CN206379936U - Multi signal change-over circuit - Google Patents
Multi signal change-over circuit Download PDFInfo
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- CN206379936U CN206379936U CN201621424243.9U CN201621424243U CN206379936U CN 206379936 U CN206379936 U CN 206379936U CN 201621424243 U CN201621424243 U CN 201621424243U CN 206379936 U CN206379936 U CN 206379936U
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Abstract
The utility model provides a kind of multi signal change-over circuit, including：The MIPI interfaces of signal conversion unit are electrically connected with MIPI units, to receive MIPI signals；The rgb interface of signal conversion unit is electrically connected with RGB, to receive rgb signal or output rgb signal；The LVDS interface of signal conversion unit is electrically connected with LVDS units, to export LVDS signals；Signal conversion unit is electrically connected with control unit, and the clock end of crystal oscillator unit is also via the 3rd capacity earth, and the first digital power end of signal conversion unit is electrically connected to the power end of crystal oscillator unit, and the power end of crystal oscillator unit is also grounded via filter unit；MIPI signals are converted into LVDS signals by control unit control signal converting unit, and either rgb signal is converted into LVDS signals by rgb signal or control unit control signal converting unit, can realize that multi-signal signal is changed, integrated level is high, highly versatile.
Description
Technical field
The utility model is related to signal switch technology field, more particularly to a kind of multi signal change-over circuit.
Background technology
It is applied at present in test or mainboard, realizes that liquid crystal display (Liquid Crystal Display, LCD) is shown
When shielding signal conversion, be transformed into another signal from a kind of signal and typically realized using a bridging chip IC, such as existing skill
, it is necessary to using model ICN6211 bridging chip IC when MIPI signals being converted into rgb signal in art, and by MIPI signals
When being converted into LVDS signals, then the bridging chip IC using model ICN6201 is needed, and rgb signal is converted into LVDS letters
Number when, then need the bridging chip IC using model DTC34LM85/DS90C385；Now, if changing different type interface
The LCD display modules of (interface type such as RGB, LVDS, MIPI), then need to re-replace bridging chip IC and circuit design, from
And increase the time cost for changing LCD display modules, its versatility is also very limited, be unfavorable for machine product competition and
Safeguard.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of multi signal change-over circuit, can realize multi-signal
Signal is changed, and integrated level is high, highly versatile.
The utility model provides a kind of multi signal change-over circuit, the multi signal change-over circuit include signal conversion unit,
MIPI units, RGB unit, LVDS units, control unit, crystal oscillator unit, multiple filter units, the first magnetic bead, the second magnetic bead,
One resistance, second resistance, the first electric capacity, the second electric capacity and the 3rd electric capacity；The MIPI interface and MIPI of the signal conversion unit
Unit is electrically connected, to receive MIPI signals；The rgb interface of the signal conversion unit is electrically connected with RGB, to receive rgb signal
Or output rgb signal；The LVDS interface of the signal conversion unit is electrically connected with LVDS units, to export LVDS signals；Institute
The the first digital power end for stating signal conversion unit is electrically connected with the 3rd digital power end of described control unit, and the signal turns
The analog power end for changing unit is electrically connected via first magnetic bead with the power end of described control unit, and the signal conversion is single
Second digital power end of member is electrically connected via the second magnetic bead with the power end of described control unit, the signal conversion unit
Clock line is electrically connected with the clock line of described control unit, the data wire of the signal conversion unit and the number of described control unit
Electrically connected according to line；The first end of the first resistor is electrically connected to the first digital power end of the signal conversion unit, described
Second end of first resistor is electrically connected to the clock line of the signal conversion unit, and the first end of the second resistance is electrically connected to
First digital power end of the signal conversion unit, the first end of the second resistance is electrically connected to the signal conversion unit
Data wire；3rd digital power end of the signal conversion unit via the first capacity earth, the signal conversion unit
Analog power end is via the second capacity earth；The clock end of the signal conversion unit is electrically connected with the clock end of the crystal oscillator unit
Connect, the clock end of the crystal oscillator unit is also via the 3rd capacity earth, the first digital power end electricity of the signal conversion unit
The power end of the crystal oscillator unit is connected to, the power end of the crystal oscillator unit is also grounded via the filter unit；The control
Unit processed controls the signal conversion unit that MIPI signals are converted into LVDS signals, and either rgb signal or the control are single
Rgb signal is converted into LVDS signals by converting unit described in first control signal.
