It is transmitted, without outside plus one The conversion chip of USB2.0 to USB3.0, integrated circuit become simpler, and compatibility is more preferable, are supporting the same of USB3.0 equipment When can be compatible with USB2.0/1.1/1.0 equipment directly down, FL6000 chip interiors contain a USB2.0 accelerating engine （USB2.0 to USB3.0 Translators）, can the USB2.0 signals of all downlink ports be converted into USB3.0 signals, Finally pass through ultrahigh speed HUB controllers in USB3.0 HUB main control chips and routing with the USB3.0 signals of all downstream interfaces Engine（SuperSpeed HUB Controller and Routing）With the USB3.0 main control chips of main frame into line number According to transmission, thus can with optical fiber by USB3.0 ultrahigh speeds differential data line come simultaneous transmission USB2.0 and USB3.0 data； The up going port of USB3.0 HUB main control chips is connected to SFP+ optical modules, the USB3.0 HUB master control cores of USB3.0 optical fiber receiving terminals Four ports of piece can support USB2.0 and USB3.0 terminal peripheral hardwares, as USB2.0 writing pencils, USB touch screens, USB mouse, Outside the standards USB such as USB keyboard, USB3.0 industrial printers, USB3.0 cameras, USB3.0 mobile hard disks, USB3.0 movement USB flash disks If USB2.0 and USB3.0 equipment can be used in mixed way.

The eeprom chip, the configuration data for storing USB3.0 HUB main control chips.

The Rx_DET fictitious loads, for simulating the Rx_DET electricity of USB3.0 master controller downstream interface Rx input terminals Road；According to USB3.0 agreements, the Rx input terminals of USB3.0 interfaces must include Rx Detect circuits, and 3.0 physical layers of USB are being located 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 ends Tx of USB3.0 HUB main control chips can ceaselessly send Rx Detect square-wave signals, The square-wave signal is not LFPS signals.If never connect with USB3.0 master controllers, according to USB3.0 agreements, then It has been in Rx Detect states；When USB3.0 HUB main control chips uplink ports are connect with USB3.0 master controllers, The ends Tx 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 input terminals, therefore when SFP+ optical modules are connect with USB3.0 HUB chips, USB3.0 HUB main control chips can have been in Rx Detect states, can not be with the USB3.0 HUB master control cores of USB3.0 optical fiber transmitters Piece downstream interface is communicated, and causes link failure that can not carry out data transmission, and the Rx_DET simulations in the utility model are negative Load is the key technology means for solving the problems, such as this.

The SFP+ optical modules, on the one hand, the optical signal that USB3.0 optical fiber transmitting terminals send over is converted into electric signal It is sent to the upstream Interface Rx input terminals of USB3.0 optical fiber receiving terminal USB3.0 HUB main control chips；Another party, by USB3.0 optical fiber The electric signal that receiving terminal upstream Interface Tx output ends send over is converted into optical signal and is sent to USB3.0 optical fiber transmitting terminal SFP+ light The Rx input terminals of module；In addition, transmitting shutdown control Tx_Disable of the utility model using SFP+ optical module optical transmitters The No Light Alarm signal LOS output pins of input pin and photoreceiver combine to form the two-way RS-232 transmission channels of a low rate, One numerical diagnostic channel is formed by two-way RS-232 transmission channels, MCU control unit, management interface, computer passes through number Diagnosis channel sends control instruction and right to realize to the power supply circuit or USB3.0 terminal devices of USB3.0 terminal devices The SFP+ optical modules of USB3.0 optical fiber receiving terminals carry out numerical diagnostic management.

The MCU control unit, the USB3.0 master controllers for controlling USB3.0 HUB and main frame are shaken hands Connection and USB3.0 main control chips reset, realize that the power supply control of USB3.0 terminal devices and failure are examined for controlling power supply unit The disconnected, transmission for realizing USB3.0 terminal device control instructions, the numerical diagnostic for realizing SFP+ optical modules and its control, The numerical diagnostic management to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals is realized in conjunction with management interface.

A kind of auto negotiation side of the fiber optic communication between USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals Method refers to solving transmitting USB3.0 data mistakes using optical fiber by mcu programming technology and the relevant rule of communication of 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 establishes 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 are will appear in optical fiber connection procedure, the first is USB3.0 optical fiber transmitting terminals SFP 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 establishes 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 establishes 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 establishes connection；The third is USB3.0 optical fiber transmitting terminal SFP+ optical modes The light-receiving of block is first established 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 established with the photoreceiver of USB3.0 optical fiber receiving terminal SFP+ optical modules and is connected.

