CN209625201U - A kind of serial expanded circuit - Google Patents
A kind of serial expanded circuit Download PDFInfo
- Publication number
- CN209625201U CN209625201U CN201920812548.4U CN201920812548U CN209625201U CN 209625201 U CN209625201 U CN 209625201U CN 201920812548 U CN201920812548 U CN 201920812548U CN 209625201 U CN209625201 U CN 209625201U
- Authority
- CN
- China
- Prior art keywords
- chip
- serial
- extension
- extended
- singlechip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Multi Processors (AREA)
Abstract
The utility model relates to a kind of serial expanded circuits, including by Serial Peripheral Interface (SPI) (SPI) connection, once conversion chip, the other end of a conversion chip are connected with one of network interface of one extension chip to singlechip chip；One extension chip is provided with 2-8 network interface, remaining network interface of one extension chip is connected separately with two times transfer chip or secondary extended chip, two times transfer chip is separately connected the SPI of extension singlechip chip, and secondary extended chip passes through the SPI of two times transfer chip connection extension singlechip chip respectively.Also, according to above-mentioned theory, secondary extended chip can provide more extended serial ports further by the more singlechip chips of the connections such as extended chip, four extended chips three times.Through the above technical solutions, can theoretically extend numerous serial port, serial port quantity is set to be no longer influenced by limitation, and this method circuit design is simple, controllability is strong, and due to being hardware expanding serial ports, serial ports real-time is high, high reliablity.
Description
Technical field
The utility model belongs to telecommunication circuit technical field, and in particular to a kind of serial expanded circuit.
Background technique
One complicated electronic system is usually made of large number of module, and system needs are led to each module
News.And simple, reliable serial communication mode is that module level designer usually selects.Therefore the core processor of system needs
With multiple serial ports, to meet the communication need of system Yu numerous modules.Common processor can at most have 4-5
Serial port is still unsatisfactory for demand of the electronic system of certain complexity to serial port quantity.
Utility model content
The purpose of the utility model is to provide a kind of serial expanded circuits, to solve asking for current serial port negligible amounts
Topic.
To achieve the above object, the utility model uses following technical scheme:
A kind of serial expanded circuit, wherein including singlechip chip, the singlechip chip passes through Serial Peripheral Interface (SPI)
(SPI) once conversion chip, the other end of a conversion chip are connected with one of them of one extension chip for connection
Network interface；The one extension chip is provided with 2-8 network interface, remaining network interface of the one extension chip is connected separately with secondary
Conversion chip or secondary extended chip, the two times transfer chip are separately connected the SPI of extension singlechip chip, the secondary expansion
Exhibition chip passes through the SPI of two times transfer chip connection extension singlechip chip respectively.Also, according to above-mentioned theory, secondary extension
Chip can provide more further by the more singlechip chips of the connections such as extended chip, four extended chips three times
Extended serial port.
Wherein, the singlechip chip is STM32F107, has 5 universal asynchronous receiving-transmitting transmitter serial ports (Uart).
Wherein, a conversion chip and the two times transfer chip are network interface/serial ports conversion chip W5500.
Wherein, the one extension chip and the secondary extended chip are Ethernet extended chip KS8995M.
The utility model has the beneficial effects that the utility model is through the above technical solutions, can theoretically extend numerous
Serial port makes serial port quantity be no longer influenced by limitation, and this method circuit design is simple, and controllability is strong, due to being
Hardware expanding serial ports, serial ports real-time is high, high reliablity.
Detailed description of the invention
Fig. 1 is a kind of one circuit diagram of embodiment of serial expanded circuit of the utility model；
Fig. 2 is a kind of two circuit diagram of embodiment of serial expanded circuit of the utility model.
Wherein, appended drawing reference are as follows: 1, singlechip chip；2, a conversion chip；3, one extension chip；4, two times transfer
Chip；5, secondary extended chip.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with specific embodiment to this
Utility model embodiment is described in further detail.
Embodiment 1
A kind of serial expanded circuit, including singlechip chip, singlechip chip are connected once by Serial Peripheral Interface (SPI)
Conversion chip, the other end of a conversion chip are connected with one of network interface of one extension chip；One extension chip is set
5 network interfaces are equipped with, remaining network interface of one extension chip is connected separately with two times transfer chip, and two times transfer chip is separately connected
Extend the SPI of singlechip chip.
Wherein, singlechip chip STM32F107 has 5 Uart.
Wherein, a conversion chip and two times transfer chip are network interface/serial ports conversion chip W5500.
Wherein, one extension chip and secondary extended chip are Ethernet extended chip KS8995M.
The present embodiment expands 25 serial ports altogether, when electronic system is no more than 25 to serial ports quantity demand, Ke Yican
Examine this extended mode.In this fashion, there are 5 singlechip chips, it is arbitrarily a piece of all to can be used as system core processor, be
System can also have multiple cores processor.
Embodiment 2
A kind of serial expanded circuit, including singlechip chip, singlechip chip are connected once by Serial Peripheral Interface (SPI)
Conversion chip, the other end of a conversion chip are connected with one of network interface of one extension chip；One extension chip is set
5 network interfaces are equipped with, remaining network interface of one extension chip is connected separately with secondary extended chip, and secondary extended chip passes through respectively
The SPI of two times transfer chip connection extension singlechip chip.
