CN204760040U - Serial ports burns record ware - Google Patents
Serial ports burns record ware Download PDFInfo
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- CN204760040U CN204760040U CN201520562535.8U CN201520562535U CN204760040U CN 204760040 U CN204760040 U CN 204760040U CN 201520562535 U CN201520562535 U CN 201520562535U CN 204760040 U CN204760040 U CN 204760040U
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Abstract
The utility model relates to a serial ports burns record ware, including be used for connecting the external data source and wait to burn the record chip interface module, with the port that interface module connects switches module and converting circuit and is the current -limiting supply circuit that above -mentioned module provided specific operating current, converting circuit including the conversion chip module and with phase inverter and buffer that conversion chip module connects, conversion chip mould is connected to through the buffer the port switches the module, and passes through reverse ware is connected to interface module. The utility model discloses a serial ports burns record ware realizes burning the record with single firing record ware to polytype fever record chip of treating through converting circuit and port switching module, and low in manufacturing cost can reduce research and development cost, improves research and development efficiency.
Description
Technical field
The utility model relates to vehicle mounted multimedia research and development field, particularly a kind of serial ports cd-rom recorder.
Background technology
Along with the development of vehicle-mounted multimedia equipment, vehicle-mounted multimedia equipment is more and more intelligent, a lot of equipment all needs to use MCU process, be no matter the auto-loading development phase or after fill the development phase, the debugging of system is often related to the burning of MCU, the recording device in existing technology due to cost high, design is complicated, the negligible amounts that usual research and development department is equipped with, and its maintenance cost is higher, greatly constrains efficiency of research and development.In addition, the compatibility of existing recording device is poor, usual a kind of recording device can only carry out burning to the MCU of a series or even a kind of model, and often need the recording device that multiple stage is corresponding when being designed into multiple different model MCU in R&D process, this also increases R&D costs.
Summary of the invention
The purpose of this utility model is the defect in order to overcome above-mentioned background technology, provides a kind of serial ports cd-rom recorder.
A kind of serial ports cd-rom recorder, comprises for connecting external data source and treating the interface module of burning/recording chip, the port handover module be connected with described interface module and change-over circuit and provide the current limliting feed circuit of particular job electric current for above-mentioned module; Described change-over circuit comprise conversion chip module and with the phase inverter of described conversion chip model calling and impact damper, described conversion chip mould is connected to described port handover module by impact damper, and is connected to interface module by described reverser.
Further, described interface module comprises USB interface and has the serial ports of receiving end, transmitting terminal, reset terminal, burning flag terminal and power end.
Further, described conversion chip module comprises the positive I/O pin and negative I/O pin, the transmission pin being connected to described impact damper and reception pin that are connected to described USB interface, and is connected to the reset pin of described port handover module by described phase inverter; Described impact damper comprises the first triple gate and the second triple gate, described first triple gate input end grounding, and tri-state allows end to connect described transmission pin, and output terminal connects described port handover module; Described second triple gate input end connects described end ground connection, and tri-state allows end to connect described port handover module, and output terminal connects described reception pin; Described first triple gate is all connected power supply by a pull-up resistor with the output terminal of the second triple gate.
Further, described port handover module comprises and has the first double-point double-throw switch input and output pin switch; Two output terminal pin is connected respectively to described transmitting terminal and receiving end, during described first double-point double-throw switch the first state, two input end pin correspondences connect described input pin and output pin, and during the second state, two input end correspondences connect described output pin and input pin.
Further, described port handover module also comprises the burning with the second double-point double-throw switch and controls switch, and the first output terminal pin of described second double-point double-throw switch connects described burning flag terminal, and the second output terminal pin connects described reset terminal; When described port handover module is in the first state, its first input end pin connects power supply, and the second input end pin connects described reset pin; When described port handover module is in the second state, its first input end pin ground connection, the second input end pin connects power supply, simultaneously also by a normal off button ground connection.
Serial ports cd-rom recorder of the present utility model realizes same cd-rom recorder by change-over circuit and port handover module and treats that burning/recording chip carries out burning, low cost of manufacture to polytype, can reduce R&D costs, improves efficiency of research and development.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram in the utility model one embodiment.
Fig. 2 is the circuit theory diagrams in the utility model one embodiment.
Embodiment
Below in conjunction with accompanying drawing, a kind of serial ports cd-rom recorder of the present utility model is further described.
A kind of serial ports cd-rom recorder, as shown in Figure 1, comprises interface module 1, port handover module 2, change-over circuit 3 and current limliting feed circuit 4.Concrete, the USB programming signal that external piloting control system sends by change-over circuit 3 is converted to rs 232 serial interface signal, realize treating that burning/recording chip connects to multi-signal by port handover module 2 simultaneously, interface module 1 is communicated with external unit for realizing data simultaneously, current limliting feed circuit 4 are then for above-mentioned module provides particular job electric current, its inside comprises switching tube structure, when working current is excessive, switching tube ends, the power supply to exporting cd-rom recorder is stopped to export, prevent from burning out equipment, treat that working current is in normal value and recovers power supply output again.In preferred embodiment, external piloting control system can be PC computer.
