CN111104354A - Digital audio-video connector and interface thereof - Google Patents
Digital audio-video connector and interface thereof Download PDFInfo
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- CN111104354A CN111104354A CN201911329541.8A CN201911329541A CN111104354A CN 111104354 A CN111104354 A CN 111104354A CN 201911329541 A CN201911329541 A CN 201911329541A CN 111104354 A CN111104354 A CN 111104354A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0002—Serial port, e.g. RS232C
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0004—Parallel ports, e.g. centronics
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0016—Inter-integrated circuit (I2C)
Abstract
The embodiment of the invention relates to a digital audio and video connector and an interface thereof, which comprise at least two groups of RGB parallel buses and a group of I2S buses; each group of RGB parallel buses is used for a transmission channel of video data, each group of RGB parallel buses comprises at least 24 first pins, and a signal on each first pin defines an RGB data parallel bus containing 24-bits and a 24-bits YCbCr data parallel bus; the I2S bus is used for the transmission channel of audio data, and the I2S bus comprises at least 13 second pins. The input and output of the interface of the digital audio and video connector are set according to the functions through the parallel bus signal functions of the first pin of the defined RGB parallel bus and the second pin of the I2S bus, so that the interface of the digital audio and video connector can be suitable for the input and output of various audio and video signals, the compatibility of the interface of the digital audio and video connector is widened, and the universality is strong.
Description
Technical Field
The invention relates to the technical field of video interfaces, in particular to a digital audio and video connector and an interface thereof.
Background
The main function of the video interface is to output video signals to an external device or collect externally captured video signals. With the continuous development of video technology, people adopt various types of video interfaces in order to present videos with high definition and good quality. At the same time, the role of video interfaces is constantly being enriched.
In products in the field of audio and image processing, a front-end acquisition input interface or a rear-end processing output interface generally comprises different types of video interfaces such as SDI, VGA, DisplayPort, HDMI and DVI, and after decoding output or encoding input is completed by the different types of video interfaces, the different types of video interfaces are connected to a video interface image processing chip (SoC, FPGA and DSP) and adopt parallel buses such as RGB, YCbCr and BT.1120 to perform data transmission.
At present, corresponding to products with different requirements, a video interface module and an image processing module are integrated on the same PCB substrate, and the situations are as follows:
firstly, under the conditions of video interface type change, interface quantity increase and decrease, interface layout adjustment and the like, the design of the whole PCB substrate needs to be modified, so that the development period of a video interface is long, the developed product has repeated working contents, and the product cost is correspondingly increased;
secondly, under the conditions of specification upgrade, product iteration, scheme replacement and the like of an image processing chip (SoC, FPGA, DSP) of an image processing module in the video interface, the internal design of the image processing module circuit needs to be modified, and the originally collocated video interface module also needs to be correspondingly adjusted because the universality and compatibility are not considered in advance, so that the whole PCB substrate needs to be improved, and the manufacturing cost of the video interface is increased.
Therefore, in view of the above situation, how to improve the versatility and compatibility of the video interface becomes an important technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a digital audio and video connector and an interface thereof, which are used for solving the technical problem that the cost for manufacturing a video interface is increased due to poor universality and compatibility of the conventional video interface.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
an interface of a digital audio-video connector comprises at least two groups of RGB parallel buses and a group of I2S buses;
each group of RGB parallel buses is used for a transmission channel of video data, each group of RGB parallel buses comprises at least 24 first pins, and a signal on each first pin defines an RGB data parallel bus containing 24-bits and a 24-bits YCbCr data parallel bus;
the I2S bus is used for transmission channel of audio data, and the I2S bus comprises at least 13 second pins.
Preferably, each set of said RGB parallel buses comprises a first RGB parallel bus, a second RGB parallel bus and a third RGB parallel bus;
the signal definition on each first pin on the first RGB parallel bus comprises a B component of a 24-bits RGB data parallel bus and a CbCr component of a 24-bits YCbCr data parallel bus;
the signal definition on each first pin on the second RGB parallel bus comprises a G component of a 24-bits RGB data parallel bus and a Y component and a CbCr component of a 24-bits YCbCr data parallel bus;
and the signal definition on each first pin of the third RGB parallel bus comprises an R component of a 24-bits RGB data parallel bus and a Y component of a 24-bits YCbCr data parallel bus.
