CN208271081U - A kind of mainboard and computer equipment - Google Patents
A kind of mainboard and computer equipment Download PDFInfo
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- CN208271081U CN208271081U CN201820997524.6U CN201820997524U CN208271081U CN 208271081 U CN208271081 U CN 208271081U CN 201820997524 U CN201820997524 U CN 201820997524U CN 208271081 U CN208271081 U CN 208271081U
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- analog switch
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Abstract
The embodiment of the present application provides a kind of mainboard and computer equipment, is related to field of computer technology.The embodiment of the present application by increasing analog switch in the motherboard, the input interface of processor and analog switch is connected, control signal is sent to analog switch, each output interface of analog switch is correspondingly connected with a voicefrequency circuit, analog switch is connected with the specific audio frequency circuit at least two voicefrequency circuits under the influence of control signals, by processor.When only one audio bus interface in processor, by increasing analog switch, so that processor can connect at least two voicefrequency circuits simultaneously, also allowing for mainboard can provide at least two audio interface, and cost is relatively low for increased analog switch, and the package dimension of analog switch is smaller, peripheral circuit is simple, it is easy to realize on pcb board, and the power consumption of analog switch is smaller, more power consumption will not be increased to mainboard.
Description
Technical field
The utility model relates to field of computer technology, more particularly to a kind of mainboard and computer equipment.
Background technique
When mainboard not only supports audio input output interface, but also supports the display interface of subsidiary audio-frequency information, it usually needs
Processor has two audio bus interfaces, for connecting the display of audio input output interface and subsidiary audio-frequency information simultaneously
Interface.
But when processor is not there are two audio bus interface, as shown in Figure 1, can be by PCB (Printed
Circuit Board, printed circuit board) on increase an extended chip, while needing processor to be additionally provided an extension and connecing
Mouthful, the expansion interface of extended chip and processor is connected by expansion bus, by extended chip processor is indirectly connected with
To audio input/output circuit, simultaneous processor can be connected to the display circuit of subsidiary audio-frequency information by audio bus interface.
But by increasing extended chip on pcb board, so that mainboard is capable of providing two kinds of audio interface, i.e. audio is defeated
Enter the display interface of output interface and subsidiary audio-frequency information, higher cost, the more occupancy pcb board of increased extended chip
Panel, and power consumption is larger.
Utility model content
In view of the above problems, it proposes the embodiment of the present application and overcomes the above problem or at least partly in order to provide one kind
A kind of mainboard and computer equipment to solve the above problems, to solve by increasing extended chip on pcb board, so that mainboard was both
It is capable of providing audio input output interface, and is capable of providing the display interface of subsidiary audio-frequency information, higher cost occupies PCB
The area of plate is larger, and the problem that power consumption is larger.
To solve the above-mentioned problems, the embodiment of the present application discloses a kind of mainboard, comprising: processor, analog switch and extremely
Few two voicefrequency circuits；The analog switch includes an input interface and at least two output interfaces；
The processor is connect with the input interface of the analog switch, for sending control letter to the analog switch
Number；
Each output interface of the analog switch is correspondingly connected with a voicefrequency circuit, for the work in the control signal
Under, the processor is connected with the specific audio frequency circuit at least two voicefrequency circuit.
Optionally, the audio bus interface of the processor and the input interface of the analog switch are total by multiplexing audio
Line connection.
Optionally, at least two voicefrequency circuit is connected to the processor respectively by signal wire, is used for described
Processor sends insertion detection signal, so that the processor, which detects signal according to the insertion, determines the control signal.
Optionally, the processor includes HDA (High Definition Audio, HD Audio) controller and IIS
(Inter IC Sound, integrated circuit built-in audio) controller, at least two voicefrequency circuit include audio input output
The display circuit of circuit and subsidiary audio-frequency information；
First output interface of the analog switch is connect by HDA bus with the audio input/output circuit, described
Second output interface of analog switch is connect by IIS bus with the display circuit of the subsidiary audio-frequency information；
The audio input/output circuit is connect by the first signal wire with the HDA controller of the processor, described attached
Display circuit with audio-frequency information is connect by second signal line with the ITS controller of the processor.