In the present embodiment, interface module 1 comprises usb 11 and has the serial ports 12 of receiving end RXD2, transmitting terminal TXD2, reset terminal RESET, burning flag terminal FLASH and power end VCC.Serial ports preferably adopts 15 needle serial ports, and ensure expansibility, wherein in order to reduce volume, usb 11 can be MicroUSB interface.Under preferable case, current limliting feed circuit 4 can obtain power supply by USB interface, and then power for comprehensive cd-rom recorder.
Wherein, change-over circuit 3 comprises conversion chip module 31 and the phase inverter 32 that is connected with conversion chip module 31 and impact damper 33, and conversion chip mould is connected to port handover module 2 by impact damper 33, and is connected to interface module 1 by reverser.
Concrete, as shown in Figure 2, conversion chip module 31 comprises positive I/O pin D+ and negative I/O pin D-, sends pin TXD, receives pin RXD and reset pin RTS.Wherein positive I/O pin D+ and negative I/O pin D-is connected in USB interface, for external piloting control systems exchange information.Send pin TXD and receive pin RXD then in burning/recording chip process with treat that burning/recording chip transmits and receive data, it is connected to port handover module 2 by impact damper 33.Reset pin RTS then for resetting to cd-rom recorder state before burning, and it is also connected to port handover module 2 by phase inverter 32.
Impact damper 33 comprises the first triple gate 331 coordinating input pin and the second triple gate 332 coordinating output pin.
Wherein the first triple gate 331 input end grounding, tri-state allows end to connect and sends pin, output terminal connectivity port handover module, also connects power supply VCC by a pull-up resistor simultaneously.Because the input end of the first triple gate 331 is ground connection, first triple gate 331 output terminal then allows end change according to the tri-state of the first triple gate 331 and changes, when allowing end to export high level for these three, first triple gate 331 is high impedance status, output terminal does not export, but because output exists the pull-up resistor connecing power supply, be now equivalent to export high level; On the contrary, when allowing to hold output low level for these three, the first triple gate 331 is normal operating conditions, and now output terminal is identical with input end current potential, output low level.Be placed in the second triple gate 332, its input end link ground connection, tri-state allows end connectivity port handover module, and output terminal connects reception pin; First triple gate 331 is all connected power supply by a pull-up resistor with the output terminal of the second triple gate 332.Its principle of work is identical in the first triple gate 331, and when extraneous input high level, conversion chip module 31 obtains high level signal; During extraneous output low level, conversion chip module 31 obtains low level signal.This structure can make system obtain a stable signal.
In preferred situation, impact damper 33 can adopt the circuit module based on 74SZ125, and conversion chip module 31 also can adopt the circuit module based on CP2102, and phase inverter 32 adopts the circuit module based on 74SZ04.
In port handover module 2, it comprises input and output pin switch and burning controls switch.Wherein the effect of input and output pin switch input pin can be replaced mutually with output pin, and it is then switch the different reset modes needed for model that burning controls switch.
Wherein, in the present embodiment, input and output pin switch is the first double-point double-throw switch K1, and its output terminal pin K1_0 is connected to transmitting terminal, and output terminal pin K1_1 is then connected to receiving end.Meanwhile, the input end pin K1_01 that output terminal pin K1_0 is corresponding and input end pin K1_02 are connected the output terminal of the first triple gate 331 and the output terminal of the second triple gate 332 respectively.And input end pin K1_11 corresponding to output terminal pin K1_1 is connected the output terminal of the second triple gate 332 and the output terminal of the first triple gate 331 respectively with input end pin K1_12.When input and output pin switch is in the first state, output terminal pin K1_0 and output terminal pin K1_1 are connected input end pin K1_01 and input end pin K1_11 respectively; Input and output pin switch be in and state time, output terminal pin K1_0 and output terminal pin K1_1 are connected input end pin input end pin K1_02 and input end pin K1_12 respectively.
Burning controls switch and then comprises and have the second double-point double-throw switch K2.The first output terminal pin K2_0 of the second double-point double-throw switch K2 connects burning flag terminal, and the second output terminal pin K2_1 connects reset terminal.The input end pin K2_01 that output terminal pin K2_0 is corresponding is connected power supply VCC and ground connection respectively with input end pin K2_02.And input end pin K2_11 corresponding to output terminal pin K2_1 and input end pin K2_12 are connected reset pin and the normal off button of conversion chip module 31 respectively, input end pin K2_12 also connects power supply VCC by pull-up resistor simultaneously.When burning control switch is in the first state, output terminal pin K2_0 and output terminal pin K2_1 are connected input end pin K2_01 and input end pin K2_11 respectively; Burning control switch be in the and state time, output terminal pin K2_0 and output terminal pin K2_1 are connected input end pin input end pin K2_02 and input end pin K2_12 respectively.
