CN109902049A - PCI expanding unit - Google Patents
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- CN109902049A CN109902049A CN201910343429.3A CN201910343429A CN109902049A CN 109902049 A CN109902049 A CN 109902049A CN 201910343429 A CN201910343429 A CN 201910343429A CN 109902049 A CN109902049 A CN 109902049A
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- 238000006243 chemical reaction Methods 0.000 description 25
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- 238000000034 method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The present invention relates to a kind of PCI expanding units, comprising: pcb board；Main control unit is arranged on pcb board, and main control unit is used to carry out signal transmission with host computer and exports second control signal to the first external equipment according to the first control signal of host computer；Pci bus interface is arranged on pcb board, and pci bus interface is for being separately connected main control unit and host computer；Transformation network interface is isolated, it is arranged on pcb board, isolation transformation network interface is equipped with isolating transformer and RJ45 interface, and the first end of isolating transformer connects main control unit, the first end of the second end connection RJ45 interface of isolating transformer, the second end of RJ45 interface is for connecting the first external equipment.
Description
Technical field
The present invention relates to control field more particularly to a kind of PCI (Peripheral Component Interconnect,
Peripheral component interconnection) expanding unit.
Background technique
With the development of integrated circuit, electronic equipment is all in that highly integrated, miniaturization direction is developed.It is led in Industry Control
The trend of densification, miniaturization is also presented in domain, the design of industrial personal computer.And industrial personal computer connection peripheral hardware usually require PCI Mezzanine Card into
Row extension connection, traditional PCI expansion board clamping no longer adapt to the demand of industrial personal computer miniaturization since size is too big.
Summary of the invention
Based on this, it is necessary to for the too big technical problem of above-mentioned tradition PCI expansion board clamping size, provide a kind of PCI expansion
Extending apparatus.
The embodiment of the present invention provides a kind of PCI expanding unit, comprising:
Pcb board；
Main control unit is arranged on pcb board, and main control unit is used to carry out signal transmission with host computer and according to host computer
Command signal exports control signal to the first external equipment；
Pci bus interface is arranged on pcb board, and pci bus interface is for being separately connected main control unit and host computer；
Transformation network interface is isolated, is arranged on pcb board, isolation transformation network interface is equipped with isolating transformer and RJ45 interface, isolation
The first end of transformer connects main control unit, and the second end of isolating transformer connects the first end of RJ45 interface, RJ45 interface
Second end is for connecting the first external equipment.
Main control unit includes fpga chip and dsp chip in one of the embodiments,；
Fpga chip be equipped with pci interface controller kernel, pci interface controller kernel for realizing fpga chip with it is upper
Communication between machine；Fpga chip is also used to be communicated by isolation transformation network interface with the first external equipment, and according to upper
The instruction of machine exports control parameter to DSP；
Dsp chip for handling control parameter, generate control signal and be back to fpga chip so that FPGA to
Outer output controls signal.
The reset control of dsp chip is controlled by fpga chip in one of the embodiments,.
PCI expanding unit is additionally provided with lamp holder in one of the embodiments,；Lamp holder is equipped with fixed part and mounting portion；
Fixed position is in lamp holder bottom, fixed part connecting PCB board；
Mounting portion is equipped with the indicator light of several stacked on top, and indicator light is electrically connected with main control unit.
Pcb board is additionally provided with DB9 interface and the board baffle for being limited to pcb board in one of the embodiments,；
One end of DB9 interface connects main control unit, and the other end of DB9 is for connecting the second external equipment；
Board baffle is fixed on DB9 interface.
Pcb board is additionally provided with power management chip in one of the embodiments, and power management chip is used for external power supply
Be converted to multiple voltages and respectively by corresponding output end simultaneously to the corresponding power end power supply of FPGA.
PCB further includes 16 core DSP Peripheral Interfaces in one of the embodiments, for supporting dsp chip to assist by SPI
View, I2C or GPIO and third external device communication.
Dsp chip and fpga chip are equipped with decoupling capacitance in one of the embodiments, and decoupling capacitance is 0420 encapsulation
Patch capacitor.
PCI expanding unit further includes several filter capacitors in one of the embodiments, and filter capacitor is conductive poly
Close object aluminium solid electrolytic capacitor.
