CN201532774U - Digital audio playing chip based on single DSP - Google Patents
Digital audio playing chip based on single DSP Download PDFInfo
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- CN201532774U CN201532774U CN2009202323914U CN200920232391U CN201532774U CN 201532774 U CN201532774 U CN 201532774U CN 2009202323914 U CN2009202323914 U CN 2009202323914U CN 200920232391 U CN200920232391 U CN 200920232391U CN 201532774 U CN201532774 U CN 201532774U
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- dsp
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- ahb bus
- interface
- digital audio
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Abstract
The utility model relates to a digital audio playing chip based on a single DSP, which comprises a single DSP core. The DSP core is connected with a read-only memory and a random access memory and connected with an AHB bus, a DMA controller is connected with the AHB bus through a self bus main port, the AHB bus is connected with a digital/analogue converting module and an analogue/digital converting module through an APB peripheral bus, an output of the digital/analogue converting module is connected with an amplifying circuit, and the AHB bus is further connected with a general data interface. The digital audio playing chip is a digital audio play SoC (System of Chip) based on the single DSP, realizes system control and digital audio decoding functions via the DSP, and then sufficiently realizes advantages of small volume and low power consumption of a vehicular and mini sound digital audio player.
Description
Technical field
The utility model relates to a kind of DAB and plays chip, and especially a kind of DAB based on single DSP is play chip.
Background technology
The chip of the digital audio-frequency player of existing vehicle-mounted and mini audio is integrated audio decoding circuit, USBOTG interface (USB OTG), SD interface and 8051 compatible MCU.Wherein 8051 compatible MCU play the master control effect, the demonstration of control screen, the transmission of USB interface data etc.; Audio decoding circuit is finished the decoding of corresponding music file.This employing is that the hardware platform of core has the equipment complexity with MCU+ audio decoding circuit dual processor, and power consumption is big, characteristics such as cost height.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of DAB to play chip based on single DSP, use single dsp processor to replace MCU+ audio decoding circuit dual processor, it is little to can be used for making a kind of volume, cost is low, low in energy consumption, novel on-vehicle and mini audio that the life-span is long.
According to the technical scheme that the utility model provides, described DAB based on single DSP is play chip and is comprised single DSP nuclear, and described DSP nuclear is connected with ROM (read-only memory) and random access memory; Described DSP nuclear is connected with ahb bus, dma controller is connected with ahb bus by the bus master port of self, ahb bus is connected with analog-to-digital converting module with numeral by the APB peripheral bus, and the output of described numeral connects amplifying circuit; Also be connected with universal data interface on the described ahb bus.
Described universal data interface comprises I80 interface, SD/MMC memory card interface, USB OTG interface.Ahb bus connects display screen and input media by described universal data interface.
Described DSP nuclear, ROM (read-only memory), random access memory, numeral, analog-to-digital converting module and universal data interface are the SOC (system on a chip) on a slice integrated circuit.
The utility model is based on the DAB of single DSP and plays SoC (System of Chip), it is by DSP realization system control and digital audio decoding code function, embedded random access memory and ROM (read-only memory), dma controller, universal data interface, and digital-to-analog conversion and analog-to-digital converting module, help so vehicle-mounted and mini audio digital audio-frequency player volume advantage applies little and low in energy consumption are come out.
Description of drawings
Fig. 1 is the utility model circuit structure block diagram.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the DAB based on single DSP described in the utility model is play SoC and is embedded with DSP nuclear, random access memory ram and read only memory ROM, dma controller, USB OTG interface, stereo 24 bit Delta-Sigma numeral DAC, I80 interface, 24 bit Delta-Sigma analog-to-digital converting module ADC, SD/MMC memory card interface.
DSP nuclear connects ROM (read-only memory) and random access memory; DSP nuclear is connected with ahb bus, dma controller is connected with ahb bus by the bus master port of self, ahb bus is connected with analog-to-digital converting module with numeral by the APB peripheral bus, and the output of described numeral connects amplifying circuit; Also be connected with universal data interface on the described ahb bus, ahb bus connects display screen and input media by described universal data interface.Described universal data interface comprises I80 interface, SD/MMC memory card interface, USB OTG interface.
DSP nuclear carries out audio decoder, file/flow data is handled, and goes back supervisory keyboard simultaneously, and display screen and storer etc. are so all programs all operate in internal processes space and the internal data space.
Dma controller conducts interviews to storer in the system and register by its high performance bus master port (Master Interface).The program and the data-carrier store that comprise DSP.
The effect of random access memory, ROM (read-only memory) is the program and the data-carrier store of inside solidification
USB OTG interface comprises interconnective USB controller and USB transceiver two parts.The USB controller designs for pure digi-tal, and it is bearing data-transformation facility and control function between system and the USB PHY (Physical layer).The USB transceiver is the circuit that digital-to-analogue is mixed, and its effect is to finish the string and the conversion of transmission data and finish the USB physical layer protocol.
