CN204157019U - Audio decoder chip and electronic equipment - Google Patents
Audio decoder chip and electronic equipment Download PDFInfo
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- CN204157019U CN204157019U CN201420596226.8U CN201420596226U CN204157019U CN 204157019 U CN204157019 U CN 204157019U CN 201420596226 U CN201420596226 U CN 201420596226U CN 204157019 U CN204157019 U CN 204157019U
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Abstract
The utility model provides a kind of audio decoder chip and electronic equipment, audio decoder chip comprises packaging body and Master control chip, packaging body has eight pins, each root pin is electrically connected with Master control chip respectively, wherein, eight pins comprise three signal of communication pins, first signal of communication pin is the common pin connecting SD card interface module and FM module, second communication signal pins is the common pin connecting usb interface module and SD card interface module, third communication signal pins is for connecting usb interface module, the common pin of SD card interface module and FM module, eight pins also comprise audio signal pin and control signal pin, audio signal pin is that audio signal exports the multiplexing pins inputted with microphone audio signal, control signal pin is the common pin connecting button and indicator light.Electronic equipment has above-mentioned audio decoder chip.Audio decoder chip pin data of the present utility model are few, small volume, reduce the production cost of electronic equipment.
Description
Technical field
The utility model relates to integrated circuit fields, particularly, is a kind ofly be applied to the audio decoder chip of electronic equipment and have the electronic equipment of this audio decoder chip.
Background technology
Present electronics is arranged, audio-frequence player device, mobile phone, the panel computers etc. such as such as MP3 music player are energy audio plays all, these electronic equipments are equipped with audio decoder chip and audio signal output circuit, the voice data decoding that audio decoder chip will receive, and exported to the equipment of the such as audio plays such as earphone, loud speaker by audio signal output circuit.
Card-inserted sound box is a kind of audio amplifier with audio decoder chip, can insert the external memory such as SD card, USB flash disk, and be provided with FM module due to it, therefore can receive multiple audio signal input and very popular.The audio decoder chip that existing card-inserted sound box uses has packaging body usually, and be packaged with Master control chip in packaging body, and be provided with ten six roots of sensation pins in packaging body, each root pin is all electrically connected with Master control chip.
As shown in Figure 1, existing audio decoder chip is the chip of SOP16 encapsulation, packaging body 10 has two power pins VDDIO and VDDLDO, two grounding pins, analogue ground AVSSHP and digital grounding DVSS respectively, and be provided with two usb signal input pins, namely pin USBDM and USBDP be connected with usb interface module, three SD signal input pins, namely the pin SD_CMD be connected with SD card interface module, SD_CLK, SD_DAT, a microphone signal input pin MIC, a button and LED show input pin ADKEY/LED, two audio signal output pin DACL, DACR, also comprise two audio signal input pins, namely with pin AUXL and AUXR of FM model calling.
See Fig. 2, the packaging body 10 of audio decoder chip is connected with SD card interface module 15 and usb interface module 14 and takies 5 pins altogether, SD card interface module 15 is connected with pin SD_CMD, SD_CLK, SD_DAT of audio decoder chip respectively, and usb interface module 14 is connected with pin USBDM and USBDP of audio decoder module respectively.As card-inserted sound box read the data of USB flash disk time, three pins be connected with SD card decoder module 15 in Master control chip suspend the communication with SD card interface module 15, so three pins connecting SD card interface module 15 in the process reading USB flash disk data are in idle condition.In the same manner, if read the data of SD card, two pins be connected with usb interface module 14 in Master control chip suspend the communication with usb interface module 14, so in the data procedures reading SD card, two pins that Master control chip connects usb interface module 14 are in idle condition.Visible, the waste that existing audio decoder chip will cause many pins on using.
In addition, the pin that audio decoder chip is used for audio signal output has DAC dual track output pin DACL and DACR, takies 2 pins altogether.
When playing FM audio signal, the Master control chip of audio decoder chip uses AUXL and AUXR pin as input pin, be connected with FM module 16, by FM audio signal input Master control chip, play by two audio signal output pin DACL of Master control chip and DACR frames connecting with headphone or loudspeaker again, also cause the waste that pin uses.
Further, the Master control chip of audio decoder chip arranges two grounding pins, is digital grounding pin DVSS and analogue ground pin AVSS respectively, respectively takies a pin, cause the pin of audio decoder chip more.