If optical fiber disconnecting caused by because of optical fibre damage or artificially extracting optical fiber, needs to re-start optical fiber When connection, main frame is re-established with the USB3.0 HUB main control chips of distal end USB3.0 optical fiber receiving terminals needs and is connect, Both sides can re-initiate low speed LFPS signals and carry out connection of shaking hands at this time, so that it is determined that connection status, but at this time if 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, the not instead of LFPS data-signals that the USB3.0 HUB main control chip downstream interfaces of USB3.0 optical fiber transmitting terminals receive surpass High speed packet may result in negotiation failure, computer caused to connect the USB3.0 master controls of this USB3.0 optical fiber transmitting terminal in this way Device port processed is crashed, and is received to USB3.0 HUB main control chips, the USB3.0 optical fiber of None- identified USB3.0 optical fiber transmitting terminals 3.0 terminal device of USB3.0 HUB main control chips and circumscribed USB at end.

USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals often encounter main frame pass in communication process Machine, restart, main frame has shut down and has turned back on after some time, can thus face severe problem：As calculating owner After machine reenters operating system, it often will appear USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal and work as calculating owner Machine connection failure, main frame are possible to that USB3.0 equipment conjunction rule can be prompted still can not to link or not link at all The reason of acting, leading to 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 does not simultaneously enter LFPS negotiation states, and is constantly in normal ultrahigh speed link, works as main frame After reentering system, the USB3.0 master controllers of main frame should be that a low rate is logical with USB3.0 optical fiber transmitting terminals Letter pattern, but what the USB3.0 master controllers of actual computer host received first is that USB3.0 optical fiber transmitting terminals send over Ultrahigh speed data packet fails so as to cause the negotiation of the two, and 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 rule：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 For photoreceiver after optical fiber disconnecting, MCU control unit hair output control instruction makes USB3.0 HUB main control chip uplinks connect Mouth link disconnects, and USB3.0 HUB main control chips enter standby mode, and make the light of USB3.0 optical fiber receiving terminal SFP+ optical modules Transmitter is in transmitting illegal state, will not send optical signal completely and come out, even if optical fiber reconnects normally, in USB3.0 light The USB3.0 HUB main control chips of fine receiving terminal can also be in transmitting illegal state before not completing 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 controller link connections of fine transmitting terminal USB3.0 upstream Interfaces and main frame are interrupted；When USB3.0 optical fiber connects For the photoreceiver of receiving end after optical fiber reconnect, 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 make the optical transmitter of USB3.0 optical fiber receiving terminal SFP+ optical modules be in Emit 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 answer control instruction according to the link state the output phase with main frame USB3.0 controllers, make 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 standby mode, 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 standby；When generating, main frame shut down, restarts, 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 be according to the link state the output phase with main frame USB3.0 controllers Control instruction is answered, USB3.0 optical fiber transmitting terminal USB3.0 upstream Interfaces is made to be in correct connection status with main frame, when After monitoring the initiation LFPS negotiations of computer USB3.0 controllers, 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 out 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 as defined in USB3.0 standards must be all encoded into Ultrahigh speed data stream is transmitted, since USB3.0 standards do not reserve the I/O channel of some low rates, in USB3.0 light During fiber communication, in order to ensure that 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 be added any attached in a stream The data added, USB3.0 signals in transmission process 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 the hardware circuit of USB3.0, and the utility model It is realized based on a special numerical diagnostic channel and number is carried out to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals Diagnosis and the control of USB3.0 terminal unit remotes.

A kind of special numerical diagnostic channel refers to the transmitting shutdown control using SFP+ optical module optical transmitters The No Light Alarm signal SFP_LOS output pins of SFP_Tx_Disable input pins and photoreceiver combine to form a low rate pair To RS-232 transmission channels, a numerical diagnostic is formed by two-way RS-232 transmission channels, MCU control unit, management interface and is led to Road, computer realize power supply circuit or USB3.0 terminal device sheets to USB3.0 terminal devices by numerical diagnostic channel The control interface of body sends control instruction, and carries out numerical diagnostic management 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 shutdown 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 It does not shine, when the pin is low level, laser shines, the transmitting shutdown control signal electricity when SFP+ optical modules work normally 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, which is used only to sentence The presence or absence of disconnected input optical signal, in normal light communication process, which is to maintain always low level；The two control script bodies There is no the function of bidirectional data communication, but we can turn off control SFP_Tx_Disable input pins in transmitting and input one The digital square-wave of low rate, such as the rs 232 serial interface signal of 9600bps, then SFP+ optical modules optical transmitter can be according to the low rate The variation of digital square-wave low and high level generate the unglazed state change sent out and there is light to send out, to modulate The optical signal of 9600bps low rates, and in the No Light Alarm signal SFP_LOS output pin meetings of corresponding SFP+ optical module photoreceivers According to unglazed input and the state change for thering is light to input, the rs 232 serial interface signal of original 9600bps is restored；Therefore, SFP+ optical modes The transmitting shutdown control SFP_Tx_Disable input pins of block optical transmitter and the No Light Alarm signal SFP_LOS of photoreceiver are defeated Going out foot 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 form a numerical diagnostic channel, and numerical diagnostic channel is not in the case of USB3.0 link normal communications Work, numerical diagnostic channel 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 just work when artificially being controlled, and operating personnel are in computer terminal Corresponding management operation is can be carried out with USB3.0 equipment ends.