Optionally, the analog switch includes first switch module, second switch module and selecting module；
The first switch module the first output with the input interface of the analog switch and the analog switch respectively
Interface connection；
The second switch module the second output with the input interface of the analog switch and the analog switch respectively
Interface connection；
The selecting module is connect with the first switch module, second switch module respectively, for believing in the control
Under the action of number, controls first switch module or second switch module is opened.
Optionally, the mainboard further includes circuit board, the processor, the analog switch and at least two audio
Circuit is arranged on the circuit board
Optionally, the processor is Godson 2K1000 processor.
To solve the above-mentioned problems, the embodiment of the present application also discloses a kind of computer equipment, including above-mentioned mainboard.
The embodiment of the present application includes the following advantages:
By increasing analog switch in the motherboard, the input interface of processor and analog switch is connected, to analog switch
Control signal is sent, each output interface of analog switch is correspondingly connected with a voicefrequency circuit, and analog switch is in control signal
Under effect, processor is connected with the specific audio frequency circuit at least two voicefrequency circuits.When only one audio in processor
When bus interface, mainboard is also allowed for so that processor can connect at least two voicefrequency circuits simultaneously by increasing analog switch
It can provide at least two audio interface, when at least two voicefrequency circuits include audio input/output circuit and subsidiary audio-frequency information
When display circuit, mainboard can provide audio input output interface and provide the display interface of subsidiary audio-frequency information, increased
Cost is relatively low for analog switch, and the package dimension of analog switch is smaller, and peripheral circuit is simple, is easy to realize on pcb board, and simulates
The power consumption of switch is smaller, will not increase more power consumption to mainboard.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of existing mainboard；
Fig. 2 shows a kind of structural schematic diagrams of mainboard of the embodiment of the present application；
Fig. 3 shows the structural schematic diagram of another mainboard of the embodiment of the present application；
Fig. 4 shows a kind of structural schematic diagram of analog switch of the embodiment of the present application.
Specific embodiment
In order to make the above objects, features, and advantages of the present application more apparent, with reference to the accompanying drawing and it is specific real
Applying mode, the present application will be further described in detail.
Embodiment one
Referring to Fig. 2, a kind of structural schematic diagram of mainboard of the embodiment of the present application is shown.
The embodiment of the present application provides a kind of mainboard, comprising: processor 21, analog switch 22 and at least two voicefrequency circuits
23；Analog switch 22 includes an input interface and at least two output interfaces；Processor 21 and the input of analog switch 22 connect
Mouth connection, for sending control signal to analog switch 22；Each output interface of analog switch 22 is correspondingly connected with an audio
Circuit 23 is used under the influence of control signals, by the specific audio frequency circuit in processor 21 and at least two voicefrequency circuits 23
Conducting.
Wherein, processor 21 only one audio bus interface in the application, in the motherboard increased analog switch 22
Including an input interface, the audio bus interface of processor 21 and the input interface of analog switch 22 pass through multiplexing audio-frequency bus
Connection；And analog switch 22 includes at least two output interfaces, each output interface is correspondingly connected with a voicefrequency circuit 23, such as schemes
N number of voicefrequency circuit, respectively voicefrequency circuit 1 to voicefrequency circuit N are shared shown in 2, on mainboard, N is the positive integer greater than 1, then mould
The quantity of the output interface of quasi- switch 22 is also N, and an output interface of analog switch 22 is correspondingly connected with a voicefrequency circuit 23,
Analog switch 22 is connect with the signal input interface in voicefrequency circuit 23, and the data that processor 21 is sent mainly are passed through letter
Number input interface is sent in voicefrequency circuit 23.
