CN204697180U - Chip main board and television set - Google Patents
Chip main board and television set Download PDFInfo
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- CN204697180U CN204697180U CN201520065667.XU CN201520065667U CN204697180U CN 204697180 U CN204697180 U CN 204697180U CN 201520065667 U CN201520065667 U CN 201520065667U CN 204697180 U CN204697180 U CN 204697180U
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Abstract
The utility model discloses a kind of chip main board and television set, this chip main board comprises USB port and the internal debugging interface of multiplexing external debug port, described USB port is provided with the first USB interface for debugging described chip main board place complete machine, described first USB interface is connected with described internal debugging interface, described chip main board also comprises secondary USB interface, and described secondary USB interface is also connected with described first USB interface.The utility model is by being connected to realize USB interface USB port as the external debug port of complete machine with complete machine internal debugging interface, to realize carrying out software debugging to complete machine problem, and when debugging, this USB port still may be used for the reading of USB device content.Meanwhile, due to the generally use of current USB port, so use, the method is used for carrying out software debugging highly versatile to complete machine, standardization level is high, is convenient to the unified debugging of multiclass television set.
Description
Technical field
The utility model relates to technical field of television sets, particularly relates to a kind of chip main board and television set.
Background technology
Along with different client is to the customization of television set, create different port requirements, and the problem produced of these different ports of television set gets more and more, thus need a universal port to be used for carrying out field adjustable to the problems of all kinds of television set, utilized the VGA port of television set as debug port more in the past, the modern universal demand of LED Digital Television to VGA port reduces gradually, VGA port can be removed during television set port design, cannot debug after causing final assembly, and the connection wire that debugging at present uses is not general.
Utility model content
Main purpose of the present utility model is to provide a kind of chip main board and the television set that can realize external debugging interface that carry out software debugging to television set complete machine problem, that have highly versatile.
For achieving the above object, the utility model proposes a kind of multiplexing chip main board for USB port, comprise USB port and the internal debugging interface of multiplexing external debug port, described USB port is provided with the first USB interface for debugging described chip main board place complete machine, and described first USB interface is connected with described internal debugging interface.
Preferably, described chip main board also comprises secondary USB interface, and described first USB interface is also connected with described secondary USB interface.
Preferably, described first USB interface comprises VBUS pin, GND pin, RX pin, TX pin, described internal debugging interface comprises UART_RX pin and UART_TX pin, described VBUS pin connects power supply, described GND pin ground connection, described RX pin is connected to described UART_RX pin, and described TX pin is connected to described UART_TX pin.
Preferably, described secondary USB interface comprises USB_D+ pin and USB_D-pin, described first USB interface comprises VBUS pin, GND pin, RX pin, TX pin, D+ pin, D-pin, described internal debugging interface comprises UART_RX pin and UART_TX pin, described VBUS pin connects power supply, described GND pin ground connection, described RX pin is connected to described UART_RX pin, described TX pin is connected to described UART_TX pin, described D+ pin is connected to described USB_D+ pin, and described D-pin is connected to described USB_D-pin.
Preferably, described chip main board also comprises stand-by power supply, resistance R3, R4 and pull-up resistor R5, R6, described RX pin is connected to described UART_RX pin by described resistance R3, described TX pin is connected to described UART_TX pin by described resistance R4, described UART_RX pin is connected to described stand-by power supply near one end of described resistance R3 by described pull-up resistor R6, and described UART_TX pin is connected to described stand-by power supply near one end of described resistance R4 by described pull-up resistor R5.
Preferably, described chip main board also comprises resistance R1, R2, and described D+ pin is connected serially to described USB_D+ pin by described resistance R1, and described D-pin is connected serially to described USB_D-pin by described resistance R2.
Preferably, the resistance of described R1, R2 is 5.1 Ω, and the resistance of described R3, R4 is 68 Ω, and the resistance of described R5, R6 is 4.7K Ω.
Preferably, described chip main board also comprises ESD device D1, D2, D3, D4, described TX pin place connects described D1 device and ground connection, described RX pin place connects described D1 device and ground connection, described D-pin place connects described D1 device and ground connection, and described D+ pin place connects described D1 device and ground connection.
The utility model also proposes a kind of television set, comprises chip main board as above.