Fpga chip and dsp chip are chip bga in one of the embodiments,.
Above-mentioned PCI expanding unit, main control unit are communicated by pci bus with host computer, and main control unit is according to host computer
Instruction is controlled by Ethernet interface to the first external equipment again.Wherein, Ethernet interface is the RJ45 net with isolating transformer
Mouthful, compared with traditional ethernet mouth, not needing using independent isolating transformer, volume is smaller, the area of pcb board is saved,
The occupancy volume for reducing PCI expanding unit, also reduces hardware processing cost.
Detailed description of the invention
Fig. 1 is the module frame chart of one embodiment of the invention PCI expanding unit；
Fig. 2 is the module frame chart of another embodiment of the present invention PCI expanding unit；
Fig. 3 is the structural side view of one embodiment of the invention lamp holder；
Fig. 4 is the structure chart of one embodiment of the invention board baffle；
Fig. 5 is the module frame chart of one embodiment of the invention PCI expanding unit.
Specific embodiment
Purpose, technical solution and technical effect for a better understanding of the present invention, below in conjunction with drawings and examples
Further explaining illustration is carried out to the present invention.It states simultaneously, embodiments described below for explaining only the invention, and does not have to
It is of the invention in limiting.
As shown in Figure 1, the embodiment of the present invention provides a kind of PCI expanding unit, including pcb board 1, main control unit 2, PCI total
Line interface 11 and isolation transformation network interface.
Wherein, pcb board 1, which is used to provide for electronic component, lays space, and pcb board 1 is equipped with printed circuit board wiring, printing electricity
Road wiring is for connecting each electronic component being arranged on pcb board 1.Optionally, pcb board 1 can use lamina, i.e.,
Pcb board 1 one layer printed circuit of laying wiring, wherein one side of the electronic component concentrated setting in pcb board 1.Optionally, PCB
Plate 1 can also use doubling plate, i.e. lay two layers of printed circuit board wiring on PCB, electronic component can be with concentrated setting in pcb board
1 wherein one side, can also all be arranged electronic component on the two sides of pcb board 1 according to actual conditions.Certainly, pcb board 1 can also be with
Using multi-layer board, i.e. pcb board 1 is laid with two layers or more of printed circuit board wiring, can increase layout area in this way, improves device
Integrated level.
Main control unit 2 is arranged on pcb board 1, and main control unit 2 is used to carry out signal transmission with host computer 5, and according to upper
The first control signal of machine 5 issues second control signal.Wherein first control signal is used for control of the host computer 5 to main control unit 2
System, second control signal are used for control of the main control unit 2 to the first external equipment 41.First external equipment 41 can be arbitrarily by
Control equipment, such as sensor, data terminal etc..Main control unit 2 can be the operational blocks which partition system with information processing capability, optional
Ground, main control unit 2 can be microprocessor, and being also possible to FPGA, (Field-Programmable Gate Array, scene can
Program gate array), it can also be PLC (Programmable Logic Controller, programmable logic controller (PLC)) etc., only
It wants to communicate with host computer 5, and according to the first control signal of host computer 5 to the first external equipment 41 output the
Two control signals are controlled.
Host computer 5 is that arbitrarily setting for control command is directly issued to main control unit 2 for being communicated with main control unit 2
It is standby, for example, host computer 5 can be industrial personal computer, it is also possible to PC, can also be that mobile terminal of mobile telephone etc. controls equipment.
Pci bus interface 11 is arranged on pcb board 1, is the local parallel bus interface of external components interconnection, for connecting
Main control unit 2 and host computer 5 realize signal transmission and data exchange between main control unit 2 and host computer 5.Optionally, exist
The golden finger to match with PCI slot on host computer 5 is set on pcb board 1, and golden finger is electrically connected with the main control unit 2 on pcb board 1
It connects, forms pci bus interface 11, realize the communication between host computer 5 and main control unit 2.
