CN202677385U - Interface circuit for application upgrade - Google Patents
Interface circuit for application upgrade Download PDFInfo
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- CN202677385U CN202677385U CN 201220305788 CN201220305788U CN202677385U CN 202677385 U CN202677385 U CN 202677385U CN 201220305788 CN201220305788 CN 201220305788 CN 201220305788 U CN201220305788 U CN 201220305788U CN 202677385 U CN202677385 U CN 202677385U
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- usb
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- control chip
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Abstract
The utility model discloses an interface circuit for application upgrade. The interface circuit comprises a universal serial bus (USB) management control chip, a USB interface and a serial peripheral interface (SPI), wherein a positive data end of the USB interface is connected with a positive data end of the USB management control chip; a negative data end of the USB interface is connected with a negative data end of the USB management control chip; a serial data input end of the USB management control chip is connected with a data input end of the SPI; and a serial data output end of the USB management control chip is connected with a data output end of the SPI. The interface circuit is matched with a USB flash disk, so that application upgrade of a chip on a circuit board is realized; and moreover, the interface circuit is simple in structure, convenient to carry and suitable for the site in a complex environment.
Description
Technical field
The utility model relates to the interface circuit technical field, relates in particular to a kind of interface circuit for program upgrade.
Background technology
In the used control rack of Rapier Loom Control System, placing the circuit board of difference in functionality, perfect along with the raising of technology and customer demand, usually need to safeguard the program of circuit chip on board, upgrading and perfect, carry out data importing, data derivation etc. according to client's demand.The general hardware such as programmable device, PC that adopt of chip program upgrading realize that these hardware relatively take up space on traditional circuit board, have inconvenience at the scene of circumstance complication.
China Patent Publication No. CN2854959Y, open day on January 3rd, 2007, the name of utility model is called software upgrading circuit module, this application case discloses a kind of software upgrading circuit module, it comprises a serial ports, one bus hub and a level shifting circuit, the data sending terminal of described serial ports connects the transmitted signal input end of described level shifting circuit respectively and receives signal output part with data receiver, the transmitted signal output terminal of described level shifting circuit and the signal end that is connected signal input part and then connects respectively described bus hub, and then being connected of realization and TV set central layer.Its weak point is, this software upgrading circuit module need to cooperate the software upgrading of finishing the TV set central layer with computing machine, and computing machine takes up room larger, has inconvenience at the scene of circumstance complication.
The utility model content
The purpose of this utility model is to overcome on traditional circuit board the chip program upgrading to adopt the hardware such as programmable device, PC to realize, these hardware relatively take up space, the technical matters that has inconvenience at the scene of circumstance complication, a kind of interface circuit for program upgrade is provided, it cooperates the program upgrade of realizing the circuit chip on board with USB flash disk, simple in structure, easy to carry, use at the scene that is adapted at circumstance complication.
In order to address the above problem, the utility model is achieved by the following technical solutions:
A kind of interface circuit for program upgrade of the present utility model, comprise USB management control chip, USB interface and SPI interface, the forward data end of described USB interface links to each other with the forward data end of USB management control chip, the negative sense data terminal of described USB interface links to each other with the negative sense data terminal of USB management control chip, the serial data input end of described USB management control chip links to each other with the data input pin of SPI interface, and the serial data output terminal of described USB management control chip links to each other with the data output end of SPI interface.
In the technical program, when the program that the circuit chip on board is arranged need to be upgraded, interface circuit is accessed circuit board to be upgraded by the SPI interface, the serial data input end of USB management control chip is linked to each other with the data sending terminal of chip to be upgraded, the serial data output terminal of USB management control chip links to each other with the data receiver of chip to be upgraded, and the USB flash disk that will have ROMPaq inserts USB interface.
After inserting USB flash disk, the program in the chip to be upgraded detects the file in the USB flash disk automatically, has determined whether ROMPaq by the binary file key word in the identification USB flash disk.If ROMPaq is arranged, chip to be upgraded reads the ROMPaq in the USB flash disk, and it is write on the sheet among the FLASH, to replace original working procedure, finishes the auto-update of program.
As preferably, described a kind of interface circuit for program upgrade also comprises Transient Voltage Suppressor, and the two ends of described Transient Voltage Suppressor link to each other with the negative sense data terminal with the forward data end of USB interface respectively.Transient Voltage Suppressor prevents from from the glitch of the exterior static of USB interface access or voltage, electric current whole circuit being caused damage.
As preferably, described a kind of interface circuit for program upgrade also comprises electric capacity, and the power end of described SPI interface links to each other with the power end of USB management control chip, power end and electric capacity one end of USB interface, and the electric capacity other end links to each other with ground wire.After the SPI interface accessed circuit board to be upgraded, the power end of SPI interface linked to each other with the power supply of circuit board to be upgraded, and the power supply of circuit board to be upgraded is the interface circuit power supply, and electric capacity strobes.
As preferably, described a kind of interface circuit for program upgrade also comprises electric capacity, the power end of described SPI interface links to each other with the power end of USB management control chip, the power end of USB interface, power end and electric capacity one end of Transient Voltage Suppressor, and the electric capacity other end links to each other with ground wire.After the SPI interface accessed circuit board to be upgraded, the power end of SPI interface linked to each other with the power supply of circuit board to be upgraded, and the power supply of circuit board to be upgraded is the interface circuit power supply, and electric capacity strobes.
As preferably, described a kind of interface circuit for program upgrade also comprises light emitting diode, and described light emitting diode links to each other with USB management control chip.Light emitting diode is lighted, and the expression USB flash disk inserts USB interface; Light emitting diode extinguishes, and the expression USB flash disk does not insert USB interface.
