CN108763133A - A kind of device for realizing the switching of USB interface multi-controller based on FPGA - Google Patents
A kind of device for realizing the switching of USB interface multi-controller based on FPGA Download PDFInfo
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- CN108763133A CN108763133A CN201810540656.0A CN201810540656A CN108763133A CN 108763133 A CN108763133 A CN 108763133A CN 201810540656 A CN201810540656 A CN 201810540656A CN 108763133 A CN108763133 A CN 108763133A
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- Prior art keywords
- usb
- fpga
- usb interface
- programmable chip
- switching
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Sources (AREA)
Abstract
The present invention provides a kind of devices for realizing the switching of USB interface multi-controller based on FPGA, including：Programmable chip FPGA, 5V_USB power supply, switch of power supply output MOSFET, usb interface connector；The programmable chip FPGA includes high speed I/O pin, logic module, ADC pins, communication interface, MCU, GPIO pin.The signal of multiple USB controllers is connect by the present invention with programmable chip FPGA, after electric signal switching inside programmable chip FPGA, it is connect with usb interface connector, the real time monitoring to 5V_USB supply voltages is realized by the ADC pins of programmable chip FPGA.Reduce the quantity that device panel reserves usb interface connector; it realizes to 5V_USB power supply overcurrent protection functions; it solves device panel and reserves the device panel per-interface space arrangement complexity that excessive usb interface connector is brought; practicability reduces, the problem of usb bus design complexity and traditional 5V_USB power supply overcurrent protection function effect differences.
Description
Technical field
The present invention relates to signal switching apparatus, especially a kind of dress for realizing the switching of USB interface multi-controller based on FPGA
It sets.
Background technology
USB interface is that the equipment such as computer, server and storage array all support general-purpose interface, be frequently used for outside USB
Short time low capacity data transmission between if, if system operation daily record is downloaded, the upload of upgrade package.In system debug, also may be used
Using as debugging interface.
Computer system supports USB interface at present, is substantially by CPU, PCH or USB HUB chips are directly led out, periphery
USB interface and chip USB Port are to correspond, and a controller can correspond to before equipment one or more USB on (rear) panel
Standard peripherals interface.But as high-end server or storage array, because performance considers, it will usually there are two, four or
More multi-controller (control panel) while concurrent working.Presently most used USB power source overcurrent protection function, mainly will be each
USB Host interfaces are equipped with an overcurrent protection OCP PIN pin, which is connected with the 5V_USB on corresponding USB interface
(indirectly connected, signal passes through simple process, makes electrical level match), when there is over current fault, which is pulled low, and USB Host are received
To warning information, USB interface closing or other protection acts can be carried out.
Excessive USB connector interface is reserved, device panel per-interface space arrangement can be caused complicated, greatly reduce practicality
Property, while the problem for bringing usb bus design complicated；Traditional 5V_USB power supply overcurrent protection function effects are poor, need corresponding
It improves to provide better 5V_USB power supplys overcurrent protection function.
Invention content
The object of the present invention is to provide a kind of devices for realizing the switching of USB interface multi-controller based on FPGA, it is intended to solve
Device panel reserves the device panel per-interface space arrangement complexity that excessive USB connector interface is brought, and practicability reduces, and USB is total
The problem of line design complexity and traditional 5V_USB power supply overcurrent protection function effect differences.
To reach above-mentioned technical purpose, the switching of USB interface multi-controller is realized based on FPGA the present invention provides a kind of
Device, including：Programmable chip FPGA, 5V_USB power supply, switch of power supply output MOSFET, usb interface connector；It is described to compile
Journey chip FPGA includes high speed I/O pin, logic module, ADC pins, communication interface, MCU, GPIO pin.
Preferably, the switch of power supply output MOSFET is connect with programmable chip FPGA, 5V_USB power supply.
Preferably, the 5V_USB power supplys are connect with the usb interface connector.
Preferably, the high speed I/O pin is controlled for the programmable chip FPGA connection usb interface connectors and USB
Device.
Preferably, the switching that the MCU connects for realizing the programmable chip FPGA from different USB controllers.
Preferably, the logic module realizes usb interface connector connection acquiescence USB for the programmable chip FPGA
Controller.
Preferably, the ADC pins are used for the programmable chip FPGA connections 5V_USB power supplys.
Preferably, OCP of the GPIO pins for the USB Host of the programmable chip FPGA connections USB controller
Pin.
Preferably, the communication interface receives system configuration command for the programmable chip FPGA.