Specifically, the multi signal change-over circuit also includes 3rd resistor, the first end of the 3rd resistor and the letter
The MIPI expansion interfaces selection end electrical connection of number converting unit, the second end ground connection of the 3rd resistor.
Specifically, the multiple filter unit includes the 4th electric capacity and the 5th electric capacity, the first end of the 4th electric capacity
Ground connection, the second end of the 4th electric capacity is respectively electrically connected to the first digital power end, the second digital power end, the 3rd number
Word power end and analog power end, the first end of the 5th electric capacity are electrically connected to the first end of the 4th electric capacity, described
Second end of five electric capacity is electrically connected to the second end of the 4th electric capacity.
As can be seen here, a kind of multi signal change-over circuit that the utility model embodiment is provided, can be according to realizing MIPI
Signal is converted into LVDS signals, MIPI signals are converted into rgb signal or rgb signal is converted into a variety of letters such as LVDS signals
Changed between number, increase ageing, to meet the test of LCD display or applied in mainboard, possessing the high and many work(of integrated level
The features such as energy property, even if when changing different type interface LCD display modules, signal bridging chip is also changed without as far as possible, strengthen
Product versatility and product competitiveness.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, and in order to allow above and other purpose of the present utility model, feature
It can be become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
The structured flowchart for the signaling conversion circuit that Fig. 1 provides for the utility model embodiment.
The electrical block diagram for the signaling conversion circuit that Fig. 2 provides for the utility model embodiment.
The electrical block diagram of the MIPI units for the signaling conversion circuit that Fig. 3 provides for the utility model embodiment.
The electrical block diagram of the RGB unit for the signaling conversion circuit that Fig. 4 provides for the utility model embodiment.
The electrical block diagram of the LVDS units for the signaling conversion circuit that Fig. 5 provides for the utility model embodiment.
The electrical block diagram of the control unit for the signaling conversion circuit that Fig. 6 provides for the utility model embodiment.
Embodiment
In order to further illustrate that the utility model is to reach technological means and effect that expected purpose is taken, tie below
Accompanying drawing and preferred embodiment are closed, the utility model is described in detail as follows.
It refer to Fig. 1 and Fig. 6, the structural frames for the multi signal change-over circuit 100 that Fig. 1 provides for the utility model embodiment
Figure, the electrical block diagram for the multi signal change-over circuit 100 that Fig. 2 provides for the utility model embodiment, Fig. 3 is that this practicality is new
The electrical block diagram of the MIPI units for the signaling conversion circuit that type embodiment is provided, Fig. 4 is that the utility model embodiment is carried
The electrical block diagram of the RGB unit of the signaling conversion circuit of confession, the signal conversion that Fig. 5 provides for the utility model embodiment
The electrical block diagram of the LVDS units of circuit, the control for the signaling conversion circuit that Fig. 6 provides for the utility model embodiment
The electrical block diagram of unit.Multi signal change-over circuit be applied to liquid crystal display module (Liquid Crystal Display,
LCD in test) or mainboard, such as multi signal change-over circuit 100 can be, but not limited to be applied to cell phone mainboard, tablet personal computer master
Plate or liquid crystal display module.As shown in Figures 1 to 6, multi signal change-over circuit 100 includes signal conversion unit 101, MIPI units
102nd, RGB unit 103, LVDS units 104, control unit 105, crystal oscillator unit 106, multiple filter units 107, the first magnetic bead
L1, the second magnetic bead L2, first resistor R1, second resistance R2, the first electric capacity C1, the second electric capacity C2 and the 3rd electric capacity C3.