Transformation network interface is isolated to be arranged on pcb board 1, transformation network interface is isolated for realizing setting outside main control unit 2 and first
Communication between standby 41, so that main control unit 2 can control the first external equipment 41.Transformation network interface is isolated and is equipped with isolation
Transformer 31 and RJ45 interface 32, the first end of isolating transformer 31 connect main control unit 2, and the second end of isolating transformer 31 connects
The first end of RJ45 interface 32 is connect, the second end of RJ45 interface 32 is for connecting the first external equipment 41.Main control unit 2 by every
It is communicated with RJ45 to the first external equipment 41 from transformer 31, can isolate the interference in signal transmission, it is ensured that communication peace
Complete and circuit safety.Wherein, isolation transformation network interface integrates isolating transformer 31 and RJ45 interface 32, volume compared to it is discrete every
From transformer 31 and RJ45 interface 32, volume is smaller, and the area for occupying PCB is also smaller.Optionally, main control unit 2 passes through PHY
(Physical Layer, physical layer) chip is externally communicated with transformation network interface connection is isolated, i.e. the output end of main control unit 2
The first end of PHY chip is connected, the first end of isolating transformer 31 in the second end connection isolation transformation network interface of PHY chip.Its
In, PHY chip is used to send and receive the data frame of Ethernet, realizes logical between main control unit 2 and the first external equipment 41
Letter.
In traditional PCI expansion board clamping, main control unit 2 is communicated with the first external equipment 41 by Ethernet interface,
It generally requires to be communicated using the combination of PHY chip, independent isolating transformer 31 and RJ45 interface 32, can occupy so very big
PCB surface product.In the embodiment of the present invention, it is provided with isolation transformation network interface, isolation transformation network interface is integrated with 31 He of isolating transformer
RJ45 network interface, smaller compared to traditional design volume, the area for occupying pcb board 1 is also smaller, can save 1 gross area of pcb board.
Meanwhile the reduction of 1 area of pcb board also reduces hardware processing cost.
In one of the embodiments, main control unit 2 include FPGA (Field-Programmable Gate Array,
Field programmable gate array) chip and DSP (Digital Signal Processing, Digital Signal Processing) chip.Wherein
Fpga chip 21 is equipped with pci interface controller kernel.Pci interface controller kernel is used to carry out information transmission according to PCI agreement,
To realize the communication between fpga chip 21 and host computer 5.Fpga chip 21 is also used to outside by isolation transformation network interface and first
Portion's equipment 41 is communicated, and exports control parameter to dsp chip 22 according to the first control signal of host computer 5.Dsp chip 22
After handling control parameter, second control signal is generated, and second control signal is back to fpga chip 21, FPGA core
Piece 21 again exports second control signal outward, is communicated with the first external equipment 41.Optionally, dsp chip 22 be can
Realize any chip of Digital Signal Processing.Optionally, the pci interface controller kernel of fpga chip 21 is to support
PCI2.2 interface controller kernel.
In the present embodiment, FPGA sends control parameter to dsp chip 22 according to the first control signal of host computer 5, by
Dsp chip 22 carries out independent calculating, while mitigating FPGA computational burden, undertakes major calculations processing work by DSP, can
Calculation process speed is improved, to improve information processing efficiency.On the other hand, in traditional scheme, FPGA is connect by pci bus
Mouth 11 is communicated with host computer 5, needs to be arranged independent pci bus special purpose interface, to realize that PCI agreement is transmitted.And this hair
In bright embodiment, fpga chip 21 be equipped with pci interface control kernel, can by pci bus interface 11 directly with host computer 5 into
Row communication.Therefore, the embodiment of the present invention can save PCB area occupied, to reduce the monnolithic case ruler of PCI expanding unit
It is very little.
Fpga chip 21 carries out reset control to dsp chip 22 in one of the embodiments,.Dsp chip 22 need into
Row resets, and in traditional scheme, the reset signal of dsp chip 22 is needed using independent reset chip and reset switch.I.e.
It by the way that independent reset chip and reset switch is arranged, is set according to the reset of dsp chip 22, the reseting pin of DSP is inputted
The high level signal or low level signal that dsp chip 22 is resetted can be controlled.This way is independent due to use
Reset chip and reset switch need to occupy more PCB surface product.And in the embodiment of the present invention, the reset signal of dsp chip 22
It is provided by fpga chip 21, i.e., dsp chip 22 is controlled by fpga chip 21 and resetted, to save answering for dsp chip 22
Position control chip and reset switch, not only save hardware cost, 1 area occupied of pcb board are also saved, so as to reduce
The overall dimension of PCI expanding unit.It should be noted that those skilled in the art can be according to any 22 He of dsp chip
The specification of any fpga chip 21 is configured, to realize that FPGA control dsp chip 22 is resetted, is not discussed in detail here.