It crashes when we will appear equipment once in a while during using USB3.0 terminal devices or other can not pass through meter When calculating owner's generator terminal recovery USB3.0 terminal devices to normal operating conditions, we can be connect by numerical diagnostic channel to management Mouth sends specific instruction to USB3.0 terminal devices control interface itself or connect the ends USB3.0 with USB3.0 terminal devices The power supply circuit of mouth carries out cold start-up to equipment, and to restore normal, we can also be connect by numerical diagnostic channel to management Mouth sends specific instruction to the fault condition 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 receives 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 modules indexs such as stream, receiving sensitivity, the supply voltage of optical module, operating temperature, fault condition, 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 in USB3.0 optical fiber transmitting terminal numerical diagnostics channel Serial data, RS-232 serial datas are transported to the serial ports in the MCU control unit numerical diagnostic channel of USB3.0 optical fiber transmitting terminals Signal input pin LOS_232_RXD is sent to main frame end after MCU control unit is handled；In addition, we can also count It calculates owner's generator terminal and RS-232 signals, RS-232 is converted instructions by the USB2.0 to RS232 conversion 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 are sent by numerical diagnostic channel and are 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, MCU is controlled after receiving instruction The optical module index read is passed back to the MCU control unit of USB3.0 optical fiber transmitting terminals by unit by numerical diagnostic channel Rs 232 serial interface signal input pin LOS_232_RXD passes through RS-232 rs 232 serial interface signal output pins CMI_ after MCU control unit is handled RS232_TXD is sent to the input pin RS232_RXD by management interface, by being sent to after USB2.0 to RS232 conversions 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 directly acquires；Pass through both sides The numerical diagnostic management to SFP+ optical modules may be implemented in method；In addition when the USB3.0 terminal devices of USB3.0 optical fiber receiving terminals supply When electricity generates over current fault, MCU control unit can store this failure code, until over current fault releasing can just remove institute Failure code is deposited, when we have found that equipment work is abnormal, management interface transmission number can be crossed at main frame end and examined The MCU control unit of disconnected request instruction to USB3.0 optical fiber receiving terminals obtains USB3.0 terminal equipment failure codes.

The utility model has the beneficial effects that：It provides a kind of based on a variety of USB3.0 terminal devices of optical fiber transmission support The USB3.0 HUB transmitted at a distance between computer, transmission range can reach 300 meters to 400 meters, multimode may be used Optical fiber can also use single mode optical fiber, and twin-core fiber may be used, can also use single-core fiber；The utility model can connect USB2.0 or USB3.0 terminal peripheral hardwares are connect, and USB2.0 and USB3.0 equipment can be used in mixed way, i.e., backward compatible USB2.0/ 1.1/1.0 equipment, using can be carried out more with the SFP+ optical modules of hot plug, SFP+ optical modules in the case where not powering off It changes, operation and maintenance is very convenient for, and the length of optical fiber can be connected up according to actual needs；Not only it may be implemented A variety of USB3.0 terminal devices are connect with host, and the condition monitoring of SFP+ optical modules can be realized by digital diagnostics circuitry And remote operation is carried out to USB3.0 terminal devices, the data that the utility model is transmitted are primary USB3.0 data formats, The primary USB3.0 data that USB3.0 master controllers, USB3.0 HUB main control chips and USB3.0 terminal devices will not be sent turn It changes the new encoding and decoding of laying equal stress on of other formats into be transmitted again, therefore its transmission is transparent, all USB3.0 standards that meet Terminal peripheral hardware can be connected normally, the utility model while extending USB3.0 transmission ranges, also have transmission channel without The advantages of electromagnetic leakage, electromagnetism interference.

Description of the drawings

Fig. 1 is the system application principle block diagram of the utility model.

Fig. 2 is the USB3.0 optical fiber transmitting terminal functional block diagrams of the utility model.

Fig. 3 is the USB3.0 optical fiber transmitting terminal USB3.0 HUB main control chip functional block diagrams of the utility model.

Fig. 4 is the USB3.0 optical fiber transmitting terminal Rx_DET fictitious loads of the utility model.

Fig. 5 is the USB3.0 optical fiber transmitting terminal SFP+ optical modules of the utility model.

Fig. 6 is the USB3.0 optical fiber transmitting terminal MCU control units of the utility model.

Fig. 7 is the USB3.0 optical fiber transmitting terminal power supply units of the utility model.