The MIPI interfaces of signal conversion unit 101 are electrically connected with MIPI units 102, to receive MIPI signals.Specifically, exist
In the present embodiment, MIPI interface MIPI_CLKP, MIPI_CLKN, MIPI_D0P, the MIPI_D0N of signal conversion unit 101,
The MIPI of MIPI_D1P, MIPI_D1N, MIPI_D2P, MIPI_D2N, MIPI_D3P, MIPI_D3N respectively with MIPI units 102
Interface MIPI_CLKP, MIPI_CLKN, MIPI_D0P, MIPI_D0N, MIPI_D1P, MIPI_D1N, MIPI_D2P, MIPI_
D2N, MIPI_D3P, MIPI_D3N correspondence are connected, analog power end AVDD33 and the signal conversion unit 101 of MIPI units 102
Analog power end AVDD33 electrical connection, MIPI units 102 earth terminal ground connection so that signal conversion unit 101 can
MIPI signals are obtained from MIPI units 102.
The rgb interface of signal conversion unit 101 is electrically connected with RGB, to receive rgb signal or output rgb signal.Specifically
Ground, in the present embodiment, the rgb interface R0 of signal conversion unit 101~R7, G0~G7, B0~B7, DEN, PCLK, HSYNC,
VSYNC rgb interface R0~R7 respectively with RGB unit 103, G0~G7, B0~B7, DEN, PCLK, HSYNC, VSYNC correspondences connect
Connect, the second digital power end DVDD33 of RGB unit 103 and the second digital power end DVDD33 electricity of signal conversion unit 101
Connection, the earth terminal ground connection of RGB unit 103, so that signal conversion unit 101 can obtain RGB from RGB unit 103
Signal, or rgb signal is transmitted to RGB unit 103.
The LVDS interface of signal conversion unit 101 is electrically connected with LVDS units 104, to export LVDS signals.Specifically, exist
In the present embodiment, the LVDS interface LVDS_D0P, LVDS_D0N, LVDS_D1P, LVDS_D1N, LVDS_ of signal conversion unit 101
The LVDS interface of CLKP, LVDS_CLKN, LVDS_D2P, LVDS_D2N, LVDS_D3P, LVDS_D3N respectively with LVDS units 104
LVDS_D0P,LVDS_D0N,LVDS_D1P,LVDS_D1N,LVDS_CLKP,LVDS_CLKN,LVDS_D2P,LVDS_D2N,
LVDS_D3P, LVDS_D3N correspondence are connected, the analog power end AVDD33 of LVDS units 104 and the mould of signal conversion unit 101
Intend power end AVDD33 electrical connection, the earth terminal ground connection of LVDS units 104, so that signal conversion unit 101 is by output
LVDS signals are transmitted to LVDS units 104.
First digital power end DVDD18 of signal conversion unit 101 and the first digital power end of control unit 105
DVDD18 is electrically connected.The analog power end AVDD33 of signal conversion unit 101 is via the first magnetic bead L1 and the electricity of control unit 105
Source is electrically connected, and specifically, the analog power end AVDD33 of control unit 105 is electrically connected with the first magnetic bead L1 first end, the
One magnetic bead L1 the second end is electrically connected with the power end of signal conversion unit 101 to be connect, so as to provide mould to signal conversion unit 101
Intend voltage.Second digital power end of signal conversion unit 101 is via the second magnetic bead L2 and the power end VDD of control unit 105
Electrical connection, specifically, the second digital power end DVDD33 of control unit 105 is electrically connected with the second magnetic bead L2 first end, the
Two magnetic bead L2 the second end is electrically connected with the power end VDD of signal conversion unit 101, so as to be provided to signal conversion unit 101
Second digital voltage, specifically, in the present embodiment, the second digital voltage can be, but not limited to 3.0~3.6V, the such as second number
Word voltage is 3.3V.Specifically, magnetic bead L is used to suppress on power line high-frequency noise and spike interference.Signal conversion unit 101
Clock line I2C_SCL electrically connected with the clock line SCL of control unit 105, the data wire I2C_SDA of signal conversion unit 101
Electrically connected with the data wire SDA of control unit 105, control signal is transmitted to signal conversion unit 101, so that control signal
MIPI signals are converted into LVDS signals by converting unit 101, and MIPI signals either are converted into rgb signal or by rgb signal
It is converted into LVDS signals.The earth terminal DVSS ground connection of signal conversion unit 101, the MIPI interfaces MIPI_ of signal conversion unit 101
AVDD33, MIPI_BGVDD33 receive analog voltage.Wherein, signal conversion unit 101 can be, but not limited to model ZA7783
Signal conversion chip.