PCI expanding unit is additionally provided with lamp holder in one of the embodiments,.Wherein, lamp holder includes fixed part and mounting portion.
Fixed position is in lamp holder bottom, for lamp holder body to be fixed on pcb board 1.Mounting portion be equipped with stacked on top several refer to
Show lamp.Indicator light is electrically connected in main control unit 2, for shining under the control of main control unit 2, to indicate preset work shape
State.It should be noted that if dry indicator light stacked on top, refers to that indicator light is stacked along the direction of vertical PCB surface.It can
Selection of land, indicator light stacked on top one arrange, that is, several indicator lights are formed a line in a manner of stacked on top is installed on lamp holder
In mounting portion.In this way, when multiple indicator lights are arranged, occupied 1 area of pcb board and an indicator light is only used
When area it is suitable.The scheme of traditional multiple indicator lights of setting, needs multiple independent indicator lights being separately positioned on pcb board
On 1, indicator light each in this way can occupy the area of pcb board 1, be unfavorable for reducing the outer dimension of PCI expanding unit.And this hair
Bright embodiment need to only occupy the corresponding pcb board 1 of an indicator light by using the lamp holder for being equipped with a column stacked on top indicator light
The multiple indicator lights of access can be realized in area.Therefore compared with traditional indicator light set-up mode, the embodiment of the present invention can be saved
Indicator light area occupied is saved, is conducive to save 1 cost of pcb board, is also beneficial to reduce the overall dimension of PCI expanding unit.
Optionally, lamp holder is equipped with the mounting portion for installing two indicator lights.The side view of lamp holder is as shown, the side of lamp holder is in length
The rectangle for being 9 millimeters for 10.06 mm wides, mounting portion are set to a side of lamp holder.Optionally, indicator light encapsulation protrudes outward
2.7 millimeter.The bottom of lamp holder is fixed part, equipped with several legs for being electrically connected with electronic component on pcb board 1.It can
Selection of land, leg length are 4 millimeters, and optionally, the spacing between leg is 2.54 millimeters.
The embodiment of the present invention is only taking up an indicator light pair by using the lamp holder for being equipped with the multiple indicator lights of stacked on top
The setting that multiple indicator lights are realized under the premise of the PCB surface product answered, saves 1 area of pcb board, reduces PCI expanding unit
Overall dimensions.
Pcb board 1 is additionally provided with DB9 interface 8 and the board gear for being limited to pcb board 1 in one of the embodiments,
Piece.Wherein, DB9 interface 8 is D type data interface connector, for connecting the connection between electronic equipment.In the embodiment of the present invention
In, one end of DB9 interface 8 connects main control unit 2, and the other end is for connecting the second external equipment, to realize main control unit 2 and the
Communication between two external equipments.It is communicated by DB9 interface 8 with main control unit 2 it is alternatively possible to configure the second external equipment,
Obtain the working condition of PCI expanding unit；It is alternatively possible to which configuring the second external equipment passes through DB9 interface 8 and main control unit 2
Communication, debugs main control unit 2, realizes preset function, for example for debugging of alarming, realize warning function；Or it uses
It is debugged in display, realizes display function etc..
The side of DB9 interface 8 on pcb board 1 is arranged in board baffle, for limiting to pcb board 1, while can hinder
The gap between 1 electronic component interface of pcb board is kept off, dustproof effect is played, 1 building up inside dust of pcb board is reduced, avoids PCB
Electronic component on plate 1 is damaged because of dust electrostatic.Wherein, as shown, for board baffle in one embodiment
Structure chart, since the DB9 interface 8 of standard is designed with the fixed part for the docking of two interfaces, in embodiments of the present invention, board
Baffle is equipped with the mounting structure that matches of fixed part in DB9 interface 8, is matched by the fixed part with DB9 and is fixed on DB9 and connects
On mouth 8.Optionally, board baffle is screwed on DB9 interface 8.In traditional scheme, fixing board card baffle is by plate
Clip shutter is fixed on pcb board 1, i.e., by opening up fixation hole on pcb board 1, opens up on board baffle opposite with fixation hole
The connection structure answered is fixed board baffle by the cooperation between connection structure on fixation hole on pcb board 1 and board baffle
On pcb board 1.This scheme needs open up fixation hole on pcb board 1, thus need to occupy 1 area of pcb board, are unfavorable for PCI
The miniaturization of expanding unit.And the embodiment of the present invention makes full use of DB9 to tie by the way that board baffle to be fixed on DB9 interface 8
Structure does not need to open up fixation hole on pcb board 1,1 area of pcb board of saving, to be conducive to PCI expanding unit monnolithic case
The Miniaturization Design of size.