Preferably, on said first RGB parallel bus, B [7:0] of said B component, CbCr [7:0] of said CbCr component; on the second RGB parallel bus, G [7:0] of the G component, Y [3 ] of the Y component: 0], CbCr [11:8] of the CbCr component; on the third RGB parallel bus, R [7:0] of the R component, Y [11 ] of the Y component: 4].
Preferably, the RGB parallel bus for each group of 24 pins includes a YCbCr data parallel bus for the first 16 pins.
Preferably, one set of the RGB parallel buses in the interface of the digital audio/video connector is an input RGB parallel bus, and the other set of the RGB parallel buses is an output RGB parallel bus.
Preferably, the I2S bus includes a first I2S bus, a second I2S bus, and a third I2S bus; the first I2S bus is used for the transmission of input audio data; the second I2S bus is used for transmission of output audio data; the third I2S bus is used for connecting with an audio decoding chip.
Preferably, the first I2S bus and the second I2S bus each include at least 4 of the second pins, the signals of the 4 second pins being defined as a master clock signal, a bit clock signal, a data signal, and left and right channel acquisition clock signals, respectively;
the third I2S bus includes at least 5 second pins, and signals of the 5 second pins are defined as a master clock signal, a bit clock signal, an input data signal, an output data signal, and left and right channel acquisition clock signals, respectively.
Preferably, at least 160 pins are arranged on an interface of the digital audio/video connector, and the distance between every two pins is 0.8 mm.
Preferably, the interface of the digital audio/video connector further includes a UART serial port channel, an I2C bus channel, an SPI bus channel, an I/O channel, and a power connection channel.
The invention also provides a digital audio-video connector, which comprises a board-to-board connector with the interface of the digital audio-video connector, and a video receiving module, a video sending module and an audio coding and decoding module which are connected with the board-to-board connector;
the video receiving module is used for connecting the acquired first video signal with a first video connector and transmitting the first video signal to the board-to-board connector;
the video sending module is used for being connected with a second video connector and acquiring a second video signal matched with and output by the second video connector from the board-to-board connector;
and the audio coding and decoding module is used for being connected with an audio interface to acquire an audio signal and transmitting the audio signal to the board-to-board connector.
According to the technical scheme, the embodiment of the invention has the following advantages:
the interface of the digital audio and video connector sets the input and output of the interface of the digital audio and video connector according to the function through the parallel bus signal function of the first pins of two groups of RGB parallel buses and the second pin of one group of I2S buses, so that the interface of the digital audio and video connector can be suitable for the input and output of various audio and video signals, the compatibility of the interface of the digital audio and video connector is widened, and the universality of the interface of the digital audio and video connector is high. The technical problem that the cost for manufacturing the video interface is increased due to poor universality and compatibility of the existing video interface is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a block diagram of a digital audio/video connector according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of a digital audio/video connector according to the present invention.
Fig. 3 is a pin definition diagram of an interface of a digital audio/video connector according to an embodiment of the invention.
Fig. 4 is a pin diagram of the digital audio/video connector according to the embodiment of the present invention, in which the interface is divided into two interfaces.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in 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 embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the application provides a digital audio and video connector and an interface thereof, which are used for solving the technical problem that the cost for manufacturing a video interface is increased due to poor universality and compatibility of the conventional video interface.
The first embodiment is as follows:
fig. 1 is a block diagram of a digital audio/video connector according to an embodiment of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a digital audio/video connector, which includes a board-to-board connector, and a video receiving module, a video sending module, and an audio encoding and decoding module connected to the board-to-board connector;
the video receiving module is used for connecting the acquired first video signal with the first video connector and transmitting the first video signal to the board-to-board connector;
the video sending module is used for being connected with the second video connector and acquiring a second video signal which is matched and output with the second video connector from the board-to-board connector;
and the audio coding and decoding module is used for being connected with the audio interface to acquire an audio signal and transmitting the audio signal to the board-to-board connector.
In the embodiment of the invention, an interface of the digital audio and video connector is arranged on the board-to-board connector, and a plurality of video signal transmission channels are arranged on the interface of the digital audio and video connector.
It should be noted that the interfaces on the first video connector and the second video connector may be DVI-D type interfaces, and may also be HDMI interfaces, SDI interfaces, DP interfaces, VGA interfaces, and the like. The first video signal and the second video signal may be VS signals, HS signals, DE signals, PCLK signals, or the like. In the prior art, when the video receiving module receives a first video signal of the first video connector as a VS signal and an output signal of the second video connector is a PCLK signal, the first video connector cannot be directly connected to the second video connector, and a second video connector matching with the first video connector needs to be manufactured again, which results in high manufacturing cost.