For example, i.e. N is 3 when the voicefrequency circuit on mainboard is 3, the quantity of the output interface of analog switch 22 is also
3。
It should be noted that the input interface of the audio bus interface of processor 21 and analog switch 22 passes through multiplexing audio
Bus connection, by being multiplexed audio-frequency bus, processor 21 both can send corresponding number to voicefrequency circuit 1 by analog switch 22
According to corresponding data can also be sent to voicefrequency circuit N by analog switch 22；It can provide an audio in one voicefrequency circuit
Interface further includes certainly other relevant audio frequency apparatuses, such as sound card in voicefrequency circuit 23.
In the embodiment of the present application, at least two voicefrequency circuits 23 are connect with processor 21 respectively by signal wire, are used for
Insertion detection signal is sent to processor 21, so that processor 21 determines control signal according to insertion detection signal.
As shown in Fig. 2, voicefrequency circuit 1 is connected to processor 21 by signal wire 1, voicefrequency circuit N is connected by signal wire N
To processor 21；Each voicefrequency circuit 23 includes audio interface, to connect external audio frequency apparatus, when in voicefrequency circuit 1
Audio interface when being inserted into external audio frequency apparatus, when such as earphone, voicefrequency circuit 1 is sent to processor 21 by signal wire 1 and is inserted
Enter to detect signal 1, after processor 21 receives insertion detection signal 1, control signal 1 is determined according to insertion detection signal 1, will be controlled
Signal 1 processed is sent to analog switch 22, and processor 21 and voicefrequency circuit 1 are connected by analog switch 22；When in voicefrequency circuit N
Audio interface when being inserted into external audio frequency apparatus, voicefrequency circuit N sends insertion detection signal to processor 21 by signal wire N
N after processor 21 receives insertion detection signal N, determines control signal N according to insertion detection signal N, by control signal N hair
It send to analog switch 22, processor 21 is connected with voicefrequency circuit N by analog switch 22.
Application mainboard when, if using voicefrequency circuit 1 audio interface when, would not use other voicefrequency circuits sound
Frequency interface, such as voicefrequency circuit 2 to the audio interface of voicefrequency circuit N；If using voicefrequency circuit N audio interface when, would not
Using the audio interface of other voicefrequency circuits, such as voicefrequency circuit 1 to the audio interface of voicefrequency circuit N-1.Therefore, processor 21 can
Signal is detected according to the insertion of the audio interface in voicefrequency circuit, which specifically used part voicefrequency circuit output sound of mainboard determined
Frequently.
In the embodiment of the present application, mainboard further includes circuit board, processor 21, analog switch 22 and at least two audio-frequency electrics
Road 23 is respectively provided on circuit boards.Wherein, circuit board can be pcb board.
Referring to Fig. 3, the structural schematic diagram of another mainboard of the embodiment of the present application is shown.
In a kind of embodiment of the application, processor 21 includes HDA controller and ITS controller, at least two audio-frequency electrics
Road 23 includes the display circuit 232 of audio input/output circuit 231 and subsidiary audio-frequency information, and the first output of analog switch 22 connects
Mouthful connect with audio input/output circuit 231 by HDA bus, the second output interface of analog switch 22 pass through IIS bus and
The display circuit 232 of subsidiary audio-frequency information connects；Audio input/output circuit 231 passes through the first signal wire and processor 21
The display circuit of the connection of HDA controller, subsidiary audio-frequency information 232 is connected by the ITS controller of second signal line and processor 21
It connects.
Audio Controller can be integrated in processor 21, such as HDA controller and ITS controller, Audio Controller is main
Effect is output order and data exchange, should also include the audio coding decoding mutually arranged in pairs or groups with Audio Controller in voicefrequency circuit
Device, i.e., the Codec chip on mainboard, effect are that the digital signal for handling Audio Controller well is converted into analog signal, also will
Obtained analog signal is converted to digital signal and is output in Audio Controller.