The utility model is by arranging USB multiplex interface in the USB port of television set complete machine, this USB interface is connected realize the external debug port of USB port as television set with internal debugging interface, for the software debugging of television set complete machine problem, and when debugging, this USB port still may be used for the reading of USB device content.Simultaneously, due to the generally use of current USB port, the method is used to carry out software debugging highly versatile to television set, and USB port and connection wire standardization level high, be convenient to the unified debugging of multiclass television set, thus solve the problem that prior art cannot be debugged television set by universal port.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the utility model chip main board preferred embodiment;
Fig. 2 is the function use figure of USB port as debug port of the utility model chip main board.
In order to make the technical solution of the utility model clearly, understand, be described in further detail below in conjunction with accompanying drawing.
Embodiment
As shown in Figure 1, for the circuit diagram of the preferred embodiment of the utility model chip main board (hereinafter referred to as main IC), this chip main board can be applied to the display devices such as television set, the present embodiment is illustrated with television set, this chip main board comprises USB port 12, the stand-by power supply of internal debugging interface 13 and 5V, resistance is the resistance R1 of 5.1 Ω, R2, resistance is the resistance R3 of 68 Ω, R4, resistance is the pull-up resistor R5 of 4.7K Ω, R6 and for providing the ESD device D1 of electrostatic protection, D2, D3, D4, the resistance of above-mentioned each resistance can set according to actual conditions, wherein:
USB port comprises the first usb 11, first usb 11 and is connected with described internal debugging interface 13, for debugging deck mainboard place complete machine; First usb 11 is also connected with secondary USB interface 12, for realizing the generic USB port function of television set, connects USB device.
Described first usb 11 comprises VBUS pin, GND pin, RX pin, TX pin, D+ pin, D-pin, described secondary USB interface 12 comprises USB_D+ pin and USB_D-pin, and described internal debugging interface 13 comprises UART_RX pin and UART_TX pin.
Described VBUS pin connects power supply, described GND pin ground connection.
According to main IC serial ports pull-up power supply requirement and protection, described RX pin is connected to described UART_RX pin by the resistance R3 that described resistance is 68 Ω, described TX pin is connected to described UART_TX pin by the resistance R4 that described resistance is 68 Ω, described UART_RX pin is connected to described stand-by power supply near one end of described resistance R3 by the pull-up resistor R6 that described resistance is 4.7K Ω, described UART_TX pin is connected to described stand-by power supply near one end of described resistance R4 by the pull-up resistor R5 that described resistance is 4.7K Ω, realize the USB port of television set thus as external Universal debugging port.
According to main IC characteristic and line impedance coupling, described D+ pin is connected serially to described USB_D+ pin by the resistance R1 that described resistance is 5.1 Ω, described D-pin is connected serially to described USB_D-pin by the resistance R2 that described resistance is 5.1 Ω, realizes the USB port of television set thus as common USB interface.
Above-mentioned pin RX, described pin TX, described D+ pin, described D-pin reserve the link position of other devices near described first USB interface place; specifically can connect described D1 device and ground connection at described TX pin place; described RX pin place connects described D1 device and ground connection; described D-pin place connects described D1 device and ground connection; described D+ pin place connects described D1 device and ground connection, for circuit provides electrostatic protection.
As shown in Figure 2, for the USB port of chip main board is schemed as the function use of debug port.
When needs carry out software debugging to complete machine, with a USB connecting line 24, the USB port 26 of complete machine 21 is turned serial port module 22 with the USB with USB port 27 to be connected, with an other USB connecting line 25, the USB port 28 of interconnecting module 22 is connected with the PC 23 with USB port 29, uses PC to hold software to debug complete machine 21.
Built-in debug interface on complete machine mainboard is connected to RX pin and the TX pin of the first USB interface by this specific embodiment, thus using the USB port 26 of complete machine as an external Universal debugging port, to carry out software debugging to complete machine problem.The D+ pin of the first USB interface and D-pin are connected to respectively USB_D+ pin and the USB_D-pin of secondary USB interface, therefore when debugging, this complete machine USB port 26 still can support the normal input and output for USB device simultaneously.
In addition, the utility model also proposes a kind of television set, comprises chip main board as above, and the structure of this chip main board and principle, please refer to above-described embodiment, do not repeat them here.