From volume, although the size of existing audio decoder chip is very little, decrease the area of many pcb boards, but the chip of SOP8 encapsulation relatively, namely only has the chip of eight pins, the pin number of the audio decoder chip of existing SOP16 encapsulation is still more, and cost advantage is not obvious, causes the production cost of the electronic equipments such as card-inserted sound box too high.
Summary of the invention
Main purpose of the present utility model be to provide a kind of pin number few and can with the audio decoder chip of SD card, USB flash disk, FM model calling.
Another object of the present utility model is to provide the few and electronic equipment that production cost is low of a kind of audio decoder chip pin.
In order to realize above-mentioned main purpose, the audio decoder chip that the utility model provides has packaging body and is encapsulated in the Master control chip in packaging body, packaging body has eight pins, each root pin is electrically connected with Master control chip respectively, wherein, eight pins comprise three signal of communication pins, first signal of communication pin is the common pin connecting SD card interface module and FM module, second communication signal pins is the common pin connecting usb interface module and SD card interface module, third communication signal pins is for connecting usb interface module, the common pin of SD card interface module and FM module, eight pins also comprise an audio signal pin, audio signal pin is that audio signal exports the multiplexing pins inputted with microphone audio signal, eight pins also comprise a control signal pin, control signal pin is the common pin connecting button and indicator light.
From such scheme, by arranging three multiplexing signal of communication pins, each root signal of communication pin is common pin, SD card is read respectively at audio decoder chip, the audio signal phase of USB flash disk or FM module does not interfere with each other, and the pin number used is less, the pin number of audio decoder chip can be reduced, and reduce the volume of audio decoder chip, thus reduce the production cost of electronic equipment, and, the multiplexing pins inputted with microphone audio signal is exported by arranging audio signal, the pin number that audio decoder chip uses can be reduced further.
Further scheme is, eight pins also comprise the common pin of a digital grounding and analogue ground.
Visible, digital grounding pin and analogue ground pin are arranged to a common pin, the quantity of pin can be reduced further.
For realizing another above-mentioned object, the electronic equipment that the utility model provides has the audio signal output circuit that audio decoder chip and audio reception decoding chip output signal, audio decoder chip and SD card interface module, usb interface module and FM model calling, audio decoder chip has packaging body and is encapsulated in the Master control chip in packaging body, packaging body has eight pins, each root pin is electrically connected with Master control chip respectively, wherein, eight pins comprise three signal of communication pins, first signal of communication pin is the common pin connecting SD card interface module and FM module, second communication signal pins is the common pin connecting usb interface module and SD card interface module, third communication signal pins is for connecting usb interface module, the common pin of SD card interface module and FM module, eight pins also comprise an audio signal pin, audio signal pin is that audio signal exports the multiplexing pins inputted with microphone audio signal, eight pins also comprise a control signal pin, control signal pin is the common pin connecting button and indicator light.
From such scheme, the audio decoder chip of electronic equipment only arranges eight pins, and the multiplexing pins of many audio signal inputs is set, realize with the audio signal of SD card interface module, usb interface module and FM module multiplexing by the multiplexing pins of three audio signal inputs, namely three pins are used to realize the connection with SD card interface module, usb interface module and FM module, be conducive to the pin number that minimizing audio decoder chip uses, thus reduce the volume of audio decoder chip, reduce the production cost of electronic equipment.
Accompanying drawing explanation
Fig. 1 is the pin configuration figure of existing a kind of audio decoder chip.
Fig. 2 is the circuit diagram that existing a kind of audio decoder chip is connected with SD card interface module, usb interface module and FM module etc.
Fig. 3 is the pin configuration figure of the utility model audio decoder chip embodiment.
Fig. 4 is the circuit diagram that the utility model audio decoder chip embodiment is connected with SD card interface module, usb interface module and FM module etc.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
Electronic equipment of the present utility model is the electronic equipment with audio playing function, therefore audio decoder chip is provided with for the decoding data to reception, and audio signal output circuit is set, and by audio signal output circuit, decoded audio frequency is play by the audio-frequence player device such as loudspeaker, earphone.
Preferably, electronic equipment of the present utility model is card-inserted sound box, it can be connected with SD card, USB flash disk, and read SD card, data that USB flash disk stores, in addition, FM module is also set, receives radio signals by FM module, and played back by loudspeaker, earphone with the likeness in form of audio frequency after radio signals is decoded.
