CN203931463U - A kind of EDP interface turns LVDS interface card - Google Patents
A kind of EDP interface turns LVDS interface card Download PDFInfo
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- CN203931463U CN203931463U CN201420370436.5U CN201420370436U CN203931463U CN 203931463 U CN203931463 U CN 203931463U CN 201420370436 U CN201420370436 U CN 201420370436U CN 203931463 U CN203931463 U CN 203931463U
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- edp
- lvds
- circuit board
- conversion chip
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Abstract
The utility model provides a kind of EDP interface to turn LVDS interface card, its structure comprises PCB circuit board, on this PCB circuit board, be provided with the interface conversion chip that EDP signal can be converted to LVDS signal, described interface conversion chip wiring is connected with and connects the EDP connector of EDP interface, the LVDS connector of connection LVDS interface, and above-mentioned interface conversion chip also connects up and is connected with GPIO interface, BOOTROM chip, crystal oscillator.Compared to the prior art this one EDP interface turns LVDS interface card, have reasonable in design, be skillfully constructed, the feature such as easy to use, applied widely, both can be applicable in the research and development program element of notebook computer, also applicable to the computer equipment with EDP interface, the convenient product development cycle that shortens, practical.
Description
Technical field
The utility model relates to technical field of electronic equipment, and a kind of practical, widely applicable, EDP interface turns LVDS interface card specifically.
Background technology
Along with chip upgrade is regenerated, the interface of various chips is also constantly being replaced by new technology.At present, after the CPU technology upgrading of INTEL, the 4th generation CPU has not had LVDS interface, and LVDS interface is replaced by EDP interface just gradually.LVDS, i.e. Low Voltage Differential Signaling, is a kind of technology of Low Voltage Differential Signaling interface.A kind of digital signal transmission mode that the shortcomings such as NS company of the Ta Shi U.S. (National Semiconductor) power consumption when overcoming with Transistor-Transistor Logic level mode transmission broadband high code rate data is large, EMI electromagnetic interference (EMI) is large are developed.EDP interface is embedded digital audio video transmission interface, this interface provides overall height image quality (1,920 × 1,080) and 3D Presentation Function, and EDP interface is because transfer rate is fast, is more suitable for resolution panels, adds and can reduce connecting line number, also contributing to the design of finished product thin type, is the primary option interface of following liquid crystal display design.But liquid crystal display or the LVDS interface of main flow at present, so just needs the switching between a kind of EDP interface and LVDS LCD Interface.Based on this, now provide a kind of EDP interface to turn LVDS interface card, this interface card can be supported the mutual conversion of these two kinds of interfaces, realizes highly expansion.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, provide a kind of practical, reliability is high, EDP interface turns LVDS interface card.
The technical solution of the utility model realizes in the following manner, a kind of EDP interface turns LVDS interface card, its structure comprises PCB circuit board, on this PCB circuit board, be provided with the interface conversion chip that EDP signal can be converted to LVDS signal, described interface conversion chip wiring is connected with and connects the EDP connector of EDP interface, the LVDS connector of connection LVDS interface, and above-mentioned interface conversion chip also connects up and is connected with GPIO interface, BOOT rom chip, crystal oscillator.
By the setting of said structure, make EDP signal can perfectly convert LVDS signal to, realize the smooth conversion of level; Be provided with in addition BOOT rom chip, realize writing with a brush dipped in Chinese ink and storing of mailing address; Be provided with crystal oscillator, clock signal is provided; Practical, extended capability is strong, is applicable to the connection of existing CPU and liquid crystal display, completes the data transmission between LVDS liquid crystal display and main frame EDP interface.
EDP connector, LVDS connector are connecting interface in addition, and this connecting interface is designed to be plugged on the shape in EDP interface, LVDS interface, and then facilitate the use of whole interface card.
As preferably, described PCB circuit board is provided with four layers, wherein outermost two-layer be signals layer, middle two-layer be bus plane and stratum.The design of this structure has ensured the convenience of cabling and has reduced number of vias, has ensured Electro Magnetic Compatibility, the separation on bus plane, stratum, and layout has taken into full account size and the position of PCB circuit board, has ensured that the device layout of circuit board is reasonable.
As preferably, built-in two kinds of input voltage: the 3.3V of described bus plane and 5V, the built-in two kinds of ground networks in stratum: digitally GND and in analog AGND.The setup and use LAYOUT wiring completion rate on the bus plane of this structure and stratum, cuts apart bus plane and stratum, thereby reduces that signal disturbs and to heavy current circuit overstriking.
The beneficial effect that the utility model compared with prior art produced is:
A kind of EDP interface of the present utility model turn LVDS interface card have simple in structure, easy to use, the feature such as be skillfully constructed, applied widely, both can be applicable in the research and development program element of notebook computer, also applicable to the computer equipment with EDP interface, the convenient product development cycle that shortens; Conveniently do not have the mainboard of LVDS interface to be connected with the liquid crystal display of LVDS interface by EDP interface, practical; Reliability is high, is easy to expansion, is easy to promote.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is PCB board structure of circuit cut-open views of the present utility model.
Mark in accompanying drawing represents respectively:
1, EDP interface, 2, EDP connector, 3, crystal oscillator, 4, interface conversion chip, 5, LVDS connector, 6, LVDS interface, 7, BOOT rom chip, 8, GPIO interface, 9, PCB circuit board, 9.1, signals layer, 9.2, bus plane, 9.3, stratum.