When being provided with the display circuit 232 of audio input/output circuit 231 and subsidiary audio-frequency information on mainboard, simulation is opened
Closing 22 includes two output interfaces, respectively the first output interface and the second output interface, by the first output of analog switch 22
Interface is connect by HDA bus with audio input/output circuit 231, and the second output interface of analog switch 22 is total by IIS
Line is connect with the display circuit 232 of subsidiary audio-frequency information.
Wherein, the display circuit 232 of subsidiary audio-frequency information can be HDMI (High Definition Multimedia
Interface, high-definition multimedia interface) circuit, DP (Display Port, display interface) circuit, eDP (Embedded
Display Port, embedded display interface) circuit, DVI (Digital Visual Interface, digital visual interface) electricity
Road, the audio interface being attached in the display circuit 232 of audio-frequency information both can also transmit audio letter with transmission video signal
Number.
It should be noted that interface and the second letter that the HDA controller of the first signal wire and processor 21 is correspondingly connected with
The interface that the ITS controller of number line and processor 21 is correspondingly connected with, is existing interface in processor 21, does not need processor
It is additionally provided interface.
Referring to Fig. 4, a kind of structural schematic diagram of analog switch of the embodiment of the present application is shown.
Wherein, analog switch 22 includes first switch module 221, second switch module 222 and selecting module 223；First
Switch module 221 is connect with the input interface of analog switch 22 and the first output interface respectively；Second switch module 222 respectively with
The input interface of analog switch 22 and the connection of the second output interface；Selecting module 223 respectively with first switch module 221, second
Switch module 222 connects, under the influence of control signals, control first switch module 221 or second switch module 222 to be opened
It opens.
When analog switch 22 includes the first output interface and the second output interface, need to be arranged the inside analog switch 22
One switch module 221 and second switch module 222 send control signal to the control pin S of analog switch 22 in processor 21
Afterwards, selecting module 223 determines first switch according to the OE signal of control signal and OE (Output Enable, output are enabled) end
Module 221 or second switch module 222 are opened, and after first switch module 221 is opened, input signal can be connect by the first output
Mouth output is to audio input/output circuit, and after second switch module 222 is opened, input signal can be defeated by the second output interface
Out to the display circuit of subsidiary audio-frequency information.
Wherein, 4 signal input channels of the input interface of 1A, 2A, 3A and 4A expression analog switch 22,1B1,2B1,
3B1 and 4B1 indicates that 4 signal output channels of the first output interface of analog switch 22,1B2,2B2,3B2 and 4B2 indicate mould
4 signal output channels of the second output interface of quasi- switch 22.
First switch module 221 may include 4 switch SW, a signal input channel and the output of a corresponding signal
1 switch SW is provided between channel, for inputting a signal into channel and signal output channels conducting；Second switch module 222
It also may include 4 switch SW；Switch SW can be triode, it is of course also possible to use other devices.
Selecting module 223 includes buffer P, the first phase inverter Y1, the first AND gate circuit F1, the second phase inverter Y2 and second
AND gate circuit F2.
The input terminal of buffer P is connect with control pin S, the input terminal of the output end of buffer P and the first phase inverter Y1
Connection, meanwhile, the output end of buffer P is connect with the first input end of the second AND gate circuit F2；The output of first phase inverter Y1
End is connect with the first input end of the first AND gate circuit F1；The input terminal of second phase inverter Y2 is connect with the end OE, the second phase inverter
The output end of Y2 is connect with the second input terminal of the first AND gate circuit F1, meanwhile, the output end of the second phase inverter Y2 and second with
The second input terminal of gate circuit F2 connects；The output end and 4 switch SW in first switch module 221 of first AND gate circuit F1
Connection, the output end of the second AND gate circuit F2 are connect with 4 switch SW in second switch module 222.
Buffer P does not have logical conversion ability, and the level of output signal is equal to the level of input signal；Phase inverter can also claim
For not circuit, when the input signal of phase inverter is high level, output signal is low level, when the input signal of phase inverter is
When low level, output signal is high level；For AND gate circuit, only when two input signals are high level, output letter
It number is just high level, otherwise, output signal is low level.