16 core DSP Peripheral Interfaces 7 are additionally provided on pcb board in one of the embodiments,.The of 16 core DSP Peripheral Interfaces 7
One connecting pin is used to connect the second connection end of 22,16 core DSP Peripheral Interface 7 of dsp chip for connecting third external equipment.16
Core DSP Peripheral Interface 7 is for realizing the communication between dsp chip 22 and third external equipment.Wherein, 16 core DSP Peripheral Interface 7
For compatible SPI (Serial Peripheral Interface, Serial Peripheral Interface (SPI)), I2C (Inter-Integrated
Circuit, twin wire universal serial bus) or GPIO (General-purpose input/output, universal input and output connect
Mouthful) DSP Peripheral Interface so that connect can be by SPI protocol, I2C agreement for the core DSP of dsp chip 22 and 16 Peripheral Interface 7
Or GPIO agreement is communicated with third external equipment.
In traditional scheme, dsp chip 22 needs to connect solely to be communicated by SPI with third external equipment
The interface of vertical support SPI；Similarly, to be communicated by I2C with third external equipment, need to connect independent support
The interface of I2C；If desired it is communicated by GPIO with third external equipment, then needs to connect connecing for independent support GPIO
Mouthful.If desired meet above-mentioned kind of communication mode simultaneously, then need that three independent interfaces and dsp chip 22 are arranged on pcb board 1
Connection, 22 side of dsp chip can realize that three kinds of communication modes are connect with third external equipment.In this way, then needing to occupy three interfaces
Corresponding 1 area of pcb board wastes 1 resource of pcb board, is unfavorable for the miniaturization of PCI expanding unit.And the embodiment of the present invention passes through
Using 16 core DSP Peripheral Interfaces 7, above-mentioned three kinds of communication modes can be compatible with, so that dsp chip 22 can pass through connection one
A interface, which can be realized, needs to connect the function that three interfaces are just able to achieve in traditional scheme, greatly reduce 1 occupancy face of pcb board
Product, reduces the overall dimension of PCI expanding unit.It should be noted that passing through 16 core DSP Peripheral Interfaces 7 and dsp chip
22 connection, to those skilled in the art, can according to SPI protocol, I2C agreement and GPIO agreement to 16 core DSP outside
If each pin in interface 7 is defined to realize and show three kinds of communication modes by several causes for gossip of the peripheral hardware, this is this field
What technical staff may be implemented, details are not described herein.
Power management chip 9 is additionally provided on pcb board 1 in one of the embodiments,.Power management chip 9 is used for will be outer
Portion's power supply is converted to multiple voltages, and is powered respectively by corresponding output end to the corresponding power end of fpga chip 21.It can be with
Understand, for fpga chip 21, it usually needs while different voltages being provided and are powered, it is therefore desirable to electricity is carried out to external power supply
Pressure conversion is to realize that different voltages are powered.In traditional scheme, every conversion for realizing a voltage needs an individually designed electricity
Voltage conversion circuit, and voltage conversion circuit often may require that the multiple components of setting, can occupy a large amount of 1 area of pcb board in this way.