Fig. 8 is the USB3.0 optical fiber transmitting terminal management interfaces of the utility model.

Fig. 9 is the USB3.0 optical fiber receiving terminal functional block diagrams of the utility model.

Figure 10 is the USB3.0 optical fiber receiving terminal USB3.0 HUB main control chip functional block diagrams of the utility model.

Figure 11 is the USB3.0 optical fiber receiving terminal Rx_DET fictitious loads of the utility model.

Figure 12 is the USB3.0 optical fiber receiving terminal SFP+ optical modules of the utility model.

Figure 13 is the USB3.0 optical fiber receiving terminal MCU control units of the utility model.

Figure 14 is the USB3.0 optical fiber receiving terminal power supply units of the utility model.

Figure 15 is the USB3.0 optical fiber receiving terminal management interfaces of the utility model.

Specific implementation mode

To more fully understand the utility model, the utility model work is further retouched with reference to the accompanying drawings and examples It states.It is understood that specific embodiment described herein is used only for explaining the utility model, rather than to the utility model Restriction.It also should be noted that illustrate only for ease of description, in attached drawing with the relevant part of the utility model and Not all circuit structure.

The utility model is a kind of based on remote between a variety of USB3.0 terminal devices of optical fiber transmission support and computer The USB3.0 HUB of transmission；As shown in Fig. 1,1 one end of USB3.0 optical fiber transmitting terminal passes through USB3.0 cable connections to calculating owner The USB3.0 HOST 3 of machine, the other end are connected to USB3.0 optical fiber receiving terminal 2 by optical fiber；2 one end of USB3.0 optical fiber receiving terminal It is connected to USB3.0 optical fiber transmitting terminal 1 by optical fiber, the downstream interface of USB3.0 optical fiber receiving terminal 2 can be with by USB3.0 cables It is connected to USB3.0 mobile hard disks, USB3.0 cameras, USB3.0 printers simultaneously, it is whole that other standard USB3.0 can also be connected End；The utility model utilizes the hypervelocity data difference interface of USB3.0 interfaces：SSTX+/- and SSRX+/- realize USB3.0's Ultrahigh speed communication linkage, transmission range can reach 300 meters to 400 meters, and the data that the utility model is transmitted are primary USB3.0 data formats will not send USB3.0 master controllers, USB3.0 HUB main control chips and USB3.0 terminal devices Primary USB3.0 data conversions are transmitted again at the new encoding and decoding of laying equal stress on of other formats, therefore its transmission is transparent, is owned Meet USB3.0 2.0 1.1 the terminal peripheral hardwares of 1.0 standards can normally connect.

With reference to Fig. 2-8, USB3.0 optical fiber transmitting terminal 1 is described in detail.

As shown in Fig. 2, USB3.0 optical fiber transmitting terminal 1, including a USB3.0 upstream Interface 11, 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：1212 external FLASH chip of FLASH data/address bus 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 terminal 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 terminal 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 uplinks 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 are used for controlling the communication negotiation of USB3.0 optical fiber transmitting terminal 1 and USB3.0 optical fiber receiving terminal 2；It is multiple On the one hand position signal RST_USB inputs 1216 connect external reset circuit, be on the other hand connected to MCU control unit 16 USB3.0 HUB reset signal RST_USB output pins 1633 have in other circuits explanation and are connected with explanation to our department's sub-signal , it is not described in detail herein.

The connection of SFP+ optical modules 14 pin 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 instruction 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 Circuit supply input SFP_VCCT pins 149 are connected to the optical module optical transmission circuit power supply SFP_VCCT outputs of power supply unit 15 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 power supply SFP_VCCR output pins 1523, have in other circuits explanation and are connected with to our department's sub-signal Bright, it is not described in detail herein.

The connection of power supply unit 15 and other circuits：Externally fed EXT_5V pins 1515 connect externally fed source; USB Bus-powered USB_5V pins 1516 are connected to the power supply output pin of usb bus power supply chip, which is SP2525A-2E, chip output voltage when the enabled pin low level of the chip;Usb bus is for power detection signal USB_PWR_ DET output pins 1511 are connected to the usb bus of MCU control unit 16 for 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 enabled 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 there is no external power supply power supply, USB_ PWR_DET keeps output low level, the PWR_SW of MCU control unit 16 to export a low level enable signal to power supply unit 15 PWR_SW input, at this point, usb bus power supply chip export supply voltage；When there is external power supply power supply, USB_PWR_DET Output high level, the PWR_SW of MCU control unit 16 is kept to export PWR_ of the high level enable signal to power supply unit 15 SW is inputted, at this point, usb bus power supply chip does not work, is powered to entire circuit by external power supply；MCU control unit 16 is powered VCC_MU output pins 1524 are connected to the power supply VCC_MCU input pins 1631 of MCU control unit 16, power supply unit inside one The anode of a diode is connected to EXT_5V, and the cathode of the diode is connected to VCC_MU, the anode connection of another diode Cathode to USB_5V, the diode is connected to VCC_MU, and MCU control unit 16 takes electricity from USB interface and external power supply simultaneously, The power supply of MCU control unit 16 preferentially supplies, i.e., is not influenced 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 enable signal SFP_PWR_EN input pins 1514 are connected to the SFP_PWR_EN output pins of MCU control unit 16 1635, have in other circuits illustrate and explanation is connected with to our department's sub-signal, is not described in detail herein.