The effect provided in invention content is only the effect of embodiment, rather than invents all whole effects, above-mentioned
A technical solution in technical solution has the following advantages that or advantageous effect：
Compared with prior art, the signal of multiple USB controllers is connect by the present invention with programmable chip FPGA, by can
After programming the electric signal switching of the inside chip FPGA, it is connect with usb interface connector, passes through the ADC pins of programmable chip FPGA
Realize the real time monitoring to 5V_USB supply voltages.The quantity that device panel reserves usb interface connector is reduced, is realized pair
5V_USB power supply overcurrent protection functions solve device panel and reserve the device panel interface that excessive usb interface connector is brought
Space layout is complicated, and practicability reduces, the complicated and traditional 5V_USB power supply overcurrent protection functions effect difference of usb bus design
Problem.
Description of the drawings
Fig. 1 is a kind of device for realizing the switching of USB interface multi-controller based on FPGA provided in the embodiment of the present invention
Schematic diagram.
Specific implementation mode
In order to clearly illustrate the technical characterstic of this programme, below by specific implementation mode, and its attached drawing is combined, to this
Invention is described in detail.Following disclosure provides many different embodiments or example is used for realizing the different knots of the present invention
Structure.In order to simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relationship between various embodiments and/or setting is discussed.It should be noted that illustrated component is not necessarily to scale in the accompanying drawings
It draws.Present invention omits the descriptions to known assemblies and treatment technology and process to avoid the present invention is unnecessarily limiting.
It is provided for the embodiments of the invention below in conjunction with the accompanying drawings a kind of based on FPGA realization USB interface multi-controller switchings
Device be described in detail.
As shown in Figure 1, the embodiment of the invention discloses a kind of dresses for realizing the switching of USB interface multi-controller based on FPGA
It sets, including：Programmable chip FPGA, 5V_USB power supply, switch of power supply output MOSFET, usb interface connector；It is described programmable
Chip FPGA includes high speed I/O pin, logic module, ADC pins, communication interface, MCU, GPIO pin.
The high speed I/O pin is used for the programmable chip FPGA connections usb interface connector, the high speed I/O pin
For the multiple USB controllers of the programmable chip FPGA connections.Realize the programmable chip FPGA and multiple USB controllers
And usb interface connector connection.
The switch of power supply output MOSFET is connect with programmable chip FPGA, 5V_USB power supply.After system normally starts,
Programmable chip FPGA opens switch of power supply output MOSFET, and 5V_USB power supplys is made to power for usb interface connector.
The logic module realizes usb interface connector connection acquiescence USB controller for the programmable chip FPGA.
When programmable chip FPGA starts, the logic module loads default configuration, realizes that usb interface connector acquiescence is controlled with USB
Device 1 is connected to.The code of the logic module is accordingly changed and is recompilated and burning, can will acquiescence connection USB controls
Device setting processed is revised as being changed to USB controller 2 or other USB controllers.
, it can be achieved that the switching of the USB controller to usb interface connector connection, there are following three kinds of feelings after system starts
Condition：
One：Because of USB controller failover.In system operation, the USB controller of usb interface connector connection occurs such as
Hang the failures such as dead, controller power down, usb interface connector and the USB controller that currently connect can not normal communication, it is described to compile
The current USB controller sequence of connection is switched to next USB controller or switched to by the MCU in journey chip FPGA is
The specified USB controller of system.
Two：Management system actively carries out USB controller switching.When system carries out software upgrading, system is tested oneself, it is
System needs to operate specific USB controller, and in certain time, this specific USB controller can not communication with the outside world or transmission
Data, cause usb interface connector that it is connected can not normal use, the MCU in the programmable chip FPGA will
The current USB controller sequence of connection switches to next USB controller or switches to the specified USB controller of system.
Three：User configuration/order switching.User sends out the configuration of switching usb interface connector on system management interface
Order, the programmable chip FPGA receive system configuration command by the communication interface, in the programmable chip FPGA
The MCU the current USB controller of connection is switched into the USB controller that user specifies.
The ADC pins are used for the programmable chip FPGA connections 5V_USB power supplys, and the GPIO pins are for described
The OCP pins of the USB Host of programmable chip FPGA connection USB controllers.
The ADC pins of the programmable chip FPGA as input, for detect 5V_USB power supplys whether occur it is different
Often, when input voltage is less than setting thresholding, overcurrent as occurs.The programmable chip FPGA closes switch of power supply output
MOSFET prevents failure from causing more serious consequence.Meanwhile the programmable chip FPGA is dragged down accordingly by the GPIO pins
USB controller USB Host OCP pins, inform that over current fault occurs in corresponding USB controller usb interface connector, will be right
Usb signal temporary close is answered, error of transmission data or failure propagation are prevented.