Therefore, through circuit analysis it can be seen that, only when the OE signal of the end OE input is low level, the analog switch 22 is
It can work, when controlling pin S input low level, the first AND gate circuit F1 exports high level, so that in first switch module 221
4 switch SW open, i.e., first switch module 221 is opened, and processor 21 is connected with audio input/output circuit；When control is drawn
When foot S input high level, the second AND gate circuit F2 exports high level, so that 4 switch SW in second switch module 222 are beaten
It opens, i.e., second switch module 222 is opened, and processor 21 is connected with the display circuit of subsidiary audio-frequency information.
It should be noted that when being provided with 3 voicefrequency circuits on mainboard, correspondingly, settable 3 switching moldings in Fig. 4
Processor 21 is connected with one of specific audio frequency circuit in block.
In the embodiment of the present application, processor is Godson 2K1000 processor, and Godson 2K1000 processor is a kind of high property
SOC (System On Chip, system level chip) processor of energy, although Godson 2K1000 processor supports two audios total
Line, but the pin multiplexing of two audio-frequency bus can only externally provide a kind of audio bus interface in the same time.Therefore, may be used
Increase analog switch 22 on mainboard, so that the mainboard for being provided with Godson 2K1000 processor is capable of providing two kinds of audio interface,
The display interface of audio input output interface and subsidiary audio-frequency information is provided.
In the embodiment of the present application, by increasing analog switch in the motherboard, the input of processor and analog switch is connect
Mouth connection sends control signal to analog switch, and each output interface of analog switch is correspondingly connected with a voicefrequency circuit, simulates
Under the influence of control signals, processor is connected with the specific audio frequency circuit at least two voicefrequency circuits for switch.Work as processing
In device when only one audio bus interface, by increasing analog switch, so that processor can connect at least two audios simultaneously
Circuit, also allowing for mainboard can provide at least two audio interface, when at least two voicefrequency circuits include audio input output electricity
When the display circuit of road and subsidiary audio-frequency information, mainboard can provide audio input output interface and be attached to the aobvious of audio-frequency information
Show interface, cost is relatively low for increased analog switch, and the package dimension of analog switch is smaller, and peripheral circuit is simple, is easy in pcb board
Upper realization, and the power consumption of analog switch is smaller, will not increase more power consumption to mainboard.
Embodiment two
The embodiment of the present application also provides a kind of computer equipments, including above-mentioned mainboard.
The description of embodiment one is referred to about the specific descriptions of mainboard, the embodiment of the present application repeats no more this.
In the embodiment of the present application, which includes mainboard, by increasing analog switch in the motherboard, will be handled
The connection of the input interface of device and analog switch sends control signal to analog switch, and each output interface of analog switch is corresponding
Connect a voicefrequency circuit, analog switch under the influence of control signals, by the finger in processor and at least two voicefrequency circuits
The conducting of accordatura frequency circuit.When only one audio bus interface in processor, by increasing analog switch, so that processor can
At least two voicefrequency circuits are connected simultaneously, and also allowing for mainboard can provide at least two audio interface, when at least two audio-frequency electrics
When road includes audio input/output circuit and the display circuit for being attached to audio-frequency information, mainboard can provide audio input output interface
And the display interface of subsidiary audio-frequency information, cost is relatively low for increased analog switch, and the package dimension of analog switch is smaller, periphery
Circuit is simple, is easy to realize on pcb board, and the power consumption of analog switch is smaller, will not increase more power consumption to mainboard.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Above to a kind of mainboard provided by the utility model and computer equipment, it is described in detail, answers herein
The principles of the present invention and embodiment are expounded with specific case, the explanation of above example is only intended to sides
Assistant solves the method and its core concept of the utility model；At the same time, for those skilled in the art, according to the application's
Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as
Limitation to the application.