In this embodiment, one board-to-board connector may be provided on the digital audio/video connector, or a board-to-board connector composed of two interfaces may be provided. As shown in fig. 2, the board-to-board connector is a board-to-board connector composed of two interfaces, Part-a and Prat-B. Fig. 2 is a schematic structural diagram of an embodiment of a digital audio/video connector according to an embodiment of the present invention.
Example two:
in this embodiment, the described bus may be a parallel bus or a serial bus.
Fig. 3 is a pin definition diagram of an interface of a digital audio/video connector according to an embodiment of the present invention, and fig. 4 is a pin diagram of an interface of a digital audio/video connector according to an embodiment of the present invention divided into two interfaces.
As shown in fig. 3, an embodiment of the present invention provides an interface of a digital audio/video connector, which includes at least two sets of RGB parallel buses and a set of I2S buses:
each group of RGB parallel buses is used for a transmission channel of video data, each group of RGB parallel buses comprises at least 24 first pins, and a signal on each first pin defines an RGB data parallel bus containing 24-bits and a 24-bits YCbCr data parallel bus;
the I2S bus is used for the transmission channel of audio data, and the I2S bus comprises at least 13 second pins.
The definition of each pin signal defined on the interface of the digital audio and video connector provided by the embodiment of the invention is also suitable for the communication interface connected with the video interface connector, and when the interface of the digital audio and video connector and various communication interfaces interactively transmit signal information, the digital audio and video connector conforms to sufficient expansibility, wide compatibility and flexible reusability.
In this embodiment, at least 160 pins are provided on the interface of the digital audio/video connector, 24 first pins are provided on each set of RGB parallel bus, and a signal on each first pin defines a transmission channel including a 24-bits RGB data parallel bus and a 24-bits YCbCr data parallel bus. The I2S bus includes at least 13 second pins, and the signal on each second pin defines a transmission channel for audio data.
It should be noted that each first pin is provided with a video data parallel bus for outputting or outputting different function signal definitions, and each second pin is provided with a bus for inputting or outputting different function signal definition audio data. And 24 first pins on each group of RGB parallel buses, wherein the RGB parallel buses with 24 pins in each group comprise YCbCr data parallel buses with 16 first pins. The distance between every two pins is 0.8 mm.
The interface of the digital audio and video connector provided by the invention sets the input and output of the interface of the digital audio and video connector according to the function through the parallel bus signal function of the first pins of two groups of RGB parallel buses and the second pin of one group of I2S buses, so that the interface of the digital audio and video connector can be suitable for the input and output of various audio and video signals, the compatibility of the interface of the digital audio and video connector is widened, and the universality of the interface of the digital audio and video connector is strong. The technical problem that the cost for manufacturing the video interface is increased due to poor universality and compatibility of the existing video interface is solved.
As shown in fig. 3, in one embodiment of the present invention, one set of RGB parallel buses in the interface of the digital av connector is an input RGB parallel bus HDMI-0, and the other set of RGB parallel buses is an output RGB parallel bus HDMI-1. Each set of RGB parallel buses includes a first RGB parallel bus, a second RGB parallel bus, and a third RGB parallel bus.
On the input RGB parallel bus HDMI-0, the signal definition on each first pin on the first RGB parallel bus comprises a B component of a 24-bits RGB data parallel bus and a CbCr component of a 24-bits YCbCr data parallel bus. Wherein, on the first RGB parallel bus, B [7:0] of the B component, CbCr [7:0] of the CbCr component. The definition of the signal on each first pin of the second RGB parallel bus comprises a G component of the 24-bits RGB data parallel bus and a Y component and a CbCr component of the 24-bits YCbCr data parallel bus. Wherein, on the second RGB parallel bus, G [7:0] of the G component, Y [3 ] of the Y component: 0], CbCr [11:8] of the CbCr component. The definition of the signal on each first pin of the third RGB parallel bus comprises an R component of a 24-bits RGB data parallel bus and a Y component of a 24-bits YCbCr data parallel bus. Wherein, on the third RGB parallel bus, R [7:0] of the R component, Y [11 ] of the Y component: 4]. In this embodiment, 8 first pins are provided on the first RGB parallel bus, and the serial numbers of the 160 pins of the interface of the digital audiovisual connector are 4, 6, 8, 10, 12, 14, 16 and 18. 8 first pins are arranged on the second RGB parallel bus, and the serial numbers of 160 pins of the interface of the digital audio and video connector are 22, 24, 26, 28, 30, 32, 34 and 36. The third RGB parallel bus is also provided with 8 first pins numbered 40, 42, 44, 46, 48, 50, 52 and 54 at 160 pins of the interface of the digital audiovisual connector.
Note that [7:0] is described]And [11:0]The serial number of the signal pin is represented, and the serial number is also a numerical value of a binary counting method. R is the Red component of image Red, R [7:0]Representing 8-bit binary digits, i.e. 28The red component may be divided into 256 levels; y [ 3: 0]Representing 8-bit binary digits, 24The luminance component may be divided into 16 levels; the same way G is Green component; b is Blue component; y is the Luminance component of luminence; cb is the blue portion of the chroma color difference component; cr is the red part of the chroma color difference component. CbCr [11:8] as described]8 th bit to 11 th bit representing color difference components, the total color gradation being 212＝4096；Y[11：4]Bit 4 to bit 11 representing the luminance component, the total luminance gradation being 212＝4096。
In the embodiment of the invention, the interface of the digital audio and video connector is also provided with a pixel clock of a parallel data bus for inputting RGB parallel bus HDMI-0, a line synchronization signal of the parallel data bus, a field synchronization signal of the parallel data bus, a data enable signal of the parallel data bus, a special reset signal of an encoding or decoding chip and an interrupt report signal of the encoding or decoding chip, wherein the serial numbers of the signals in 160 pins are 58, 62, 64, 66, 102 and 106.
On the output RGB parallel bus HDMI-1, the signal definition on each first pin on the first RGB parallel bus comprises a B component of a 24-bits RGB data parallel bus and a CbCr component of a 24-bits YCbCr data parallel bus. Wherein, on the first RGB parallel bus, B [7:0] of the B component, CbCr [7:0] of the CbCr component. The definition of the signal on each first pin of the second RGB parallel bus comprises a G component of the 24-bits RGB data parallel bus and a Y component and a CbCr component of the 24-bits YCbCr data parallel bus. Wherein, on the second RGB parallel bus, G [7:0] of the G component, Y [3 ] of the Y component: 0], CbCr [11:8] of the CbCr component. The definition of the signal on each first pin of the third RGB parallel bus comprises an R component of a 24-bits RGB data parallel bus and a Y component of a 24-bits YCbCr data parallel bus. Wherein, on the third RGB parallel bus, R [7:0] of the R component, Y [11 ] of the Y component: 4]. In this embodiment, 8 first pins are provided on the first RGB parallel bus, and the serial numbers of the 160 pins of the interface of the digital audiovisual connector are 13, 15, 17, 19, 21, 23, 25 and 27. 8 first pins are arranged on the second RGB parallel bus, and the serial numbers of 160 pins of the interface of the digital audio and video connector are 31, 33, 35, 37, 39, 41, 43 and 45. The third RGB parallel bus is also provided with 8 first pins, and the 160 pins of the interface of the digital audiovisual connector have serial numbers 49, 51, 53, 55, 57, 59, 61 and 63.
In the embodiment of the invention, the interface of the digital audio and video connector is also provided with a pixel clock for outputting a parallel data bus of an RGB parallel bus HDMI-1, a line synchronization signal of the parallel data bus, a field synchronization signal of the parallel data bus, a data enable signal of the parallel data bus, a special reset signal of an encoding or decoding chip and an interrupt report signal of the encoding or decoding chip, wherein the serial numbers of the signals in 160 pins correspond to 67, 71, 73, 75, 100 and 108.
In an embodiment of the present invention, the I2S buses include a first I2S bus, a second I2S bus, and a third I2S bus.
Wherein, the first I2S bus is used for the transmission of input audio data; the first I2S bus is provided with 4 second pins, and signals of the 4 second pins are defined as a main clock signal, a bit clock signal, a data signal and left and right channel acquisition clock signals, respectively.
In the serial numbers of the 160 pins of the interface of the digital audio/video connector, the serial number of the master clock signal is 76, the serial number of the bit clock signal is 74, the serial number of the data signal is 72, and the serial numbers of the left and right channel acquisition clock signals are 70.
The second I2S bus is used for the transmission of output audio data; the first I2S bus and the second I2S bus each include at least 4 second pins, and signals of the 4 second pins are defined as a master clock signal, a bit clock signal, a data signal, and left and right channel acquisition clock signals, respectively.
In the serial numbers of the 160 pins of the interface of the digital audio/video connector, the serial number of the master clock signal is 3, the serial number of the bit clock signal is 5, the serial number of the data signal is 7, and the serial numbers of the left and right channel acquisition clock signals are 9.
The third I2S bus is used to connect with the audio decoding chip, the third I2S bus includes at least 5 second pins, and the signals of the 5 second pins are defined as the main clock signal, the bit clock signal, the input data signal, the output data signal and the left and right channel acquisition clock signal, respectively.
In the serial numbers of the 160 pins of the interface of the digital audio/video connector, the serial number of the master clock signal is 84, the serial number of the bit clock signal is 86, the serial number of the input data signal is 90, the serial number of the output data signal is 92, and the serial numbers of the left and right channel acquisition clock signals are 88.
In the embodiment of the invention, the interface of the digital audio and video connector further comprises a UART serial port channel, an I2C bus channel, an SPI bus channel, an I/O channel and a power connection channel.
The UART serial port channel is mainly used for sending or receiving data. In this embodiment, among the serial numbers of the 160 pins of the interface of the digital audio/video connector, the serial number for data transmission of the UART serial port channel is 97, and the serial number for data reception of the UART serial port channel is 99.
The I2C bus channel is mainly used for inputting clock signals and transmitting and receiving data. In this embodiment, the serial number of the clock input of the I2C bus channel is 81, and the serial number of the data transmission and reception of the I2C bus channel is 83 among the serial numbers of the 160 pins of the interface of the digital av connector.
The SPI bus channel is mainly used for conversion between reception and transmission of data and selection of clock input and devices. In this embodiment, among the serial numbers of the 160 pins of the interface of the digital audio/video connector, the serial number of the master transmission slave reception of the SPI bus channel is 87, the serial number of the clock input of the SPI bus channel is 89, the serial number of the device chip select of the SPI bus channel is 91, and the serial number of the master reception slave transmission of the SPI bus channel is 93.
The I/O channel is mainly used for connecting the input/output interface. In this embodiment, among the serial numbers of the 160 pins of the interface of the digital audiovisual connector, the serial number of the primary general purpose input/output interface 0 of the I/O channel is 96, and the serial number of the primary general purpose input/output interface 1 of the I/O channel is 98.
The power supply connecting channel is mainly used for a power supply input interface and comprises a digital power supply reference ground channel, a 1.8V analog power supply input and audio signal special channel, a 1.8V digital power supply input channel, a 3.3V digital power supply input channel and a 12V digital power supply input channel. The serial numbers of the digital power reference ground channels at 160 pins include 1, 2, 11, 20, 29, 38, 47, 56, 60, 65, 68, 69, 77, 78, 79, 82, 85, 94, 95, 101, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148 and 159. The 1.8V analog power input and audio signal dedicated channels include 152, 154, 156, and 158 at 160 pin numbers. The serial number of the 1.8V digital power input channel at 160 pins comprises 139, 141, 143, 145, 147, 149, 151, 153, 155 and 157. The 3.3V digital power input channel includes 121, 123, 125, 127, 129, 131, 133 and 135 at the serial number of 160 pins. The serial numbers of the 12V digital power input channels at 160 pins comprise 103, 105, 107, 109, 111, 113, 115 and 117.
In the embodiment of the present invention, a reset dedicated signal of the audio codec chip, an interrupt report signal of the audio codec chip, a board connector board detection signal 0, and a board connector board detection signal 1 are further provided on the interface of the digital audio/video connector, and their serial numbers in 160 pins correspond to 104, 110, 80, and 160.
Corresponding to products with different specific requirements, under the conditions of type change, interface quantity increase and decrease or interface layout adjustment and the like of the digital audio and video connector, the definition of pins on the interface of the digital audio and video connector is kept consistent, and the required products can be met only by modifying the design of the shell of the digital audio and video connector. The interface of the digital audio/video connector described above in the embodiments of the present invention can conveniently and reliably implement the following common type of digital video interface function combinations, as shown in the following table.