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

There are one online programming and upgrade interface, ISP_RS232_TXD output pins 2643 to be connected to for MCU control unit 16 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.

With reference to Fig. 9-15, USB3.0 optical fiber receiving terminal 2 is described in detail.

As shown in figure 9, USB3.0 optical fiber receiving terminal 2, including a 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, eeprom chip 29.

The connection of the pin and other circuits of USB3.0 HUB main control chips 22：EEPROM data/address bus 2212 is external Eeprom chip 29, concrete model M24C64；Hypervelocity sends signal U3H_TX+/- differential pair 2213, is connected to RX_DET moulds The high-speed differential signal input terminal 231 of quasi- load 23；The high-speed differential signal output end 232 of RX_DET fictitious loads 23 connects To TX+/- input terminal 246 of SFP+ optical modules 24；Hypervelocity receives signal U3H_RX+/- differential pair 2214 and is connected to SFP+ optical modes The RX+ of block 24/- output end 247；USB3.0 upstream Interface supply voltage VBUS monitoring signal VBUS_DET input pins 2215 connect To the VBUS control signal VBUS_DET output pins 2634 of MCU control unit, this signal is used for controlling USB3.0 optical fiber transmitting terminal 1 With the communication negotiation of USB3.0 optical fiber receiving terminal 2；On the one hand reset signal RST_USB inputs 2216 connect external reset circuit, On the other hand the USB3.0 HUB reset signal RST_USB output pins 2633 of MCU control unit 26 are connected to；Downstream interface port 1 power supply enables PPON1 signals output pin 2231 and is connected to 1 power supply of downlink port of power supply unit to enable DP_PWEN1 signals defeated Enter foot 2527；2 power supply of downstream interface port enables 2 electricity of downlink port that PPON2 signals output pin 2233 is connected to power supply unit Source enables DP_PWEN1 signal input pins 2528；3 power supply of downstream interface port enables PPON3 signals output pin 2235 and is connected to 3 power supply of downlink port of power supply unit enables DP_PWEN3 signal input pins 2529；4 power supply of downstream interface port enables PPON4 4 power supply of downlink port that signal output pin 2237 is connected to power supply unit enables DP_PWEN4 signal input pins 2530；Downlink connects Mouth port over-current signal OCI input pins 2235 are connected to the 1 over-current signal DP_OVCI1 output pins of downlink port of power supply unit 2531,2 over-current signal DP_OVCI2 output pins 2532 of downlink port, 3 over-current signal DP_OVCI3 output pins 2533 of downlink port, 4 over-current signal DP_OVCI1 output pins 2534 of downlink port；Differential pair USB3-TX1+/- signal exports 2222 and USB3-RX1 +/- signal input 2223 and USB2-1+/- differential pair 2241 is connected respectively to the USB3.0 interfaces of downstream interface 1；Differential pair USB3-TX2+/- signal exports 2224 and USB3-RX2+/- signal input 2225 and USB2-2+/- differential pair 2242 and is separately connected To the USB3.0 interfaces of downstream interface 2；Differential pair USB3-TX3+/- signal exports 2226 and USB3-RX3+/- signal input 2227 and USB2-3+/- differential pair 2243 is connected respectively to the USB3.0 interfaces of downstream interface 3；Differential pair USB3-TX4+/- letter Number output 2228 and USB3-RX4+/- signal input 2229 and USB2-4+/- differential pair 2244 is connected respectively to downstream interface 4 USB3.0 interfaces, have in other circuits illustrate and explanation be connected with to our department's sub-signal, be not described in detail herein.

The connection of SFP+ optical modules 24 pin 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 instruction 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 Circuit supply input SFP_VCCT pins 249 are connected to the optical module optical transmission circuit power supply SFP_VCCT outputs of power supply unit 25 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 power supply SFP_VCCR output pins 2523, have in other circuits explanation and are connected with to our department's sub-signal Bright, it is not described in detail herein.