First resistor R1 first end is electrically connected to the first digital power end DVDD18 of signal conversion unit 101, first
Resistance R1 the second end is electrically connected to the clock line I2C_SCL of signal conversion unit 101.Second resistance R2 first end electrical connection
To the first digital power end DVDD18 of signal conversion unit 101, second resistance R2 first end is electrically connected to signal conversion list
The data wire I2C_SDA of member 101.
3rd digital power end DVDD12 of signal conversion unit 101 is grounded via the first electric capacity C1, specifically, and signal turns
The 3rd digital power end DVDD12 for changing unit 101 is electrically connected with the first electric capacity C1 first end, the first electric capacity C1 the second end
Ground connection.The analog power end AVDD33 of signal conversion unit 101 is grounded via the second electric capacity C2, specifically, signal conversion unit
101 analog power end AVDD33 is electrically connected with the second electric capacity C2 first end, the second electric capacity C2 the second end ground connection.
The clock end XCLK of signal conversion unit 101 is electrically connected with the clock end CLK of crystal oscillator unit 106, crystal oscillator unit 106
Clock end CLK be also grounded via the 3rd electric capacity C3, the first digital power end DVDD18 of signal conversion unit 101 is electrically connected to
The power end of crystal oscillator unit 106, the power end V33 of crystal oscillator unit 106 is also grounded via filter unit 107, crystal oscillator unit 106
Earth terminal GND is grounded.Wherein, in the present embodiment, crystal oscillator unit 106 can be, but not limited to active crystal oscillator.3rd electric capacity C3, filter
Ripple unit 107 and crystal oscillator unit 106 collectively form external clock unit, so as to provide accurate reference to signal conversion unit 101
Clock signal.
Specifically, in one embodiment, multi signal change-over circuit 100 also includes 3rd resistor R3,3rd resistor R3's
First end is electrically connected with the MIPI expansion interfaces selection end MIPI_REXT of signal conversion unit 101,3rd resistor R3 the second end
Ground connection, so as to the resistance value by adjusting different 3rd resistor R3, with the MIPI interfaces of Regulate signal converting unit 101
Driving force.
Specifically, in the present embodiment, multiple filter units 107 include the 4th electric capacity C4 and the 5th electric capacity C5, the 4th
Electric capacity C4 first end ground connection, the 4th electric capacity C4 the second end is respectively electrically connected to the first digital power end DVDD18, the second number
Word power end DVDD33 and analog power end AVDD33, the 5th electric capacity C5 first end is electrically connected to the first of the 4th electric capacity C4
End, the 5th electric capacity C5 the second end is electrically connected to the 4th electric capacity C4 the second end.
As can be seen here, a kind of multi signal change-over circuit 100 that the utility model embodiment is provided, can be incited somebody to action according to realizing
MIPI signals are converted into LVDS signals, MIPI signals are converted into rgb signal or rgb signal are converted into LVDS signals etc. many
Changed between kind of signal, increase ageing, with meet LCD display test or applied in mainboard, possess integrated level it is high and
Multi-functional the features such as, even if change different type interface LCD display modules, signal bridging chip is also changed without as far as possible,
Strengthen product versatility and product competitiveness.
It is described above, only it is preferred embodiment of the present utility model, not makees any formal to the utility model
Limitation, although the utility model is disclosed above with preferred embodiment, but is not limited to the utility model, any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent variations and the modification made according to technical spirit of the present utility model to above example, still
Belong in the range of technical solutions of the utility model.