When input and output pin switch and burning control switch be all in the first state time, port handover module 2 is in the first state, can carry out burning for a kind of burning/recording chip for the treatment of of type, such as but be not only limited to the chip of Renesas brand; When input and output pin switch and burning control switch be all in the second state time, port handover module 2 is in the second state, can carry out burning for the burning/recording chip for the treatment of of another kind of type, such as but be not only limited to the chip of Fujitsu brand.
By reference to the accompanying drawings embodiment of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.
Claims (5)
1. a serial ports cd-rom recorder, is characterized in that: comprise for connecting external data source and treating the interface module of burning/recording chip, the port handover module be connected with described interface module and change-over circuit and provide the current limliting feed circuit of particular job electric current for above-mentioned module; Described change-over circuit comprise conversion chip module and with the phase inverter of described conversion chip model calling and impact damper, described conversion chip mould is connected to described port handover module by impact damper, and is connected to interface module by described reverser.
2. serial ports cd-rom recorder as claimed in claim 1, is characterized in that: described interface module comprises USB interface and has the serial ports of receiving end, transmitting terminal, reset terminal, burning flag terminal and power end.
3. serial ports cd-rom recorder as claimed in claim 2, it is characterized in that: described conversion chip module comprises the positive I/O pin and negative I/O pin, the transmission pin being connected to described impact damper and reception pin that are connected to described USB interface, and is connected to the reset pin of described port handover module by described phase inverter; Described impact damper comprises the first triple gate and the second triple gate, described first triple gate input end grounding, and tri-state allows end to connect described transmission pin, and output terminal connects described port handover module; Described second triple gate input end connects described end ground connection, and tri-state allows end to connect described port handover module, and output terminal connects described reception pin; Described first triple gate is all connected power supply by a pull-up resistor with the output terminal of the second triple gate.
4. serial ports cd-rom recorder as claimed in claim 3, is characterized in that: described port handover module comprises and has the first double-point double-throw switch input and output pin switch; Two output terminal pin is connected respectively to described transmitting terminal and receiving end, during described first double-point double-throw switch the first state, two input end pin correspondences connect described input pin and output pin, and during the second state, two input end correspondences connect described output pin and input pin.
5. serial ports cd-rom recorder as claimed in claim 4, it is characterized in that: described port handover module also comprises the burning with the second double-point double-throw switch and controls switch, first output terminal pin of described second double-point double-throw switch connects described burning flag terminal, and the second output terminal pin connects described reset terminal; When described port handover module is in the first state, its first input end pin connects power supply, and the second input end pin connects described reset pin; When described port handover module is in the second state, its first input end pin ground connection, the second input end pin connects power supply, simultaneously also by a normal off button ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520562535.8U CN204760040U (en) | 2015-07-30 | 2015-07-30 | Serial ports burns record ware |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520562535.8U CN204760040U (en) | 2015-07-30 | 2015-07-30 | Serial ports burns record ware |
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| CN204760040U true CN204760040U (en) | 2015-11-11 |
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| CN201520562535.8U Expired - Fee Related CN204760040U (en) | 2015-07-30 | 2015-07-30 | Serial ports burns record ware |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678753A (en) * | 2017-06-15 | 2018-02-09 | 卡姆福（北京）能源服务有限公司 | A kind of program burn writing method, apparatus and electronic equipment |
| CN111090605A (en) * | 2019-10-10 | 2020-05-01 | 惠州市德赛西威汽车电子股份有限公司 | USB-UART (universal serial bus-to-universal asynchronous receiver transmitter) circuit for MCU (microprogrammed control unit) software upgrading |
| CN111857750A (en) * | 2020-07-09 | 2020-10-30 | 广芯微电子（广州）股份有限公司 | Multi-channel burner and multi-channel burning method |
| CN114895612A (en) * | 2022-07-11 | 2022-08-12 | 深圳市杰美康机电有限公司 | Simulation system and simulation control method for DSP chip |
-
2015
- 2015-07-30 CN CN201520562535.8U patent/CN204760040U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678753A (en) * | 2017-06-15 | 2018-02-09 | 卡姆福（北京）能源服务有限公司 | A kind of program burn writing method, apparatus and electronic equipment |
| CN111090605A (en) * | 2019-10-10 | 2020-05-01 | 惠州市德赛西威汽车电子股份有限公司 | USB-UART (universal serial bus-to-universal asynchronous receiver transmitter) circuit for MCU (microprogrammed control unit) software upgrading |
| CN111857750A (en) * | 2020-07-09 | 2020-10-30 | 广芯微电子（广州）股份有限公司 | Multi-channel burner and multi-channel burning method |
| CN114895612A (en) * | 2022-07-11 | 2022-08-12 | 深圳市杰美康机电有限公司 | Simulation system and simulation control method for DSP chip |
| CN114895612B (en) * | 2022-07-11 | 2022-09-27 | 深圳市杰美康机电有限公司 | Simulation system for DSP chip |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20210730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |