CN217690062U - Circuit board and electronic equipment - Google Patents
Circuit board and electronic equipment Download PDFInfo
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- CN217690062U CN217690062U CN202221608494.8U CN202221608494U CN217690062U CN 217690062 U CN217690062 U CN 217690062U CN 202221608494 U CN202221608494 U CN 202221608494U CN 217690062 U CN217690062 U CN 217690062U
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Abstract
The utility model discloses a circuit board and electronic equipment, this circuit board includes: master control chip and signal conversion equipment, signal conversion equipment includes: the signal conversion device comprises a signal repeater and a first signal conversion chip; the signal repeater is connected with the external interface and the first signal conversion chip and is used for sending the high-definition digital display interface standard type signals to be transmitted received from the external interface to the first signal conversion chip; and the first signal conversion chip is connected with the main control chip and used for converting the signals to be transmitted of the standard types of the high-definition digital display interfaces into signals of the interface types of the mobile industry processor and outputting the signals to the main control chip. The problem that the main control chip can only input specific types of signals is solved, the type conversion is carried out through the first signal conversion chip and the signals are output to the main control chip, the input requirements of the main control chip on different types of signals are met, and the applicable scene of the main control chip is expanded.
Description
Technical Field
The utility model relates to a signal processing technology field especially relates to a circuit board and electronic equipment.
Background
Based on the limitation of some special scenes in the industry, the terminal equipment can only select a specific type of main control chip to process signals, but the signal input interfaces of some main control chips can only transmit specific types of signals, and the input requirements on other types of signals cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model provides a circuit board and electronic equipment to solve the problem that main control chip can only transmit specific type signal.
According to the utility model discloses an aspect provides a circuit board, including main control chip and signal conversion device, signal conversion device includes: the signal conversion device comprises a signal repeater and a first signal conversion chip;
the signal repeater is connected with an external interface and the first signal conversion chip and is used for sending the high-definition digital display interface standard type to-be-transmitted signals received from the external interface to the first signal conversion chip;
the first signal conversion chip is connected with the main control chip and used for converting the signals to be transmitted of the high-definition digital display interface standard types into signals of mobile industry processor interface types and outputting the signals to the main control chip.
Optionally, the main control chip includes a first conversion module;
the external interface generates an insertion signal after being connected with an external terminal;
the main control chip is connected with the external interface, and the first conversion module is configured to be a first preset function after an insertion signal generated by the external interface is detected;
the first conversion module is connected with the signal transponder and receives a first preset type of signal to be transmitted by the signal transponder after the first conversion module is configured to have a first preset function.
Optionally, the first preset function is a universal serial bus function, and the first preset type is a universal serial bus type.
Optionally, the signal repeater is a multiplexer.
Optionally, the signal conversion apparatus further includes: a power transmission controller;
the power transmission controller is connected with the external interface and the signal repeater and used for controlling the signal type of the signal transmitted by the pin of the external interface according to the pin control information and sending the pin control information to the signal repeater.
Optionally, the power transmission controller is connected to an external terminal, and is configured to communicate with the external terminal and generate the pin control information according to a protocol.
Optionally, the main control chip further includes a second conversion module;
and when the main control chip does not detect the insertion signal generated by the external interface, the first conversion module and/or the second conversion module are configured to be a second preset function.
Optionally, the circuit board further comprises: a second signal conversion chip;
the second signal conversion chip is connected to the second conversion module, and is configured to convert the first to-be-transmitted signal output by the second conversion module configured as the second preset function into a second preset type of signal and output the second preset type of signal.
Optionally, the circuit board further comprises: a second signal conversion chip;
the second signal conversion chip is connected to the first conversion module, and is configured to convert a second signal to be sent output by the first conversion module configured as the second preset function into a second preset type of signal and output the second preset type of signal.
Optionally, the second preset function is a high-definition digital display interface standard function, and the second preset type is a high-definition multimedia interface type.
Optionally, the circuit board further comprises: a first switch;
the first end of the first switch is connected with the first conversion module, and the second end of the first switch is connected with the signal repeater and used for controlling the conduction of the first end and the second end of the first switch after the external interface generates an insertion signal so as to conduct the connection between the signal repeater and the first conversion module.
Optionally, a third terminal of the first switch is connected to a second signal conversion chip;
the first switch is further used for controlling the conduction of the first end and the third end of the first switch when the external interface does not generate an insertion signal so as to conduct the connection between the second signal conversion chip and the first conversion module.
According to another aspect of the present invention, there is provided an electronic device including the circuit board of the first aspect.
The embodiment of the utility model provides a circuit board and electronic equipment, this circuit board includes: master control chip and signal conversion equipment, signal conversion equipment includes: the signal conversion device comprises a signal repeater and a first signal conversion chip; the signal repeater is connected with the external interface and the first signal conversion chip and is used for sending the high-definition digital display interface standard type signals to be transmitted received from the external interface to the first signal conversion chip; and the first signal conversion chip is connected with the main control chip and is used for converting the signals to be transmitted of the standard types of the high-definition digital display interfaces into signals of the interface types of the mobile industry processor and outputting the signals to the main control chip. The problem that the main control chip can only input signals of specific types is solved, the signals to be transmitted are received through the external interface, the signals to be transmitted of the high-definition digital display interface standard type are sent to the first signal conversion chip through the signal repeater, the first signal conversion chip performs type conversion on the signals to be transmitted of the high-definition digital display interface standard type to obtain signals of the interface type of the mobile industrial processor and outputs the signals to the main control chip, the purpose of inputting the signals to be transmitted of the high-definition digital display interface standard type to the main control chip is achieved, the conversion of the signal types can be achieved through the first signal conversion chip, the signals which cannot be directly input to the main control chip are converted into the signals of the interface type of the mobile industrial processor, the input requirements of the main control chip on the signals of different types are met, and the application scenes of the main control chip are expanded.
It should be understood that the statements herein are not intended to identify key or critical features of any embodiment of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a circuit board according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a circuit board according to another embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In an embodiment, fig. 1 is a schematic structural diagram of a circuit board according to an embodiment of the present invention, as shown in fig. 1, the circuit board includes: main control chip 11 and signal conversion device 12, signal conversion device 12 includes: a signal repeater 121 and a first signal conversion chip 122;
the signal repeater 121 is connected to the external interface 21 and the first signal conversion chip 122, and is configured to send the to-be-transmitted signal of the high-definition digital display interface standard type received from the external interface 21 to the first signal conversion chip 122;
the first signal conversion chip 122 is connected to the main control chip 11, and is configured to convert each high-definition digital display interface standard type to-be-transmitted signal into a signal of a mobile industry processor interface type, and output the signal to the main control chip 11.
In this embodiment, the main control chip 11 and the signal conversion device 12 are integrated on a circuit board, and specifically, the circuit board provided in this embodiment is mainly used as a component in an electronic device in practical application. The main control chip 11 may be understood as a chip for performing information processing in an electronic device, the types of signals input by different types of chips may be different, and the requirements of the main control chip 11 on the types of input signals applied in different scenes may also be different. Taking the main control chip 11 as the QC865 as an example, based on some special scene restrictions of the industry, the main control chip 11 can only select the QC865, but the QC865 only has an MIPI CSI signal input interface and a DP OUT output interface, and does not have a direct HDMI OUT signal output and DP signal input interface, so that the DP signal input cannot be realized. The MIPI is a Mobile Industry Processor Interface (Mobile Industry Processor Interface), the DP is a High Definition digital display Interface standard (DisplayPort), and the HDMI is a High Definition Multimedia Interface (High Definition Multimedia Interface).
In the present embodiment, the signal conversion device 12 can be specifically understood as a device for implementing signal type conversion, and provides an input signal by converting the signal type into the main control chip 11. The first signal conversion chip 122 can be specifically understood as a chip for converting a signal type, which is used for converting a signal from one type to another type. The external interface 21 may be specifically understood as an interface for connecting an external device. A signal to be transmitted is understood to mean in particular a signal having transmission requirements. In this embodiment, the signal (i.e., DP signal) of the standard type of the high-definition digital display interface is a signal type that cannot be received by the main control chip 11, that is, the main control chip 11 does not have a corresponding interface to receive the DP signal; the interface type signal (i.e., MIPI signal) of the mobile industry processor is a signal type that the main control chip 11 can receive, and the main control chip 11 has a corresponding interface to receive the MIPI signal, so as to implement the input of the MIPI signal.
The signal repeater 121 is connected to the external interface 21 and the first signal conversion chip 122, the external interface 21 is connected to an external device to obtain a signal to be transmitted output by the external device, and transmit the received signal to be transmitted to the signal repeater 121 through a pin, the signal repeater 121 determines a signal type of the received signal to be transmitted, and transmits the signal to be transmitted in the DP type to the first signal conversion chip 122. The first signal conversion chip 122 performs signal type conversion on the received DP type signal to be transmitted to obtain an MIPI type signal, and outputs the MIPI type signal to the main control chip 11. The signal to be transmitted is converted by the signal repeater 121 and the first signal conversion chip 122, and the DP type signal to be transmitted is converted into the MIPI type signal and output to the main control chip 11, so that the input requirement of the main control chip 11 for the DP type signal is met.
The embodiment of the utility model provides a circuit board, the problem of master control chip can only input specific type signal is solved, wait to transmit the signal through external interface receipt, and will satisfy the waited transmission signal transmission of high definition digital display interface standard type and give first signal conversion chip through the signal repeater, first signal conversion chip carries out the type conversion to the waited transmission signal of high definition digital display interface standard type, obtain the signal of mobile industry processor interface type and export to master control chip, reach the waited transmission signal input to master control chip's purpose with high definition digital display interface standard type, can realize the conversion of signal type through first signal conversion chip, convert the signal that can't directly input to master control chip into the signal of mobile industry processor interface type that master control chip can receive, the input demand of master control chip to the signal of different grade type has been satisfied, master control chip's suitable scene has been expanded.
Fig. 2 is a schematic structural diagram of a circuit board according to another embodiment of the present invention, in which the embodiment refines the circuit board on the basis of the above embodiment, and refines the main control chip 11, and the main control chip 11 includes a first conversion module 111; the signal conversion device 12 is refined, and the signal conversion device 12 further includes: a power transmission controller 123. As shown in fig. 2:
the main control chip 11 includes a first conversion module 111;
the external interface 21 generates an insertion signal after being connected to the external terminal 31;
the main control chip 11 is connected with the external interface 21, and when an insertion signal generated by the external interface 21 is detected, the first conversion module 111 is configured as a first preset function;
the first conversion module 111 is connected to the signal repeater 121, and receives a first preset type of signal to be transmitted, which is transmitted by the signal repeater 121, after the first preset function is configured.
In this embodiment, the first conversion module 111 is used to implement conversion of data from a physical layer to a data layer; the external terminal 31 may be an intelligent terminal device such as a tablet computer, a mobile phone, a desktop computer, and a notebook computer. The insertion signal may be specifically understood as a signal indicating whether the external interface 21 is connected to the external terminal 31. The first predefined function may be understood in particular as a data processing function. The first predetermined type is a signal type that can be received by the first conversion module 111, and the first predetermined type is related to a first predetermined function.
When the external connection interface 21 is connected to the external terminal 31, an insertion signal is generated. After the main control chip 11 is connected to the external interface, it detects whether the external interface 21 generates an insertion signal, and configures the first conversion module 111 as a first preset function after detecting the insertion signal generated by the external interface 21, so that the first conversion module 111 receives a signal to be transmitted of a corresponding type. The external interface 21 is connected to the external terminal 31, receives a first preset type of signal to be transmitted acquired from the external terminal 31, and transmits the signal to the signal repeater 121. The first conversion module 111 is connected to the signal repeater 121, and after the first conversion module 111 is configured to have the first preset function, the first conversion module 111 receives the first preset type of signal to be transmitted, which is transmitted by the signal repeater 121. The external terminal 31 may transmit the DP type and the first preset type to-be-transmitted signal to the external interface at the same time, and after transmitting the DP type and the first preset type to the signal repeater 121 through the external interface, the signal repeater 121 transmits the DP type and the first preset type to the first signal conversion chip 122 and the first conversion module 111 according to the signal types.
Optionally, the first preset function is a universal serial bus function, and the first preset type is a universal serial bus type.
After detecting the insertion signal, the main control chip 11 configures the first conversion module 111 to have a universal serial bus function, so as to receive a signal to be transmitted of a universal serial bus type. Illustratively, the external interface may select a TYPE-C interface, where the generated insertion signal is a TYPE-C5V signal, the first preset function is a USB-3.0 function, and the signal to be transmitted of the USB TYPE is received.
Optionally, the signal repeater 121 is a multiplexer.
The signal repeater 121 in this application may adopt a multiplexer, and output the signal to be transmitted according to different signal types through the multiplexer, send the signal to be transmitted of the first preset type to the first conversion module 111 of the main control chip 11, and send the signal to be transmitted of the DP type to the first signal conversion chip 122, thereby achieving the purpose of signal splitting.
Optionally, the signal conversion device 12 further comprises: a power transmission controller 123;
and the power transmission controller 123 is connected with the external interface 21 and the signal repeater 121, and is configured to control a signal type of a signal transmitted by a pin of the external interface 21 according to the pin control information, and send the pin control information to the signal repeater 121.
In this embodiment, the power transmission controller 123 is a controller that controls the type of signal transmission of each pin of the external interface 21, and may be a chip. The pin control information may be specifically understood as information for controlling each pin of the external interface 21. The pin control information may be generated by the power transmission controller 123 itself according to a rule, may be received from an external transmission, or may be generated according to an external device or terminal protocol. The external interface 21 includes at least one pin, and when a plurality of pins are included, each pin may transmit different types of signals. The power transmission controller 123 controls the signal type of the signal transmitted by each pin of the external interface 21 according to the pin control information, for example, generates a control command according to the pin control information, and controls the signal type of the signal transmitted by each pin of the external interface 21 according to the control command. The power transmission controller 123 simultaneously sends the pin control information to the signal repeater 121, and the signal repeater 121 may determine a signal type of a signal transmitted by each pin of the external interface 21 according to the pin control information, so as to send the signal to be transmitted to the first signal conversion chip 122 or the first conversion module 111 according to the signal type.
Optionally, the power transfer controller 123 is connected to the external terminal 31 for communicating with the external terminal 31 and protocol generating the pin control information.
The power transmission controller 123 in this embodiment is connected to and communicates with the external terminal 31, and generates pin control information according to a protocol with the external terminal 31, so as to control the type of signals transmitted by each pin of the external interface 21 through the pin control information. The signal type of the signal transmitted by each pin of the external interface 21 is determined by the protocol, and the signal transmission process is flexible and variable.
Optionally, the main control chip 11 further includes a second conversion module 112;
when the main control chip 11 does not detect the insertion signal generated by the external interface 21, the first conversion module 111 and/or the second conversion module 112 are configured as a second preset function.
In this embodiment, the second conversion module 112 is used to implement the conversion of data from the physical layer to the data layer. The second preset function may be an output function of a certain type of signal. When the external interface 21 is connected to the external terminal 31, the external interface 21 does not generate an insertion signal, and when the main control chip 11 does not detect the insertion signal generated by the external interface 21, at least one of the first conversion module 111 and the second conversion module 112 is configured as a second preset function, so as to output a signal of a corresponding type.
Optionally, the circuit board further comprises: a second signal conversion chip 13;
the second signal conversion chip 13 is connected to the second conversion module 112, and is configured to convert the first to-be-transmitted signal output by the second conversion module 112 configured as the second preset function into a second preset type of signal and output the second preset type of signal.
In this embodiment, the first signal to be transmitted may be specifically understood as a signal output by the main control chip 11. The second preset type is generally a signal type that the main control chip 11 cannot output. The main control chip 11 outputs a first signal to be transmitted through the second conversion module 112 configured as a second preset function, the second conversion module 112 transmits the first signal to be transmitted to the second signal conversion chip 13, and the second signal conversion chip 13 converts the first signal to be transmitted into a second preset type of signal and outputs the second preset type of signal.
Optionally, the circuit board further comprises: a second signal conversion chip 13;
the second signal conversion chip 13 is connected to the first conversion module 111, and is configured to convert the second signal to be transmitted output by the first conversion module 111 configured as a second preset function into a second preset type of signal and output the second preset type of signal.
In this embodiment, the second signal to be transmitted is also an externally output signal of the main control chip 11, and the signal type of the second signal to be transmitted is the same as that of the first signal to be transmitted. The main control chip 11 outputs a second signal to be sent through the first conversion module 111 configured as a second preset function, the first conversion module 111 transmits the second signal to be sent to the second signal conversion chip 13, and the second signal conversion chip 13 converts the second signal to be sent into a second preset type of signal and outputs the second preset type of signal.
The first conversion module 111 in this embodiment can input a third preset type of signal to be transmitted and output a second signal to be transmitted, so as to implement pin sharing, reduce the number of pins of the main control chip 11, reduce cost, and save space.
The main control chip 11 can configure the first conversion module 111 and the second conversion module 112 as a second preset function, and simultaneously output the first signal to be transmitted and the second signal to be transmitted through the first conversion module 111 and the second conversion module 112, and the second signal conversion chip 13 converts the first signal to be transmitted and the second signal to be transmitted into a second preset type of signal and outputs the second preset type of signal. The first conversion module 111 and the second conversion module 112 output signals at the same time, so that the signal transmission performance is improved. When the first conversion module 111 and the second conversion module 112 send the first signal to be sent and the second signal to be sent outward, it is preferable to send data outward through two paths.
Optionally, the second preset function is a high-definition digital display interface standard function, and the second preset type is a high-definition multimedia interface type.
After the first conversion module 111 and the second conversion module 112 are configured to have the high-definition digital display interface standard function, the second signal to be transmitted output by the first conversion module 111 and the first signal to be transmitted output by the second conversion module 112 are DP type signals. After the first signal to be transmitted and the second signal to be transmitted in the DP type are input to the second signal conversion chip 13, the second signal conversion chip 13 converts the signals into signals in the high definition multimedia interface type (i.e., HDMI type) and outputs the signals, so as to output the HDMI type signals, and solve the problem that the main control chip 11 cannot output the HDMI signals.
Optionally, the circuit board further comprises: a first switch 14;
the first terminal z1 of the first switch 14 is connected to the first conversion module 111, and the second terminal z2 of the first switch 14 is connected to the signal repeater 121, so as to control the first terminal z1 and the second terminal z2 of the first switch 14 to be conducted after the external interface 21 generates the insertion signal, so as to conduct the connection between the signal repeater 121 and the first conversion module 111.
Specifically, the first terminal z1 of the first switch 14 is connected to the first conversion module 111, and the second terminal z2 of the first switch 14 is connected to the signal repeater 121, that is, the first conversion module 111 is connected to the signal repeater 121 through the first switch 14. The purpose of controlling the on-off between the first conversion module 111 and the signal repeater 121 is achieved by controlling the on-off of the first switch 14. After the external interface 21 generates the insertion signal, at this time, the signal repeater 121 needs to send a third preset type of signal to be transmitted to the first conversion module 111, so that the first end z1 and the second end z2 of the first switch 14 are controlled to be conducted, and the connection between the signal repeater 121 and the first conversion module 111 is achieved.
Optionally, the third terminal z3 of the first switch 14 is connected to the second signal conversion chip 13;
the first switch 14 is further configured to control the first terminal z1 and the third terminal z3 of the first switch 14 to be conducted to conduct the connection between the second signal conversion chip 13 and the first conversion module 111 when the external interface 21 does not generate the insertion signal.
Specifically, the third end z3 of the first switch 14 is connected to the second signal conversion chip 13, that is, the first conversion module 111 is connected to the second signal conversion chip 13 through the first switch 14, and the purpose of controlling the on/off between the second signal conversion chip 13 and the first conversion module 111 is achieved by controlling the on/off between the first end z1 and the third end z3 of the first switch 14. When the external interface 21 does not generate an insertion signal, at this time, the main control chip 11 sends a second signal to be sent to the second signal conversion chip 13 through the first conversion module 111, so as to control the first terminal z1 and the third terminal z3 of the first switch 14 to be conducted, thereby implementing the conduction of the connection between the second signal conversion chip 13 and the first conversion module 111.
For example, taking the main control chip 11 as QC865 and the external interface 21 as a TYPE-C interface, the TYPE-C interface simultaneously supports 4K/30HZ DP signal input and USB3.0 Device output. Because the QC865 only has an MIPI CSI signal input interface and a DP OUT output interface, and there is no direct HDMI OUT signal output and DP signal input interface, when an actual project only selects the main control chip 11 of the QC865, and a DP signal needs to be input, or an HDMI signal needs to be output, the main control chip 11 cannot meet the requirements. In order TO realize DP signal input and HDMI signal output of the main control chip 11, the first signal conversion chip 122 selects a DP TO MIPI chip, and the second signal conversion chip 13 selects a DP TO HDMI chip; the first preset function is a USB3.0 function; the second preset function is a DP signal output function. The first preset type is a USB3.0 type, and the second preset type is an HDMI type. The first signal to be transmitted and the second signal to be transmitted are of the DP type. The signal repeater 121 employs a multiplexer.
After the TYPE-C interface is connected to the external terminal 31, the main control chip 11 detects a TYPE-C5V insertion signal, configures the first conversion module 111 as a USB3.0 function, and controls the first end z1 and the second end z2 of the first switch 14 to be conducted, so as to connect the multiplexer 121 and the first conversion module 111. The TYPE-C interface acquires the DP signal and the USB3.0 signal from the external terminal 31, and transmits the DP signal and the USB3.0 signal to the multiplexer 121 through corresponding pins, respectively. The multiplexer 121 sends the DP signal TO the DP TO MIPI chip, the DP TO MIPI chip converts the DP TO MIPI signal into the MIPI signal, and sends the MIPI signal TO the main control chip 11QC865, thereby realizing the input of the DP signal. The multiplexer 121 transmits the USB3.0 signal to the first conversion module 111, and realizes input of the USB3.0 signal.
When the TYPE-C interface is not connected TO the external terminal 31, the first conversion module 111 and the second conversion module 112 are configured TO have a DP signal output function, and the first terminal z1 and the third terminal z3 of the first switch 14 are controlled TO be connected, so that the connection between the DP TO HDMI chip and the first conversion module 111 is realized. The second signal TO be transmitted is output through the first conversion module 111, and the first conversion module 111 transmits the second signal TO be transmitted TO the DP TO HDMI chip. The first signal TO be transmitted is output through the second conversion module 112, and the second conversion module 112 transmits the first signal TO be transmitted TO the DP TO HDMI chip. And the DP TO HDMI chip converts the first signal TO be transmitted and the second signal TO be transmitted into HDMI signals and outputs the HDMI signals.
The embodiment can realize the HDMI OUT function interface of 4K/60HZ by the DP TO HDMI chip. The circuit board provided by the embodiment can be applied to an audio and video conference terminal to realize input and output processing of audio and video signals.
The embodiment of the utility model provides a circuit board refines main control chip to including first conversion module and second conversion module, and first conversion module both can input the first waiting to transmit signal of predetermineeing the type, can export first waiting to send the signal again, realizes the pin sharing. The first conversion module and the second conversion module send signals to the second signal conversion chip, and the second signal conversion chip converts signal types to realize signal output of a second preset type, so that the problem that the main control chip can only input and output signals of specific types is solved, and the purposes of inputting signals to be transmitted of DP types and first preset types to the main control chip and outputting signals of the second preset type outwards are achieved. The conversion of signal types can be realized through the first signal conversion chip and the second signal conversion chip, the signals which cannot be directly input to the main control chip are converted into MIPI signals which can be received by the main control chip, and the signals of the second preset type which cannot be output by the main control chip are output outwards, so that the input and output requirements of the main control chip on the signals of different types are met, and the applicable scene of the main control chip is expanded. Different work scenes are switched through the first switch, the use process is flexible, and the practicability is stronger.
In an embodiment, the utility model also provides an electronic equipment, it includes an above-mentioned arbitrary circuit board, through the use of above-mentioned circuit board, can satisfy the input and the output demand to the signal of different grade type, has expanded main control chip's suitable scene.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (13)
1. A circuit board, comprising: main control chip and signal conversion device, signal conversion device includes: the signal conversion device comprises a signal repeater and a first signal conversion chip;
the signal repeater is connected with an external interface and the first signal conversion chip and is used for sending the high-definition digital display interface standard type signals to be transmitted received from the external interface to the first signal conversion chip;
the first signal conversion chip is connected with the main control chip and used for converting the signals to be transmitted of the high-definition digital display interface standard types into signals of the mobile industry processor interface types and outputting the signals to the main control chip.
2. The circuit board of claim 1, wherein the main control chip comprises a first conversion module;
the external interface generates an insertion signal after being connected with an external terminal;
the main control chip is connected with the external interface, and the first conversion module is configured to be a first preset function after an insertion signal generated by the external interface is detected;
the first conversion module is connected with the signal repeater and receives a first preset type of signal to be transmitted by the signal repeater after the first conversion module is configured to have a first preset function.
3. The circuit board of claim 2, wherein the first predetermined function is a universal serial bus function and the first predetermined type is a universal serial bus type.
4. The circuit board of claim 2, wherein the signal repeater is a multiplexer.
5. The circuit board according to claim 1 or 2, wherein the signal conversion device further comprises: a power transmission controller;
the power transmission controller is connected with the external interface and the signal repeater and used for controlling the signal type of the signal transmitted by the pin of the external interface according to the pin control information and sending the pin control information to the signal repeater.
6. The circuit board of claim 5, wherein the power transfer controller is coupled to an external terminal for communicating with the external terminal and for protocol generating pin control information.
7. The circuit board of claim 2, wherein the main control chip further comprises a second conversion module;
and when the main control chip does not detect the insertion signal generated by the external interface, the first conversion module and/or the second conversion module are configured to be a second preset function.
8. The circuit board of claim 7, further comprising: a second signal conversion chip;
the second signal conversion chip is connected to the second conversion module, and is configured to convert the first to-be-transmitted signal output by the second conversion module configured as the second preset function into a second preset type of signal and output the second preset type of signal.
9. The circuit board of claim 7, further comprising: a second signal conversion chip;
the second signal conversion chip is connected to the first conversion module, and is configured to convert a second signal to be transmitted, which is output by the first conversion module configured as the second preset function, into a second preset type of signal and output the second preset type of signal.
10. The circuit board of claim 8 or 9, wherein the second predetermined function is a high definition digital display interface standard function, and the second predetermined type is a high definition multimedia interface type.
11. The circuit board of claim 9, further comprising: a first switch;
the first end of the first switch is connected with the first conversion module, and the second end of the first switch is connected with the signal repeater and used for controlling the conduction of the first end and the second end of the first switch after the external interface generates the insertion signal so as to conduct the connection between the signal repeater and the first conversion module.
12. The circuit board of claim 11, wherein the third terminal of the first switch is connected to the second signal conversion chip;
the first switch is further configured to control the first end and the third end of the first switch to be conducted when the external interface does not generate an insertion signal, so as to conduct the connection between the second signal conversion chip and the first conversion module.
13. An electronic device, characterized in that it comprises a circuit board according to any one of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221608494.8U CN217690062U (en) | 2022-06-23 | 2022-06-23 | Circuit board and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221608494.8U CN217690062U (en) | 2022-06-23 | 2022-06-23 | Circuit board and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN217690062U true CN217690062U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221608494.8U Active CN217690062U (en) | 2022-06-23 | 2022-06-23 | Circuit board and electronic equipment |
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| Country | Link |
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| CN (1) | CN217690062U (en) |
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