The beneficial effects of the utility model are: (1) cooperates the program upgrade of realizing the circuit chip on board with USB flash disk, simple in structure, easy to carry, and use at the scene that is adapted at circumstance complication.(2) interface circuit independently arranges, and is not arranged on the circuit board to be upgraded, saves the space for circuit board to be upgraded, saves cost.
Description of drawings
Fig. 1 is that a kind of circuit theory of the present utility model connects block diagram.
Among the figure: 1, USB management control chip, 2, USB interface, 3, the SPI interface, 4, Transient Voltage Suppressor, 5, electric capacity, 6, light emitting diode.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of interface circuit for program upgrade of present embodiment, as shown in Figure 1, comprise USB management control chip 1, USB interface 2, SPI interface 3, Transient Voltage Suppressor 4, electric capacity 5, light emitting diode 6, the forward data end of USB interface 2 links to each other with the forward data end of USB management control chip 1, the negative sense data terminal of USB interface 2 links to each other with the negative sense data terminal of USB management control chip 1, the serial data input end of USB management control chip 1 links to each other with the data input pin of SPI interface 3, the serial data output terminal of USB management control chip 1 links to each other with the data output end of SPI interface 3, and the two ends of transient voltage inhibition 4 link to each other with the negative sense data terminal with the forward data end of USB interface 2 respectively.The power end of SPI interface 3 links to each other with the power end of USB management control chip 1, the power end of USB interface 2, power end and electric capacity 5 one ends of Transient Voltage Suppressor 4, electric capacity 5 other ends link to each other with ground wire, light emitting diode 6 links to each other with the output terminal of USB management control chip 1, and USB management control chip 1 is the CH376S chip.
The mutual conversion that USB management control chip 1 is used between usb signal and the rs 232 serial interface signal.Transient Voltage Suppressor 4 prevents from from the glitch of the exterior static of USB interface 2 access or voltage, electric current whole circuit being caused damage.Light emitting diode 6 is lighted, and the expression USB flash disk inserts USB interface 2; Light emitting diode 6 extinguishes, and the expression USB flash disk does not insert USB interface 2.
When the program that the circuit chip on board is arranged need to be upgraded, interface circuit is accessed circuit board to be upgraded by SPI interface 3, the data input pin of SPI interface 3 links to each other with the data sending terminal of chip to be upgraded, the data output end of SPI interface 3 links to each other with the data receiver of chip to be upgraded, the power end of SPI interface 3 links to each other with the power supply of circuit board to be upgraded, the power supply of circuit board to be upgraded is the interface circuit power supply, and electric capacity 5 strobes.The USB flash disk that will have ROMPaq inserts USB interface 2.
After inserting USB flash disk, the program in the chip to be upgraded detects the file in the USB flash disk automatically, has determined whether ROMPaq by the binary file key word in the identification USB flash disk.If ROMPaq is arranged, chip to be upgraded reads the ROMPaq in the USB flash disk, and it is write on the sheet among the FLASH, to replace original working procedure, finishes the auto-update of program.
Claims (5)
1. interface circuit that is used for program upgrade, it is characterized in that: comprise USB management control chip (1), USB interface (2) and SPI interface (3), the forward data end of described USB interface (2) links to each other with the forward data end of USB management control chip (1), the negative sense data terminal of described USB interface (2) links to each other with the negative sense data terminal of USB management control chip (1), the serial data input end of described USB management control chip (1) links to each other with the data input pin of SPI interface (3), and the serial data output terminal of described USB management control chip (1) links to each other with the data output end of SPI interface (3).
2. a kind of interface circuit for program upgrade according to claim 1, it is characterized in that: also comprise Transient Voltage Suppressor (4), the two ends of described Transient Voltage Suppressor (4) link to each other with the negative sense data terminal with the forward data end of USB interface (2) respectively.
3. a kind of interface circuit for program upgrade according to claim 1, it is characterized in that: also comprise electric capacity (5), the power end of described SPI interface (3) links to each other with the power end of USB management control chip (1), power end and electric capacity (5) one ends of USB interface (2), and electric capacity (5) other end links to each other with ground wire.
4. a kind of interface circuit for program upgrade according to claim 2, it is characterized in that: also comprise electric capacity (5), the power end of described SPI interface (3) links to each other with the power end of USB management control chip (1), the power end of USB interface (2), power end and electric capacity (5) one ends of Transient Voltage Suppressor (4), and electric capacity (5) other end links to each other with ground wire.
5. according to claim 1 and 2 or 3 or 4 described a kind of interface circuits for program upgrade, it is characterized in that: also comprise light emitting diode (6), described light emitting diode (6) links to each other with USB management control chip (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220305788 CN202677385U (en) | 2012-06-28 | 2012-06-28 | Interface circuit for application upgrade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220305788 CN202677385U (en) | 2012-06-28 | 2012-06-28 | Interface circuit for application upgrade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202677385U true CN202677385U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220305788 Expired - Fee Related CN202677385U (en) | 2012-06-28 | 2012-06-28 | Interface circuit for application upgrade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202677385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106789379A (en) * | 2017-03-29 | 2017-05-31 | 联想(北京)有限公司 | Update method and server cabinet |
-
2012
- 2012-06-28 CN CN 201220305788 patent/CN202677385U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106789379A (en) * | 2017-03-29 | 2017-05-31 | 联想(北京)有限公司 | Update method and server cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20210628 |