The connection of power supply unit 25 and other circuits：Externally fed EXT_5V pins 2515 connect externally fed source;By External power supply is powered to entire 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 enable signal SFP_PWR_EN input pins of SFP+ optical modules 24 2521 are connected to the SFP_PWR_EN output pins 2625 of MCU control unit 26；The overcurrent of the downlink port 1 of power supply unit 25 is believed Number DP_OVC1_MCU output pins 2544 are connected to the DP_OVC1_MU input pins 2630 of MCU control unit 26；Power supply unit The over-current signal DP_OVC2_MCU output pins 2545 of 25 downlink port 2 are connected to the DP_OVC2_MU of MCU control unit 26 Input pin 2631；The over-current signal DP_OVC3_MCU output pins 2546 of the downlink port 3 of power supply unit 25 are connected to MCU The DP_OVC3_MU input pins 2632 of control unit 26；The over-current signal DP_OVC4_MCU of the downlink port 4 of power supply unit 25 Output pin 2547 is connected to the DP_OVC4_MU input pins 2633 of MCU control unit 26；The downlink port 1 of power supply unit 25 Long-range cold start controlling signals DP _ PWEN1_MCU output pins 2540 be connected to the DP_ of input pin MCU control unit 26 PWEN1_MU input pins 2634；Long-range cold start controlling signals DP _ PWEN2_MCU of the downlink port 2 of power supply unit 25 is defeated Go out the DP_ PWEN2_MU input pins 2635 that pin 2541 is connected to input pin MCU control unit 26；Power supply unit 25 It is single that long-range cold start controlling signals DP _ PWEN3_MCU output pins 2542 of downlink port 3 are connected to input pin MCU controls The DP_ PWEN3_MU input pins 2636 of member 26；The long-range cold start controlling signals DP of the downlink port 4 of power supply unit 25 _ PWEN1_MCU output pins 2543 are connected to the DP_ PWEN4_MU input pins 2637 of input pin MCU control unit 26, Other circuits have in illustrating is connected with explanation to our department's sub-signal, is 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 ports USB2.0 of outer computer host, by USB2.0 to RS-232 conversion chips, to be counted in outside It calculates and increases a RS-232 management serial ports on machine host；The serial ports transmission data RS232_TXD pins 284 of management interface 28 connect 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 to this in other circuits explanation Part signal connection is described, and is not described in detail herein.

There are one online programming and upgrade interface, ISP_RS232_TXD output pins 2643 to be connected to for MCU control unit 26 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.

A kind of auto negotiation rule of fiber optic communication between the USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals, Refer to solving transmitting USB3.0 data procedures using optical fiber by mcu programming technology and the relevant rule of communication of formulation It is middle because optical fiber interface fiber break, optical fiber repeats plug, the hot plug of SFP+ optical modules, computer on/off and restarts rear USB3.0 Terminal device recalculates the method that machine host establishes 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 are will appear in optical fiber connection procedure, the first USB3.0 optical fiber transmitting terminal 1 The light transmission with the SFP+ optical modules 24 of USB3.0 optical fiber receiving terminal 2 simultaneously of the optical transmitter and receiver of SFP+ optical modules 14 Machine and photoreceiver establish connection；Be for second the SFP+ optical modules 14 of USB3.0 optical fiber transmitting terminal 1 optical transmitter first with The photoreceiver of the SFP+ optical modules 24 of USB3.0 optical fiber receiving terminal 2 establishes connection, further, USB3.0 optical fiber transmitting terminal 1 The optical transmitters of SFP+ optical modules 24 of photoreceiver and USB3.0 optical fiber receiving terminal 2 of SFP+ optical modules 14 establish and connect； The third is the first SFP+ light with USB3.0 optical fiber receiving terminal 2 of light-receiving of the SFP+ optical modules 14 of USB3.0 optical fiber transmitting terminal 1 The optical transmitter of module 24 establishes 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 establishes connection.

If optical fiber disconnecting caused by because of optical fibre damage or artificially extracting optical fiber, needs to re-start optical fiber When 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, both sides can re-initiate low speed LFPS signals and carry out connection of shaking hands at this time, so that it is determined that connection status, but at this time if 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 When the third situation, what 12 downstream interface of USB3.0 HUB main control chips of USB3.0 optical fiber transmitting terminal 1 received is not LFPS numbers It is believed that number, but Ultrahigh speed data packet, it may result in negotiation failure in this way, computer caused to connect this USB3.0 optical fiber transmitting terminal 13 port of USB3.0 master controllers is crashed, to the USB3.0 HUB main control chips of None- identified USB3.0 optical fiber transmitting terminal 1 12,3.0 terminal device of USB3.0 HUB main control chips 22 and circumscribed USB of USB3.0 optical fiber receiving terminal 2.