The chip main board that the utility model proposes and television set, the USB interface realizing television set not only can read USB device content but also can be used for complete machine software debugging, multiplexing functions; Further, under the prerequisite of the general multiple USB interface of modern LED television, the Commissioning Analysis to this access issues is not affected; At present, USB interface and connection wire standardization level high, be convenient to the unified debugging of multiclass machine product, solve the problem that prior art cannot be debugged television set by general-purpose interface.
It should be noted that, the scheme of the utility model embodiment is not only applicable to television set, can also be applicable to the debugging of the electronic equipments such as similar television set (such as other displays), not repeat them here.
In addition, when equipment does not need the digital independent carrying out USB device, chip main board of the present utility model can not comprise secondary USB interface, only described first USB interface is connected with internal debugging interface, to realize described USB port only to use as external debug port.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. a chip main board, comprise USB port and the internal debugging interface of multiplexing external debug port, it is characterized in that, described USB port is provided with the first USB interface for debugging described chip main board place complete machine, and described first USB interface is connected with described internal debugging interface.
2. chip main board according to claim 1, is characterized in that, also comprises secondary USB interface, and described first USB interface is also connected with described secondary USB interface.
3. chip main board according to claim 1, it is characterized in that, described first USB interface comprises VBUS pin, GND pin, RX pin, TX pin, described internal debugging interface comprises UART_RX pin and UART_TX pin, described VBUS pin connects power supply, described GND pin ground connection, described RX pin is connected to described UART_RX pin, and described TX pin is connected to described UART_TX pin.
4. chip main board according to claim 2, it is characterized in that, described secondary USB interface comprises USB_D+ pin and USB_D-pin, described first USB interface comprises VBUS pin, GND pin, RX pin, TX pin, D+ pin, D-pin, described internal debugging interface comprises UART_RX pin and UART_TX pin, described VBUS pin connects power supply, described GND pin ground connection, described RX pin is connected to described UART_RX pin, described TX pin is connected to described UART_TX pin, described D+ pin is connected to described USB_D+ pin, described D-pin is connected to described USB_D-pin.
5. chip main board according to claim 4, it is characterized in that, also comprise stand-by power supply, resistance R3, R4 and pull-up resistor R5, R6, described RX pin is connected to described UART_RX pin by described resistance R3, described TX pin is connected to described UART_TX pin by described resistance R4, described UART_RX pin is connected to described stand-by power supply near one end of described resistance R3 by described pull-up resistor R6, and described UART_TX pin is connected to described stand-by power supply near one end of described resistance R4 by described pull-up resistor R5.
6. chip main board according to claim 5, is characterized in that, also comprises resistance R1, R2, and described D+ pin is connected serially to described USB_D+ pin by described resistance R1, and described D-pin is connected serially to described USB_D-pin by described resistance R2.
7. chip main board according to claim 6, it is characterized in that, also comprise ESD device D1, D2, D3, D4, described TX pin place connects described D1 device and ground connection, described RX pin place connects described D1 device and ground connection, described D-pin place connects described D1 device and ground connection, and described D+ pin place connects described D1 device and ground connection.
8. chip main board according to claim 6, is characterized in that, the resistance of described R3, R4 is 68 Ω, and the resistance of described R5, R6 is 4.7K Ω; The resistance of described R1, R2 is 5.1 Ω.
9. a television set, is characterized in that, comprises the chip main board according to any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520065667.XU CN204697180U (en) | 2015-01-29 | 2015-01-29 | Chip main board and television set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520065667.XU CN204697180U (en) | 2015-01-29 | 2015-01-29 | Chip main board and television set |
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| CN204697180U true CN204697180U (en) | 2015-10-07 |
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| CN201520065667.XU Active CN204697180U (en) | 2015-01-29 | 2015-01-29 | Chip main board and television set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491422A (en) * | 2015-12-29 | 2016-04-13 | 康佳集团股份有限公司 | Type-C interface and television set |
| CN106445762A (en) * | 2016-08-29 | 2017-02-22 | 广州视源电子科技股份有限公司 | Complete equipment debugging method and system |
-
2015
- 2015-01-29 CN CN201520065667.XU patent/CN204697180U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491422A (en) * | 2015-12-29 | 2016-04-13 | 康佳集团股份有限公司 | Type-C interface and television set |
| CN106445762A (en) * | 2016-08-29 | 2017-02-22 | 广州视源电子科技股份有限公司 | Complete equipment debugging method and system |
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