Wherein, singlechip chip STM32F107 has 5 Uart.
Wherein, a conversion chip and two times transfer chip are network interface/serial ports conversion chip W5500.
Wherein, one extension chip and secondary extended chip are Ethernet extended chip KS8995M.
The present embodiment expands 85 serial ports altogether, in this fashion, has 17 singlechip chips, arbitrarily a piece of all
As system core processor, system can also have multiple cores processor.
In specific engineering, the quantity demand of serial ports is necessarily limited, system designer can according to demand and
Cost in conjunction with the embodiments 1 and the extended method of embodiment 2 design optimal extended mode, theoretically serial ports expansion quantity is unlimited
's.
More than, it is only the preferred embodiment of the utility model, is not the limit for making other forms to the utility model
System, any person skilled in the art are changed or are modified as equivalent variations possibly also with the technology contents of the disclosure above
Equivalent embodiment.But it is all without departing from the content of the technical scheme of the utility model, according to the technical essence of the utility model pair
Any simple modification, equivalent variations and remodeling, still fall within the protection model of technical solutions of the utility model made by above embodiments
It encloses.
Claims (5)
1. a kind of serial expanded circuit, it is characterised in that: including singlechip chip, the singlechip chip is connect by serial peripheral
Once conversion chip, the other end of a conversion chip are connected with one of net of one extension chip for mouth connection
Mouthful；The one extension chip is provided with 2-8 network interface, remaining network interface of the one extension chip is connected separately with secondary turn
Change chip or secondary extended chip, the two times transfer chip, which is separately connected, to be extended the serial peripheral of the singlechip chip and connect
Mouthful, the secondary extended chip passes through the Serial Peripheral Interface (SPI) that the connection of two times transfer chip extends the singlechip chip respectively.
2. serial expanded circuit according to claim 1, it is characterised in that: the singlechip chip is STM32F107, tool
There are 5 universal asynchronous receiving-transmitting transmitter serial ports.
3. serial expanded circuit according to claim 1 or 2, it is characterised in that: a conversion chip and described two
Secondary conversion chip is network interface/serial ports conversion chip W5500.
4. serial expanded circuit according to claim 1 or 2, it is characterised in that: the one extension chip and described two
Secondary extended chip is Ethernet extended chip KS8995M.
5. serial expanded circuit according to claim 3, it is characterised in that: the one extension chip and the secondary expansion
Exhibition chip is Ethernet extended chip KS8995M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920812548.4U CN209625201U (en) | 2019-05-31 | 2019-05-31 | A kind of serial expanded circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920812548.4U CN209625201U (en) | 2019-05-31 | 2019-05-31 | A kind of serial expanded circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209625201U true CN209625201U (en) | 2019-11-12 |
Family
ID=68443341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920812548.4U Active CN209625201U (en) | 2019-05-31 | 2019-05-31 | A kind of serial expanded circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209625201U (en) |
-
2019
- 2019-05-31 CN CN201920812548.4U patent/CN209625201U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105404211A (en) | Coupling communication plate based on EtherCAT technology | |
| CN205844977U (en) | A kind of computer based on 1500A processor of soaring controls mainboard and computer | |
| CN205792687U (en) | A kind of intelligent exchange | |
| CN110377540A (en) | Master-slave equipment switching device and terminal device under a kind of mode based on USB_OTG | |
| CN209625201U (en) | A kind of serial expanded circuit | |
| CN210867765U (en) | Remote control network switch | |
| CN207503207U (en) | For the integrated test system of multiplex roles | |
| CN201985889U (en) | Intelligent multi-service power grid access gateway | |
| CN105159158A (en) | Electrical bus applicable to micro satellites | |
| CN206490682U (en) | CAN and 422/485 common interface circuit | |
| CN207650628U (en) | A kind of cascaded high-voltage frequency converter master control system of multiple processor structure | |
| CN208094609U (en) | A kind of mobile terminal and its Ethernet control circuit | |
| CN207560022U (en) | A kind of embedded server Digital reference service applied to network optimization transmission | |
| CN109818941A (en) | Realize that 10GE interface equipment supports the system and method for 25GE interface | |
| CN110995604A (en) | SpaceWire router level connection structure for expanding SpaceWire port | |
| CN109672634B (en) | 18-path non-blocking SRIO network topology device and method based on switching chip | |
| CN205247143U (en) | Coupling communication board based on etherCAT technique | |
| CN205829689U (en) | A kind of autonomous controlled router controls exchange system | |
| CN210895427U (en) | Multi-serial-port concurrent control system capable of being freely expanded | |
| CN217904426U (en) | High-flexibility modularized field bus | |
| CN211043966U (en) | Isolated CAN bus transceiver | |
| CN210488539U (en) | High-universality master board of industrial personal computer | |
| CN213338374U (en) | EtherCAT bus slave station circuit | |
| CN210143018U (en) | Relay integrated control module based on industrial Ethernet bus | |
| CN108833248A (en) | A kind of structure based on loop network control technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |