CN206322109U - A kind of utilization CPLD realizes the circuit of hardware switch machine - Google Patents
A kind of utilization CPLD realizes the circuit of hardware switch machine Download PDFInfo
- Publication number
- CN206322109U CN206322109U CN201621284131.8U CN201621284131U CN206322109U CN 206322109 U CN206322109 U CN 206322109U CN 201621284131 U CN201621284131 U CN 201621284131U CN 206322109 U CN206322109 U CN 206322109U
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- circuit
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- power
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Abstract
The utility model is related to the circuit that a kind of utilization CPLD realizes hardware switch machine, including the host CPU powered by power circuit, power circuit is controlled to start working by button boot-strap circuit, it is characterized in that, also include CPLD circuit and for detecting the key press detecting circuit whether key and closing key are pressed, key press detecting circuit provides starting-up signal or off signal to CPLD circuit, and CPLD circuit is to power circuit output start latch signal and closes power supply signal.The utility model uses CPLD in mobile financial POS, saves system resource, considerably reduces functional module and intermodule line on circuit board.System is modified upgrading with its flexible design and online upgrading mode simultaneously, reduce the modification in itself to circuit board, improve system global reliability, saved plate-making expense, shorten the cycle of design.The utility model has lower cost and the control of more preferable circuit.
Description
Technical field
The utility model is related to the circuit that a kind of utilization CPLD realizes hardware switch machine.
Background technology
In mobile financial payment terminal equipment (mobile financial POS), host CPU is unable to work in the case of no power supply
Make, it is necessary to which peripheral circuit coordinates hardware to realize power on/off function, to start CPU.But the existing periphery for realizing power on/off function
Circuit is mostly more complicated.
The content of the invention
The purpose of this utility model is to realize the switching on and shutting down latch function of POS.
In order to achieve the above object, the technical solution of the utility model there is provided one kind and realize hardware switch using CPLD
The circuit of machine, including the host CPU powered by power circuit, power circuit are controlled to start working by button boot-strap circuit, its feature
It is, also including CPLD circuit and for detecting the key press detecting circuit whether key and closing key are pressed, button detection
Circuit provides starting-up signal or off signal to CPLD circuit, and CPLD circuit exports start latch signal and closing to power circuit
Power supply signal, power circuit keeps working condition or according to the stopping of the closing power supply signal of acquisition according to start latch signal is obtained
Work.
The utility model uses CPLD in mobile financial POS, saves system resource, considerably reduces work(on circuit board
Can module and intermodule line.System is modified upgrading, reduced with its flexible design and online upgrading mode simultaneously
To the modification of circuit board in itself, system global reliability is improved, plate-making expense has been saved, the cycle of design is shortened.This reality
With new there is lower cost and more preferable circuit to control.
Brief description of the drawings
Fig. 1 realizes the electrical schematic diagram of the circuit of hardware switch machine for a kind of utilization CPLD that the utility model is provided.
Embodiment
To become apparent the utility model, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
As shown in figure 1, the utility model provides the circuit that a kind of utilization CPLD realizes hardware switch machine, including by power supply
Host CPU that circuit is powered, CPLD circuit and for detecting the key press detecting circuit whether key and closing key are pressed, power supply
Circuit is controlled to start working by button boot-strap circuit, is also included, key press detecting circuit provides starting-up signal or pass to CPLD circuit
Machine signal, CPLD circuit is to power circuit output start latch signal and closes power supply signal, and power circuit is according to being started shooting
Latch signal keeps working condition or is stopped according to the closing power supply signal of acquisition.
Start process of the present utility model is：After starting key is pressed, power circuit is started working, and CPLD circuit starts work
Make.CPLD circuit is by internal circuit timing, and after confirming that button is effective, output latch signal control power supply circuit works have always
Effect.Host supplying power, host CPU starts normal work, and start is completed.
Shutdown process：After button is pressed, CPLD circuit is by internal circuit timing, and after confirming that button is effective, output is closed
Power supply signal.Main frame power down, host CPU is stopped, and shutdown is completed.
Whole switching on and shutting down process, the participation without host CPU, completely by hardware circuit and CPLD circuit control realization, is realized
Switching on and shutting down to host CPU are effectively controlled.
Claims (1)
1. a kind of utilization CPLD realizes the circuit of hardware switch machine, including the host CPU powered by power circuit, power circuit by by
The control of key boot-strap circuit is started working, it is characterised in that also including CPLD circuit and for detecting whether are key and closing key
The key press detecting circuit being pressed, key press detecting circuit provides starting-up signal or off signal to CPLD circuit, CPLD circuit to
Power circuit output start latch signal and closing power supply signal, power circuit is according to acquisition start latch signal holding work shape
State is stopped according to the closing power supply signal of acquisition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621284131.8U CN206322109U (en) | 2016-11-28 | 2016-11-28 | A kind of utilization CPLD realizes the circuit of hardware switch machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621284131.8U CN206322109U (en) | 2016-11-28 | 2016-11-28 | A kind of utilization CPLD realizes the circuit of hardware switch machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206322109U true CN206322109U (en) | 2017-07-11 |
Family
ID=59264382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621284131.8U Active CN206322109U (en) | 2016-11-28 | 2016-11-28 | A kind of utilization CPLD realizes the circuit of hardware switch machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206322109U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797960A (en) * | 2017-11-03 | 2018-03-13 | 山东超越数控电子股份有限公司 | A kind of server architecture of multiprocessor |
| CN108845880A (en) * | 2018-05-25 | 2018-11-20 | 郑州云海信息技术有限公司 | A kind of server pools product power on/off system and method |
-
2016
- 2016-11-28 CN CN201621284131.8U patent/CN206322109U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797960A (en) * | 2017-11-03 | 2018-03-13 | 山东超越数控电子股份有限公司 | A kind of server architecture of multiprocessor |
| CN108845880A (en) * | 2018-05-25 | 2018-11-20 | 郑州云海信息技术有限公司 | A kind of server pools product power on/off system and method |
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