Claims (3)
1. a kind of multi signal change-over circuit, it is characterised in that it is mono- that the multi signal change-over circuit includes signal conversion unit, MIPI
Member, RGB unit, LVDS units, control unit, crystal oscillator unit, multiple filter units, the first magnetic bead, the second magnetic bead, the first electricity
Resistance, second resistance, the first electric capacity, the second electric capacity and the 3rd electric capacity；
The MIPI interfaces of the signal conversion unit are electrically connected with MIPI units, to receive MIPI signals；The signal conversion is single
The rgb interface of member is electrically connected with RGB, to receive rgb signal or output rgb signal；The LVDS of the signal conversion unit connects
Mouth is electrically connected with LVDS units, to export LVDS signals；
First digital power end of the signal conversion unit is electrically connected with the 3rd digital power end of described control unit, described
The analog power end of signal conversion unit is electrically connected via first magnetic bead with the power end of described control unit, the signal
Second digital power end of converting unit is electrically connected via the second magnetic bead with the power end of described control unit, the signal conversion
The clock line of unit is electrically connected with the clock line of described control unit, and the data wire of the signal conversion unit and the control are single
The data wire electrical connection of member；
The first end of the first resistor is electrically connected to the first digital power end of the signal conversion unit, the first resistor
The second end be electrically connected to the clock line of the signal conversion unit, the first end of the second resistance is electrically connected to the signal
First digital power end of converting unit, the first end of the second resistance is electrically connected to the data of the signal conversion unit
Line；
3rd digital power end of the signal conversion unit is via the first capacity earth, the simulation electricity of the signal conversion unit
Source is via the second capacity earth；
The clock end of the signal conversion unit is electrically connected with the clock end of the crystal oscillator unit, the clock end of the crystal oscillator unit
Also via the 3rd capacity earth, the first digital power end of the signal conversion unit is electrically connected to the power supply of the crystal oscillator unit
End, the power end of the crystal oscillator unit is also grounded via the filter unit；
Described control unit control the signal conversion unit by MIPI signals be converted into LVDS signals either rgb signal or
Rgb signal is converted into LVDS signals by converting unit described in described control unit control signal.
2. multi signal change-over circuit as claimed in claim 1, it is characterised in that the multi signal change-over circuit also includes the 3rd
Resistance, the MIPI expansion interfaces selection end of the first end of the 3rd resistor and the signal conversion unit is electrically connected, and described the
The second end ground connection of three resistance.
3. signaling conversion circuit as claimed in claim 1, it is characterised in that the multiple filter unit includes the 4th electric capacity
With the 5th electric capacity, the first end of the 4th electric capacity is grounded, and the second end of the 4th electric capacity is respectively electrically connected to described first
Digital power end, the second digital power end and analog power end, the first end of the 5th electric capacity are electrically connected to the 4th electricity
The first end of appearance, the second end of the 5th electric capacity is electrically connected to the second end of the 4th electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621424243.9U CN206379936U (en) | 2016-12-22 | 2016-12-22 | Multi signal change-over circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621424243.9U CN206379936U (en) | 2016-12-22 | 2016-12-22 | Multi signal change-over circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206379936U true CN206379936U (en) | 2017-08-04 |
Family
ID=59407409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621424243.9U Active CN206379936U (en) | 2016-12-22 | 2016-12-22 | Multi signal change-over circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206379936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036276A (en) * | 2018-09-25 | 2018-12-18 | 深圳市峰泳科技有限公司 | A kind of Micro-OLED miniscope driving circuit |
| CN111491100A (en) * | 2020-04-20 | 2020-08-04 | 南京莱斯电子设备有限公司 | Method for reducing image processing power consumption on embedded platform |
-
2016
- 2016-12-22 CN CN201621424243.9U patent/CN206379936U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036276A (en) * | 2018-09-25 | 2018-12-18 | 深圳市峰泳科技有限公司 | A kind of Micro-OLED miniscope driving circuit |
| CN111491100A (en) * | 2020-04-20 | 2020-08-04 | 南京莱斯电子设备有限公司 | Method for reducing image processing power consumption on embedded platform |
| CN111491100B (en) * | 2020-04-20 | 2021-04-27 | 南京莱斯电子设备有限公司 | Method for reducing image processing power consumption on embedded platform |
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