The interface transmission of the digital audio/video connector provided by the embodiment of the invention has a bidirectional transmission function, and whether the interface pin is used for transmitting or receiving is determined according to requirements.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An interface of a digital audio-video connector is characterized by comprising at least two groups of RGB parallel buses and a group of I2S buses;
each group of RGB parallel buses is used for a transmission channel of video data, each group of RGB parallel buses comprises at least 24 first pins, and a signal on each first pin defines an RGB data parallel bus containing 24-bits and a 24-bitsYCbCr data parallel bus;
the I2S bus is used for transmission channel of audio data, and the I2S bus comprises at least 13 second pins.
2. The interface for a digital audiovisual connector according to claim 1, wherein each set of said RGB parallel buses comprises a first RGB parallel bus, a second RGB parallel bus, and a third RGB parallel bus;
the signal definition on each first pin on the first RGB parallel bus comprises a B component of a 24-bits RGB data parallel bus and a CbCr component of a 24-bits YCbCr data parallel bus;
the signal definition on each first pin on the second RGB parallel bus comprises a G component of a 24-bits RGB data parallel bus and a Y component and a CbCr component of a 24-bits YCbCr data parallel bus;
and the signal definition on each first pin of the third RGB parallel bus comprises an R component of a 24-bits RGB data parallel bus and a Y component of a 24-bits YCbCr data parallel bus.
3. The interface of digital audiovisual connector according to claim 2, characterized in that on said first RGB parallel bus, B [7:0] of said B component, CbCr [7:0] of said CbCr component;
on the second RGB parallel bus, G [7:0] of the G component, Y [3 ] of the Y component: 0], CbCr [11:8] of the CbCr component;
on the third RGB parallel bus, R [7:0] of the R component, Y [11 ] of the Y component: 4].
4. The interface for a digital audio-visual connector according to claim 1, characterized in that said RGB parallel bus for each group of 24 pins comprises a YCbCr data parallel bus for the first 16 pins.
5. The interface of a digital audio-video connector according to claim 1, wherein one set of the RGB parallel buses in the interface of the digital audio-video connector is an input RGB parallel bus, and the other set of the RGB parallel buses is an output RGB parallel bus.
6. The digital audiovisual connector interface of claim 5, wherein the I2S bus comprises a first I2S bus, a second I2S bus, and a third I2S bus;
the first I2S bus is used for the transmission of input audio data;
the second I2S bus is used for transmission of output audio data;
the third I2S bus is used for connecting with an audio decoding chip.
7. The interface of digital audio-video connector according to claim 6, wherein each of the first I2S bus and the second I2S bus comprises at least 4 of the second pins, the signals of the 4 second pins being defined as a master clock signal, a bit clock signal, a data signal and a left-right channel acquisition clock signal;
the third I2S bus includes at least 5 second pins, and signals of the 5 second pins are defined as a master clock signal, a bit clock signal, an input data signal, an output data signal, and left and right channel acquisition clock signals, respectively.
8. The interface of the digital audio/video connector according to claim 1, wherein at least 160 pins are arranged on the interface of the digital audio/video connector, and the distance between every two pins is 0.8 mm.
9. The interface of the digital audio-video connector according to claim 1, wherein the interface of the digital audio-video connector further comprises a UART serial port channel, an I2C bus channel, an SPI bus channel, an I/O channel, and a power connection channel.
10. A digital av connector comprising a board-to-board connector having an interface of the digital av connector of any one of claims 1 to 9 and a video receiving module, a video transmitting module and an audio codec module connected to the board-to-board connector;
the video receiving module is used for connecting the acquired first video signal with a first video connector and transmitting the first video signal to the board-to-board connector;
the video sending module is used for being connected with a second video connector and acquiring a second video signal matched with and output by the second video connector from the board-to-board connector;
and the audio coding and decoding module is used for being connected with an audio interface to acquire an audio signal and transmitting the audio signal to the board-to-board connector.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329541.8A CN111104354B (en) | 2019-12-20 | 2019-12-20 | Digital audio-video connector and interface thereof |
| PCT/CN2020/141511 WO2021121432A1 (en) | 2019-12-20 | 2020-12-30 | Digital audio and video connector and interface thereof |
Applications Claiming Priority (1)
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| CN201911329541.8A CN111104354B (en) | 2019-12-20 | 2019-12-20 | Digital audio-video connector and interface thereof |
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| WO2021121432A1 (en) * | 2019-12-20 | 2021-06-24 | 威创集团股份有限公司 | Digital audio and video connector and interface thereof |
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| WO2021121432A1 (en) | 2021-06-24 |
| CN111104354B (en) | 2022-03-22 |
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