See Fig. 3, the audio decoder chip of electronic equipment has packaging body 20, Master control chip is packaged with in packaging body 20, packaging body 20 is provided with eight pins, two power pins VDDIO and VDDLDO, grounding pin VSS respectively, the multiplexing pins that exports of three signal of communication pin GPIO0, GPIO1 and GPIO2, a push button signalling input and LED display drivers, i.e. control signal pin GPIO3, an audio signal pin GPIO4.
Wherein, two power pins VDDIO and VDDLDO receive outside power supply respectively, and to audio decoder chip power supply, wherein power pins VDDIO receives the voltage of 3.3 volts, pin VDDLDO receives the voltage of 5 volts, and namely two power pins VDDIO and VDDLDO receive different voltage signals respectively.
Grounding pin VSS is used for the ground connection GND of audio decoder chip, and it is the common pin of digital grounding and analogue ground.Because the audio decoder chip of SOP8 encapsulation only comprises a grounding pin VSS, such needs are in audio decoder chip package process, the pad of analogue ground and digital grounding is all connected to the base plate position of packaging body, again by the pin of base plate connection encapsulation body, therefore only need a grounding pin can realize the function of analogue ground and digital grounding.
See Fig. 4, control signal pin GPIO3 is the common pin connecting button and LED light, and therefore control signal pin GPIO3 connects button and indicating lamp module 23, for receiving the signal of key-press input, and to LED light output drive signal.
The packaging body 20 of audio decoder chip is connected with microphone 21, loudspeaker or earphone 22, usb interface module 24, SD card interface module 25 and FM module 26 respectively, wherein microphone 21 is connected with audio signal pin GPIO4, loudspeaker or earphone 22 are also be connected to audio signal pin GPIO4, and therefore audio signal pin GPIO4 is that audio signal exports the multiplexing pins inputted with microphone audio signal.When microphone 21 is to audio decoder chip input audio signal, audio signal pin GPIO4 is set to input state, receive the audio signal of microphone 21 and input to audio decoder chip, when audio decoder chip output audio signal, output state is set to, to output audio signals such as loudspeaker or earphones 22 by audio signal pin GPIO4.
In addition, Master control chip does not have the signal of communication pin of FM_OUT, and the FM audio signal that therefore FM module 26 exports directly connects loudspeaker or earphone 22 is play, and playing, saving the pin of Master control chip without the need to being exported by Master control chip.
As seen from Figure 4, usb interface module 24 is connected to signal of communication pin GPIO1 and GPIO2, SD card interface module 25 is connected to signal of communication pin GPIO0, GPIO1 and GPIO2, namely SD_CLK and USBDM shares a signal of communication pin GPIO1, SD_DAT and USBDP and shares a signal of communication pin GPIO2.Like this, after USB flash disk is inserted into card-inserted sound box, when audio decoder chip reads the voice data of USB flash disk, signal of communication pin GPIO1 and GPIO2 and the usb interface module 24 of Master control chip set up correspondence.After SD card is inserted into card-inserted sound box, when audio decoder chip reads the data of SD card, Master control chip and SD card interface module 25 set up correspondence.Like this, the signal of communication pin of Master control chip can be avoided to be in idle state, to improve the utilance of Master control chip signal of communication pin.
In addition, in the present embodiment, audio decoder chip only arranges an audio signal pin GPIO4, by monaural for audio decoder chip output, output as L channel or R channel is connected to L channel and the R channel of earphone or dual track loudspeaker, thus ensures that two sound channels of loudspeaker or earphone all can have voice output.In addition, the audio signal pin of audio decoder chip is DACOUT and AUX multiplexing pins, and the input of AUX takies no longer separately the pin of audio decoder chip, saves the pin number that audio decoder chip uses.
Visible, audio decoder chip of the present utility model uses eight pins namely can realize linking with USB flash disk, SD connecing, and the signal of FM module output can be received, by two the sound channel output audio signals of an audio signal pin to earphone or loudspeaker, realize SOP8 encapsulation, thus reduce the volume of audio decoder chip, also reduce the production cost with the electronic equipment of audio playing function.
Finally it is emphasized that; the changes such as the utility model is not limited to above-mentioned execution mode, the change of the change of the function arranged as each pin, the Master control chip model selected by audio decoder chip also should be included in the protection range of the utility model claim.