USB3.0 optical fiber transmitting terminal 1 and USB3.0 optical fiber receiving terminal 2 often encounter main frame in communication process Shut down, restart, main frame has shut down and has turned back on after some time, can thus face severe problem：Work as computer After host reenters operating system, it often will appear USB3.0 optical fiber transmitting terminal 1 and USB3.0 optical fiber receiving terminal 2 and work as calculating Machine host connection failure, main frame are possible to that USB3.0 equipment conjunction rule can be prompted still can not to link or at all not have Link acts, and the reason of leading to 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 does not simultaneously enter LFPS negotiation states, and is constantly in normal ultrahigh speed link, works as computer After host reenters system, 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 the USB3.0 master controllers 3 of actual computer host receive first be USB3.0 optical fiber transmitting terminal 1 send out The Ultrahigh speed data packet brought fails so as to cause the negotiation of the two, and 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 For the photoreceiver of receiving end 1 after optical fiber disconnecting, the hair output of MCU control unit 16 control instruction makes USB3.0 HUB master controls 22 upstream Interface link of chip disconnects, and USB3.0 HUB main control chips 22 enter standby mode, 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 come out, even if optical fiber is again Connection is normal, can also locate before the no completion link initialization of USB3.0 HUB main control chips 22 of USB3.0 optical fiber receiving terminal 2 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 3 link connection of device is interrupted；When the photoreceiver of USB3.0 optical fiber receiving terminal 2 is after optical fiber reconnects, MCU control unit 26 Hair output control instruction makes USB3.0 HUB main control chips 22 enter normal operating conditions, initializes chip link state, 22 upstream Interface Tx output ends of USB3.0 HUB main control chips 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, after the photoreceiver of USB3.0 optical fiber transmitting terminal 1 receives LFPS optical signals, the hair output control of MCU control unit 16 refers to Enabling 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 generating main frame shutdown 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 link state the output phase of main frame USB3.0 controllers answer control instruction, 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 standby mode, and send LFPS to the USB3.0 main control chips of USB3.0 optical fiber receiving terminals Negotiation signal allows and is both in standby；After generating that main frame shut down, restarts, main frame shuts down again USB3.0 optical fiber, which sends terminal circuit 1, when booting 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 answered according to the link state the output phase with main frame USB3.0 controllers 3 Control instruction makes the USB3.0 upstream Interfaces of USB3.0 optical fiber transmitting terminal 1 be in correct connection status with main frame, when After monitoring the initiation LFPS negotiations of computer USB3.0 controllers 3, the MCU control unit 16 of USB3.0 optical fiber transmitting terminal 1 makes The USB3.0 upstream Interfaces of USB3.0 optical fiber transmitting terminal 1 and the link of main frame USB3.0 master controllers 3 are connected, and to meter It calculates machine host and sends out LFPS signals progress communication negotiation, until communication connection is normal；USB3.0 optical fiber transmitting terminal 1 and 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.

Data flow of the ultrahigh speed USB3.0 terminal devices in communication process as defined in USB3.0 standards must be all encoded into Ultrahigh speed data stream is transmitted, since USB3.0 standards do not reserve the I/O channel of some low rates, in USB3.0 light During fiber communication, in order to ensure that 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 be added any attached in a stream The data added, USB3.0 signals in transmission process 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 the hardware circuit of USB3.0, so this practicality is new Type is realized to USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal based on a special numerical diagnostic channel into line number Word diagnoses and the control of USB3.0 terminal unit remotes.

USB3.0 optical fiber transmitting terminal is described more detail below and USB3.0 optical fiber receiving terminals carry out numerical diagnostic and USB3.0 The specific implementation of terminal unit remote control.

The numerical diagnostic channel refers to the transmitting shutdown control SFP_Tx_ using SFP+ optical module optical transmitters The No Light Alarm signal SFP_LOS output pins of Disable input pins and photoreceiver combine to form a two-way RS- of low rate 232 transmission channels form a numerical diagnostic channel by two-way RS-232 transmission channels, MCU control unit, management interface, meter Calculation machine is realized by numerical diagnostic channel to the power supply circuits of USB3.0 terminal devices or USB3.0 terminal devices itself Control interface sends control instruction, and carries out numerical diagnostic management 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 receives 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 modules indexs such as bias current, receiving sensitivity, the supply voltage of optical module, operating temperature, fault condition, 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_ in 1 numerical diagnostic channel of USB3.0 optical fiber transmitting terminal 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 in 16 numerical diagnostic channel of unit, send after the processing of 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 It changes circuit and converts 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 channel are controlled The rs 232 serial interface signal input LOS_232_RXD input pins 2616 of unit 26, receive the light that MCU control unit 26 will be read after instructing 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 channel LOS_232_RXD input pins 1638, it is defeated by RS-232 rs 232 serial interface signals CMI_RS232_TXD after the processing of MCU control unit 16 Go out foot 1617 and be sent to RS232_RXD input pins 85 by management interface 18, by being sent after USB2.0 to RS232 conversions 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 directly acquires；By this two The numerical diagnostic management to SFP+ optical modules may be implemented in kind method；In addition when the USB3.0 terminals of USB3.0 optical fiber receiving terminal 2 When equipment power supply generates over current fault, MCU control unit 22 can store this failure code, until over current fault releases 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.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that specific embodiment of the present utility model is only limitted to this, for the utility model person of an ordinary skill in the technical field For, without departing from the concept of the premise utility, several simple deduction or replace can also be made, all should be considered as Belong to the utility model and determines protection domain by the claims submitted.