In general, the voltage conversion circuit of traditional scheme, which also tends to use, can only carry out the voltage conversion chip of single voltage conversion, for
The demand for needing multichannel different voltages to power, then need that multiple voltage conversion chips are arranged, occupy a large amount of 1 areas of pcb board.And this
In inventive embodiments, using a power management chip 9, multiple voltage conversion can be carried out to external power supply, and can be with multichannel
It exports simultaneously, the area that need to only occupy a power management chip 9 can be realized, and not only save 1 area of pcb board, but also save
Hardware cost and development cost are also beneficial to the Miniaturization Design of PCI expanding unit.Optionally, the use of power management chip 9 can
The TI power management chip 9 of 3.3V, 2.5V and 1.2V voltage source is provided simultaneously.Certainly, power management chip 9 can also use
The power management chip 9 of tri- road 3.3V, 2.5V and 1.2V independent assortment output, the choosing for power management chip 9 can be provided
Type is not discussed in detail here as long as being that those skilled in the art can be realized according to foregoing description.
Optionally, DSP power management chip 9 is also provided on pcb board 1.DSP power management chip 9 is used for will be external
Power supply is converted to multiple voltages, and is powered respectively by corresponding output end to the corresponding power end of fpga chip 21.It can be with
Solution, for dsp chip 22, it usually needs while different voltages being provided and are powered, it is therefore desirable to voltage is carried out to external power supply
Conversion is to realize that different voltages are powered.In traditional scheme, every conversion for realizing a voltage needs an individually designed voltage
Conversion circuit, and voltage conversion circuit often may require that the multiple components of setting, or use one for a voltage conversion
Voltage conversion chip can occupy a large amount of 1 area of pcb board in this way.And in the embodiment of the present invention, using a DSP power management
Chip 9 can be carried out multiple voltage conversion to external power supply, and can be exported simultaneously with multichannel, and a DSP power supply pipe need to be only occupied
The area of reason chip 9 can be realized, and has not only saved 1 area of pcb board, but also save hardware cost and development cost, has been also beneficial to
The Miniaturization Design of PCI expanding unit.
Optionally, power management chip 9 is additionally provided on pcb board 1 in one of the embodiments,.Power management chip 9 is used
It is corresponding to fpga chip 21 and dsp chip 22 by corresponding output end in external power supply is converted to multiple voltages, and respectively
Power end power supply.It will be seen that for fpga chip 21 and dsp chip 22, it usually needs while different voltages progress being provided
Power supply, it is therefore desirable to which voltage conversion is carried out to realize that different voltages are powered to external power supply.It is every to realize one in traditional scheme
The conversion of voltage needs an individually designed voltage conversion circuit, and voltage conversion circuit often may require that the multiple first devices of setting
Part can occupy a large amount of 1 area of pcb board in this way.In general, the voltage conversion circuit of traditional scheme, which also tends to use, can only carry out list
The voltage conversion chip of one voltage conversion then needs to be arranged multiple voltages and turns for the demand for needing multichannel different voltages to power
Chip is changed, a large amount of 1 areas of pcb board are occupied.And in the embodiment of the present invention, it, can be to external electrical using a power management chip 9
Source carries out multiple voltage conversion, and can be exported simultaneously with multichannel, and the area that need to only occupy a power management chip 9 can be real
It is existing, 1 area of pcb board was not only saved, but also save hardware cost and development cost, and had been also beneficial to the miniaturization of PCI expanding unit
Design.
Dsp chip 22 and fpga chip 21 are equipped with patch type decoupling capacitance in one of the embodiments,.It can know
Road reduces between route because interfering caused by coupling effect, dsp chip 22 and fpga chip 21 for the stabilization of signal transmission
Require setting decoupling capacitance.Wherein traditional decoupling capacitance package area is larger, needs to occupy more 1 area of pcb board, no
Conducive to the miniaturization of PCI expanding unit.In embodiments of the present invention, decoupling capacitance uses the patch decoupling capacitance of 0402 encapsulation,
To save 1 area of pcb board, reduce the outer dimension of PCI expanding unit.
Pcb board 1 is additionally provided with several electric conductive polymer aluminium solid electrolytic capacitors in one of the embodiments,.It can be with
Know, for the alternating component in filtering circuit, keeps output more smooth, usually using filter capacitor.And in traditional scheme, it uses
It is often bigger in the capacitor of filtering, need to occupy more 1 area of pcb board.And in the present solution, filter capacitor uses electric conductivity
Polymer aluminium solid electrolytic capacitor has smaller bonding area, occupies smaller 1 area of pcb board, is conducive to PCI extension dress
The miniaturization set.Optionally, filtering of the organic semiconductor aluminium solid electrolytic capacitor for rectification circuit on pcb board 1.Optionally,
Filtering of the electric conductive polymer aluminium solid electrolytic capacitor on Buck conversion circuit (BUCK) on pcb board 1.