Each signal of multiple USB controllers is connect by the present invention with programmable chip FPGA, by programmable chip FPGA
It after internal electric signal switching, connect with usb interface connector, is realized to 5V_USB by the ADC pins of programmable chip FPGA
The real time monitoring of supply voltage.The quantity that device panel reserves usb interface connector is reduced, is realized to 5V_USB power supply mistakes
Defencive function is flowed, device panel is solved and reserves the device panel per-interface space arrangement complexity that excessive usb interface connector is brought,
Practicability reduces, the problem of usb bus design complexity and traditional 5V_USB power supply overcurrent protection function effect differences.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (9)
1. a kind of device for realizing the switching of USB interface multi-controller based on FPGA, which is characterized in that including：Programmable chip
FPGA, 5V_USB power supply, switch of power supply output MOSFET, usb interface connector；The programmable chip FPGA includes High-speed I/O
Pin, logic module, ADC pins, communication interface, MCU, GPIO pin.
2. a kind of device for being realized the switching of USB interface multi-controller based on FPGA according to claim 1, feature are existed
In the switch of power supply output MOSFET is connect with programmable chip FPGA, 5V_USB power supply.
3. a kind of device for being realized the switching of USB interface multi-controller based on FPGA according to claim 1, feature are existed
In the 5V_USB power supplys are connect with the usb interface connector.
4. a kind of device for being realized the switching of USB interface multi-controller based on FPGA according to claim 1, feature are existed
In the high speed I/O pin is used for the programmable chip FPGA connection usb interface connectors and USB controller.
5. a kind of device for being realized the switching of USB interface multi-controller based on FPGA according to claim 1, feature are existed
In the switching that the MCU connects for realizing the programmable chip FPGA from different USB controllers.
6. a kind of device for being realized the switching of USB interface multi-controller based on FPGA according to claim 1, feature are existed
In the logic module realizes usb interface connector connection acquiescence USB controller for the programmable chip FPGA.
7. a kind of device for being realized the switching of USB interface multi-controller based on FPGA according to claim 1, feature are existed
In the ADC pins are used for the programmable chip FPGA connections 5V_USB power supplys.
8. a kind of device for being realized the switching of USB interface multi-controller based on FPGA according to claim 1, feature are existed
In OCP pin of the GPIO pins for the USB Host of the programmable chip FPGA connections USB controller.
9. a kind of device for being realized the switching of USB interface multi-controller based on FPGA according to claim 1, feature are existed
In the communication interface receives system configuration command for the programmable chip FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540656.0A CN108763133A (en) | 2018-05-30 | 2018-05-30 | A kind of device for realizing the switching of USB interface multi-controller based on FPGA |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540656.0A CN108763133A (en) | 2018-05-30 | 2018-05-30 | A kind of device for realizing the switching of USB interface multi-controller based on FPGA |
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| Publication Number | Publication Date |
|---|---|
| CN108763133A true CN108763133A (en) | 2018-11-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810540656.0A Pending CN108763133A (en) | 2018-05-30 | 2018-05-30 | A kind of device for realizing the switching of USB interface multi-controller based on FPGA |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201117015A (en) * | 2009-11-02 | 2011-05-16 | Asustek Comp Inc | USB host controlling apparatus |
| CN104111910A (en) * | 2014-07-18 | 2014-10-22 | 山东超越数控电子有限公司 | USB interface overload automatic switching method |
| CN105893295A (en) * | 2016-04-22 | 2016-08-24 | 福州瑞芯微电子股份有限公司 | Multiplexing system based on USB 3.0 port |
| CN107391405A (en) * | 2017-05-15 | 2017-11-24 | 联发科技（新加坡）私人有限公司 | Usb circuit and USB device |
-
2018
- 2018-05-30 CN CN201810540656.0A patent/CN108763133A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201117015A (en) * | 2009-11-02 | 2011-05-16 | Asustek Comp Inc | USB host controlling apparatus |
| CN104111910A (en) * | 2014-07-18 | 2014-10-22 | 山东超越数控电子有限公司 | USB interface overload automatic switching method |
| CN105893295A (en) * | 2016-04-22 | 2016-08-24 | 福州瑞芯微电子股份有限公司 | Multiplexing system based on USB 3.0 port |
| CN107391405A (en) * | 2017-05-15 | 2017-11-24 | 联发科技（新加坡）私人有限公司 | Usb circuit and USB device |
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Application publication date: 20181106 |
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