Embodiment
Below in conjunction with accompanying drawing, a kind of EDP interface of the present utility model being turned to LVDS interface card is described in detail below.
Now provide a kind of EDP interface to turn LVDS interface card, the implementation procedure of this interface card is: EDP interface is realized LVDS function by interface chip, thereby does not conveniently have the mainboard of LVDS interface to be connected with the liquid crystal display of LVDS interface by EDP interface.Based on this mentality of designing, as shown in Figure 1, the structure of this card comprises PCB circuit board 9, on this PCB circuit board 9, be provided with the interface conversion chip 4 that EDP signal can be converted to LVDS signal, described interface conversion chip 4 wirings are connected with and connect the EDP connector 2 of EDP interface 1, the LVDS connector 5 of connection LVDS interface 6, the LVDS interface 6 is here arranged on liquid crystal display, and above-mentioned interface conversion chip 4 also connects up and is connected with GPIO interface 8, BOOT rom chip 7, crystal oscillator 3.
Described PCB circuit board 9 is provided with four layers, wherein outermost two-layer be signals layer 9.1, middle two-layer be bus plane 9.2 and stratum 9.3.
As shown in Figure 2, built-in two kinds of input voltage: the 3.3V of described bus plane 9.2 and 5V, the built-in two kinds of ground networks in stratum 9.3: digitally GND and in analog AGND.
The utility model is applicable to there is no LVDS interface 6 and the computer that need to connect LVDS liquid crystal display.
Embodiment:
Interface conversion chip 4 is responsible for EDP protocol conversion to become LVDS bus protocol signal, selects the chip CH7511B of Chrontel company to realize at this; BOOT rom chip 7 is responsible for the storage of mailing address.In the time that practical wiring designs, take into full account rational deployment components and parts, by isometric LVDS differential signal line, ensure impedance matching, and note separating of crystal oscillator 3 clock signals and other signals, therefore PCB circuit board 9 is designed to four laminates, reduce signal disturb and to heavy current circuit overstriking, whole like this transfer process participates in without any program, only relies on hardware to realize.
Like this, the utility model has just solved the problem of interface conversion, the problem of writing with a brush dipped in Chinese ink of level conversion and transport address, thus conveniently do not have the mainboard of LVDS interface 6 to be connected with the liquid crystal display of LVDS interface 6 by EDP interface 1.
Except the technical characterictic described in instructions, be the known technology of those skilled in the art.
Claims (3)
1. an EDP interface turns LVDS interface card, it is characterized in that: its structure comprises PCB circuit board, on this PCB circuit board, be provided with the interface conversion chip that EDP signal can be converted to LVDS signal, described interface conversion chip wiring is connected with and connects the EDP connector of EDP interface, the LVDS connector of connection LVDS interface, and above-mentioned interface conversion chip also connects up and is connected with GPIO interface, BOOT rom chip, crystal oscillator.
2. a kind of EDP interface according to claim 1 turns LVDS interface card, it is characterized in that: described PCB circuit board is provided with four layers, wherein outermost two-layer be signals layer, middle two-layer be bus plane and stratum.
3. a kind of EDP interface according to claim 2 turns LVDS interface card, it is characterized in that: built-in two kinds of input voltage: the 3.3V of described bus plane and 5V, the built-in two kinds of ground networks in stratum: digitally GND and in analog AGND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370436.5U CN203931463U (en) | 2014-07-07 | 2014-07-07 | A kind of EDP interface turns LVDS interface card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370436.5U CN203931463U (en) | 2014-07-07 | 2014-07-07 | A kind of EDP interface turns LVDS interface card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931463U true CN203931463U (en) | 2014-11-05 |
Family
ID=51827238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420370436.5U Expired - Fee Related CN203931463U (en) | 2014-07-07 | 2014-07-07 | A kind of EDP interface turns LVDS interface card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931463U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812702A (en) * | 2016-03-17 | 2016-07-27 | 武汉精测电子技术股份有限公司 | Device and method for converting DP (Display Port) image signals into LVDS (Low-Voltage Differential Signaling) image signals |
| CN106129750A (en) * | 2016-08-26 | 2016-11-16 | 孟玲 | A kind of LED display data line connector |
| CN110225267A (en) * | 2019-06-06 | 2019-09-10 | 深圳市智微智能科技开发有限公司 | A kind of circuit and method for supporting mainboard EDP and LVDS doubleway output |
-
2014
- 2014-07-07 CN CN201420370436.5U patent/CN203931463U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812702A (en) * | 2016-03-17 | 2016-07-27 | 武汉精测电子技术股份有限公司 | Device and method for converting DP (Display Port) image signals into LVDS (Low-Voltage Differential Signaling) image signals |
| CN105812702B (en) * | 2016-03-17 | 2018-11-27 | 武汉精测电子集团股份有限公司 | A kind of DP picture signal is converted into the device and method of LVDS picture signal |
| CN106129750A (en) * | 2016-08-26 | 2016-11-16 | 孟玲 | A kind of LED display data line connector |
| CN110225267A (en) * | 2019-06-06 | 2019-09-10 | 深圳市智微智能科技开发有限公司 | A kind of circuit and method for supporting mainboard EDP and LVDS doubleway output |
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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 |
Granted publication date: 20141105 Termination date: 20150707 |
|
| EXPY | Termination of patent right or utility model |