Fpga chip 21 and dsp chip 22 are BGA (Ball Grid Array, soldered ball in one of the embodiments,
Array package) encapsulation chip.Compared with traditional scheme, chip bga is smaller, can save 1 area of pcb board.
The jtag interface 10 of spacing 2mm, 14PIN straight feet socket is additionally provided on pcb board 1 in one of the embodiments, is used
It is debugged in fpga chip 21 and dsp chip 22.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of PCI expanding unit characterized by comprising
Pcb board；
Main control unit is arranged on the pcb board, and the main control unit is used to carry out signal transmission and basis with the host computer
The first control signal of the host computer exports second control signal to the first external equipment；
Pci bus interface is arranged on the pcb board, and the pci bus interface is for being separately connected the main control unit and institute
State host computer；
Transformation network interface to be isolated, is arranged on the pcb board, the isolation transformation network interface is equipped with isolating transformer and RJ45 interface,
The first end of the isolating transformer connects the main control unit, and the second end of the isolating transformer connects the RJ45 interface
First end, the second end of the RJ45 interface is for connecting the first external equipment.
2. PCI expanding unit according to claim 1, which is characterized in that the main control unit includes fpga chip and DSP
Chip；
The fpga chip is equipped with pci interface controller kernel, and the pci interface controller kernel is for realizing the FPGA core
Communication between piece and the host computer；The fpga chip is also used to by outside the isolation transformation network interface and described first
Equipment is communicated, and exports control parameter to the dsp chip according to the first control signal of the host computer；
The dsp chip is for handling the control parameter, generating the second control signal and being back to described
Fpga chip is so that the FPGA exports the second control signal outward.
3. PCI expanding unit according to claim 2, which is characterized in that the fpga chip carries out the dsp chip
Reset control.
4. PCI expanding unit according to claim 1, which is characterized in that be additionally provided with lamp holder；The lamp holder includes fixed part
And mounting portion；
The fixed position connects the pcb board in the lamp holder bottom, the fixed part；
The mounting portion is equipped with the indicator light of several stacked on top, and the indicator light is electrically connected with the main control unit.
5. PCI expanding unit according to claim 4, which is characterized in that the pcb board is additionally provided with DB9 interface and is used for
The board baffle that the pcb board is limited；
One end of the DB9 interface connects the main control unit, and the other end of the DB9 is for connecting the second external equipment；
The board baffle is fixed on the DB9 interface.
6. PCI expanding unit according to claim 3, which is characterized in that the pcb board is additionally provided with power management chip,
The power management chip is used to be converted to external power supply multiple voltages and respectively by corresponding output end simultaneously to described
Fpga chip and/or the corresponding power end power supply of dsp chip.
7. PCI expanding unit according to claim 6, which is characterized in that the pcb board further includes that 16 core DSP peripheral hardwares connect
Mouthful, for supporting the dsp chip to pass through SPI protocol, I2C agreement or GPIO agreement and third external device communication.
8. according to claim 6 PCI expanding unit, which is characterized in that the dsp chip and the fpga chip are equipped with
The patch decoupling capacitance of 0402 encapsulation.
9. PCI expanding unit according to claim 6, which is characterized in that further include several filter capacitors, the filtering
Capacitor is electric conductive polymer aluminium solid electrolytic capacitor.
10. according to Claims 2 or 3 or the described in any item PCI expanding units of 6-9, which is characterized in that the fpga chip
It is chip bga with the dsp chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343429.3A CN109902049A (en) | 2019-04-26 | 2019-04-26 | PCI expanding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343429.3A CN109902049A (en) | 2019-04-26 | 2019-04-26 | PCI expanding unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109902049A true CN109902049A (en) | 2019-06-18 |
Family
ID=66956468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910343429.3A Pending CN109902049A (en) | 2019-04-26 | 2019-04-26 | PCI expanding unit |
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| Country | Link |
|---|---|
| CN (1) | CN109902049A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114036093A (en) * | 2021-10-11 | 2022-02-11 | 北京小米移动软件有限公司 | Adapter sub-board |
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