Claims (8)
1. a kind of mainboard characterized by comprising processor, analog switch and at least two voicefrequency circuits；The analog switch
Including an input interface and at least two output interfaces；
The processor is connect with the input interface of the analog switch, for sending control signal to the analog switch；
Each output interface of the analog switch is correspondingly connected with a voicefrequency circuit, for the effect in the control signal
Under, the processor is connected with the specific audio frequency circuit at least two voicefrequency circuit.
2. mainboard according to claim 1, which is characterized in that the audio bus interface of the processor is opened with the simulation
The input interface of pass passes through multiplexing audio-frequency bus connection.
3. mainboard according to claim 1, which is characterized in that at least two voicefrequency circuit by signal wire respectively with
The processor connection, for sending insertion detection signal to the processor, so that the processor is examined according to the insertion
It surveys signal and determines the control signal.
4. mainboard according to claim 3, which is characterized in that the processor include HD Audio HDA controller and
Integrated circuit built-in audio ITS controller, at least two voicefrequency circuit include audio input/output circuit and subsidiary audio
The display circuit of information；
First output interface of the analog switch is connect by HDA bus with the audio input/output circuit, the simulation
Second output interface of switch is connect by IIS bus with the display circuit of the subsidiary audio-frequency information；
The audio input/output circuit is connect by the first signal wire with the HDA controller of the processor, the subsidiary sound
The display circuit of frequency information is connect by second signal line with the ITS controller of the processor.
5. mainboard according to claim 4, which is characterized in that the analog switch includes first switch module, second opens
Close module and selecting module；
The first switch module the first output interface with the input interface of the analog switch and the analog switch respectively
Connection；
The second switch module the second output interface with the input interface of the analog switch and the analog switch respectively
Connection；
The selecting module is connect with the first switch module, second switch module respectively, in the control signal
Under effect, controls first switch module or second switch module is opened.
6. mainboard according to claim 1, which is characterized in that the mainboard further includes circuit board, the processor, described
Analog switch and at least two voicefrequency circuit are arranged on the circuit board.
7. mainboard according to claim 1 to 6, which is characterized in that the processor is Godson 2K1000 processing
Device.
8. a kind of computer equipment, which is characterized in that including mainboard such as of any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820997524.6U CN208271081U (en) | 2018-06-26 | 2018-06-26 | A kind of mainboard and computer equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820997524.6U CN208271081U (en) | 2018-06-26 | 2018-06-26 | A kind of mainboard and computer equipment |
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| Publication Number | Publication Date |
|---|---|
| CN208271081U true CN208271081U (en) | 2018-12-21 |
Family
ID=64690209
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820997524.6U Active CN208271081U (en) | 2018-06-26 | 2018-06-26 | A kind of mainboard and computer equipment |
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| CN (1) | CN208271081U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581129A (en) * | 2020-03-24 | 2020-08-25 | 西安广和通无线通信有限公司 | Terminal mainboard circuit, terminal equipment and ADC interface multiplexing control method |
| CN113127395A (en) * | 2021-03-26 | 2021-07-16 | 山东英信计算机技术有限公司 | Server mainboard I2C bus transmission device and method |
-
2018
- 2018-06-26 CN CN201820997524.6U patent/CN208271081U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581129A (en) * | 2020-03-24 | 2020-08-25 | 西安广和通无线通信有限公司 | Terminal mainboard circuit, terminal equipment and ADC interface multiplexing control method |
| CN113127395A (en) * | 2021-03-26 | 2021-07-16 | 山东英信计算机技术有限公司 | Server mainboard I2C bus transmission device and method |
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Address after: 100095 Building 2, Longxin Industrial Park, Zhongguancun environmental protection technology demonstration park, Haidian District, Beijing Patentee after: Loongson Zhongke Technology Co.,Ltd. Address before: 100095 Building 2, Longxin Industrial Park, Zhongguancun environmental protection technology demonstration park, Haidian District, Beijing Patentee before: LOONGSON TECHNOLOGY Corp.,Ltd. |