Claims (6)
1. audio decoder chip, comprising:
Packaging body and the Master control chip be encapsulated in described packaging body, described packaging body has eight pins, and described in each root, pin is electrically connected with described Master control chip respectively;
It is characterized in that:
Eight described pins comprise three signal of communication pins, first signal of communication pin is the common pin connecting SD card interface module and FM module, second communication signal pins is the common pin connecting usb interface module and SD card interface module, and third communication signal pins is the common pin connecting usb interface module, SD card interface module and FM module;
Eight described pins also comprise an audio signal pin, and described audio signal pin is that audio signal exports the multiplexing pins inputted with microphone audio signal;
Eight described pins also comprise a control signal pin, and described control signal pin is the common pin connecting button and indicator light.
2. audio decoder chip according to claim 1, is characterized in that:
Eight described pins also comprise the common pin of a digital grounding and analogue ground.
3. audio decoder chip according to claim 1 and 2, is characterized in that:
Eight described pins also comprise two power pins, and two described power pins receive different voltage signals respectively.
4. electronic equipment, comprises
Audio decoder chip and receive the audio signal output circuit that described audio decoder chip outputs signal, described audio decoder chip and SD card interface module, usb interface module and FM model calling, described audio decoder chip has packaging body and is encapsulated in the Master control chip in described packaging body, described packaging body has eight pins, and described in each root, pin is electrically connected with described Master control chip respectively;
It is characterized in that:
Eight described pins comprise three signal of communication pins, first signal of communication pin is the common pin connecting described SD card interface module and described FM module, second communication signal pins is the common pin connecting described usb interface module and described SD card interface module, and third communication signal pins is the common pin connecting described usb interface module, described SD card interface module and described FM module;
Eight described pins also comprise an audio signal pin, and described audio signal pin is that audio signal exports the multiplexing pins inputted with microphone audio signal;
Eight described pins also comprise a control signal pin, and described control signal pin is the common pin connecting button and indicator light.
5. electronic equipment according to claim 4, is characterized in that:
Eight described pins also comprise the common pin of a digital grounding and analogue ground.
6. the electronic equipment according to claim 4 or 5, is characterized in that:
Eight described pins also comprise two power pins, and two described power pins receive different voltage signals respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420596226.8U CN204157019U (en) | 2014-10-15 | 2014-10-15 | Audio decoder chip and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420596226.8U CN204157019U (en) | 2014-10-15 | 2014-10-15 | Audio decoder chip and electronic equipment |
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| CN204157019U true CN204157019U (en) | 2015-02-11 |
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| CN201420596226.8U Active CN204157019U (en) | 2014-10-15 | 2014-10-15 | Audio decoder chip and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107734430A (en) * | 2017-10-27 | 2018-02-23 | 郑州云海信息技术有限公司 | A kind of ESS voicefrequency circuits denoising structure and noise-reduction method |
-
2014
- 2014-10-15 CN CN201420596226.8U patent/CN204157019U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107734430A (en) * | 2017-10-27 | 2018-02-23 | 郑州云海信息技术有限公司 | A kind of ESS voicefrequency circuits denoising structure and noise-reduction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190403 Address after: 519000 3rd Floor, Stereo Science and Technology Building, 184 Bailian Road, Jida, Zhuhai City, Guangdong Province Patentee after: Qilong Technology Co., Ltd. Address before: 519030 Unit A, 600, Sixth Floor, Main Building, No. 10 Science and Technology Road, Tangjiawan Town, Zhuhai City, Guangdong Province Patentee before: ZHUHAI HUANGRONG INTEGRATED CIRCUIT TECHNOLOGY CO., LTD. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191021 Address after: 519000 3rd Floor, Stereo Science and Technology Building, 184 Bailian Road, Jida, Zhuhai City, Guangdong Province Patentee after: Jianrong Integrated Circuit Technology (Zhuhai) Co., Ltd. Address before: 519000 3rd Floor, Stereo Science and Technology Building, 184 Bailian Road, Jida, Zhuhai City, Guangdong Province Patentee before: Qilong Technology Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220315 Address after: Rooms 1306-1309, 13 / F, 19 science Avenue West, Hong Kong Science Park, Shatin, New Territories, China Patentee after: BUILDWIN INTERNATIONAL (ZHUHAI) LTD. Address before: 519000 3rd floor, stereoscopic science and technology building, No. 184, Bailian Road, Jida, Zhuhai, Guangdong Patentee before: BUILDWIN INTERNATIONAL (ZHUHAI) Ltd. |
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| TR01 | Transfer of patent right |