Claims

1. it is a kind of based on optical fiber transmission USB2.0 3.0 HUB, it is characterised in that：Have in the one end being connect with main frame One USB3.0 optical fiber transmitting terminal, in the one end being connect with usb terminal equipment, there are one USB3.0 optical fiber receiving terminals, between the two It is communicated by optical fiber connection；The USB3.0 HUB master control cores of model μ PD720210 are used in USB3.0 optical fiber transmitting terminals μ PD720210 downlink USB3.0 interface electric signals are converted into USB3.0 optical signals by piece by SFP+ optical modules, μ PD720210's Upstream Interface connection is connect with main frame USB3.0 interfaces；In the USB3.0 HUB main control chips of USB3.0 optical fiber receiving terminals Drawn using the exclusive F-OneTM acceleration of Fresco Logic companies for the FL6000 of Fresco Logic companies production, FL6000 Hold up technology, by the USB2.0 of four downlink ports 1.1 1.0 signals USB3.0 signals are accelerated by USB2.0 accelerating engines, The USB3.0 signals of all downstream interfaces are converted by the SFP+ optical modules being connect with FL6000 uplink USB3.0 interfaces USB3.0 optical signals, USB3.0 optical signal energy simultaneous transmissions USB2.0 1.1 1.0 and USB3.0 data, USB3.0 optical fiber receive End while supporting USB3.0 equipment the backward compatible USB2.0 of energy 1.1 1.0 equipment；Using the SFP+ with warm connection function Optical module；Additionally there are one the No Light Alarm LOS of transmitting cut-off signals input and SFP+ optical modules by SFP+ optical modules for tool The two-way RS-232 transmission channels of signal output composition, two-way RS-232 transmission channels, MCU control unit, management interface composition One numerical diagnostic channel.

2. a kind of USB2.0 based on optical fiber transmission as described in claim 1 3.0 HUB, it is characterised in that：In USB3.0 All there are one the MCU control units for USB3.0 communications for optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal, for realizing The link initialization control communicated between USB3.0 optical fiber transmitting terminal and USB3.0 optical fiber receiving terminals.

3. a kind of USB2.0 based on optical fiber transmission as described in claim 1 3.0 HUB, it is characterised in that：In USB3.0 All there are one Rx_DET fictitious loads for optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal, for simulating USB3.0 master controller downlinks The Rx_DET circuits of interface Rx input terminals, realize using common SFP+ optical modules realize USB3.0 electric signals be converted into optical signal into Row fiber optic communication.

4. a kind of USB2.0 based on optical fiber transmission as described in claim 1 3.0 HUB, it is characterised in that：In USB3.0 Optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal are all there are one the SFP+ optical modules with warm connection function, light in use Module is flexibly replaced, and the length of optical fiber can be connected up according to actual needs.

5. a kind of USB2.0 based on optical fiber transmission as described in claim 1 3.0 HUB, it is characterised in that：In USB3.0 All there are one by the transmitting cut-off signals input of SFP+ optical modules and SFP+ optical modules for optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal The output of No Light Alarm LOS signals forms two-way RS-232 transmission channels, and the transmitting cut-off signals input of wherein SFP+ optical modules is used It is exported in the TXD of the RXD inputs of RS232 interface and the No Light Alarm LOS signals output of SFP+ optical modules for RS232.

6. a kind of USB2.0 based on optical fiber transmission as described in claim 1 3.0 HUB, it is characterised in that：There are one by Two-way RS-232 transmission channels, MCU control unit, management interface form a numerical diagnostic channel, are sent in USB3.0 optical fiber The management interface at end can carry out automatically switching the USB2.0 signals of input as needed；The management interface of USB3.0 optical fiber receiving terminals The USB2.0 interfaces of outer computer can be connected.

7. a kind of USB2.0 based on optical fiber transmission as described in claim 1 3.0 HUB, it is characterised in that：In USB3.0 All there are one management interfaces for optical fiber transmitting terminal and USB3.0 optical fiber receiving terminal, can be realized to USB3.0 optical fiber on main frame Transmitting terminal and USB3.0 optical fiber receiving terminals carry out numerical diagnostic and host side by numerical diagnostic channel to USB3.0 terminal devices Control instruction is sent to realize remote control.