The digital-to-analog conversion is converted to simulating signal with digital signal, and analog/digital conversion is a digital signal with analog signal conversion
SD/MMC is used for reading and writing outside SD/MMC card.
The I80 interface can be used for using outside sheet the memory device of I80 interface or LCM display screen to transmit and receive data.This I80 interface only is to finish the interrogation signal that the visit of AHB is converted into I80.
Peripheral bus bridge is a simple interface, the peripherals that its support property is lower.
The high performance bus bridge is mainly used in and connects the high performance system module, and it supports burst transfers of data mode and independent data transfer mode.
The utility model can be used for in-vehicle player or mini audio, the USB flash disk or the SD card that at first will have audio file during work insert USBOTG interface or SD/MMC interface respectively, DSP nuclear recognizes USB flash disk or SD card by software through the high performance bus bridge, and read wherein audio file to analog-to-digital converting module, the good binary file of conversion at first with cross dma controller through the peripheral bus bridge reading of data in random access memory or ROM (read-only memory), and then data are delivered in the DSP nuclear and decoded, then by the audio file information in I80 display interface demonstration USB flash disk or the SD card, people operate (operation by operation push-button to audio file wherein, selected songs, F.F. etc.), play if select, just decoded audio file is read in the numeral, and give amplifying circuit with simulated audio signal by output terminal, amplifying circuit is exported to loudspeaker after seeing the sound signal amplification of being imported, and this moment, digital audio-frequency player will be play selected audio file.
Claims (4)
1. play chip based on the DAB of single DSP, comprise single DSP nuclear, described DSP nuclear is connected with ROM (read-only memory) and random access memory; It is characterized in that: described DSP nuclear is connected with ahb bus, dma controller is connected with ahb bus by the bus master port of self, ahb bus is connected with analog-to-digital converting module with numeral by the APB peripheral bus, and the output of described numeral connects amplifying circuit; Also be connected with universal data interface on the described ahb bus.
2. the DAB based on single DSP as claimed in claim 1 is play chip, and it is characterized in that: described universal data interface comprises I80 interface, SD/MMC memory card interface, USB OTG interface.
3. the DAB based on single DSP as claimed in claim 1 is play chip, and it is characterized in that: described ahb bus connects display screen and input media by universal data interface.
4. the DAB based on single DSP as claimed in claim 1 is play chip, and it is characterized in that: described DSP nuclear, ROM (read-only memory), random access memory, numeral, analog-to-digital converting module and universal data interface are the SOC (system on a chip) on a slice integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202323914U CN201532774U (en) | 2009-09-30 | 2009-09-30 | Digital audio playing chip based on single DSP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202323914U CN201532774U (en) | 2009-09-30 | 2009-09-30 | Digital audio playing chip based on single DSP |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201532774U true CN201532774U (en) | 2010-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202323914U Expired - Fee Related CN201532774U (en) | 2009-09-30 | 2009-09-30 | Digital audio playing chip based on single DSP |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320754A (en) * | 2018-02-05 | 2018-07-24 | 山东师范大学 | A kind of audio decoder, coding/decoding method and multimedia system |
| CN109117113A (en) * | 2018-08-31 | 2019-01-01 | 佛山启碇电子科技有限公司 | A kind of automobile audio regulating system for realizing that onboard audio is adjusted by vehicle device |
| CN110913379A (en) * | 2019-10-15 | 2020-03-24 | 上海思致汽车工程技术有限公司 | Vehicle-mounted multifunctional acoustic system |
| CN111093109A (en) * | 2018-10-24 | 2020-05-01 | 杭州海康威视数字技术股份有限公司 | Media data playing processing method and media playing equipment |
| CN112365906A (en) * | 2020-12-21 | 2021-02-12 | 上汽大通汽车有限公司 | Method for processing various CHIME sounds of automobile by BSP module based on SOC (system on chip) |
| CN113419979A (en) * | 2021-05-26 | 2021-09-21 | 深圳市昱森微电子有限公司 | USB multimedia concentrator control chip |
-
2009
- 2009-09-30 CN CN2009202323914U patent/CN201532774U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320754A (en) * | 2018-02-05 | 2018-07-24 | 山东师范大学 | A kind of audio decoder, coding/decoding method and multimedia system |
| CN108320754B (en) * | 2018-02-05 | 2019-03-19 | 山东师范大学 | A kind of audio decoder, coding/decoding method and multimedia system |
| CN109117113A (en) * | 2018-08-31 | 2019-01-01 | 佛山启碇电子科技有限公司 | A kind of automobile audio regulating system for realizing that onboard audio is adjusted by vehicle device |
| CN111093109A (en) * | 2018-10-24 | 2020-05-01 | 杭州海康威视数字技术股份有限公司 | Media data playing processing method and media playing equipment |
| CN111093109B (en) * | 2018-10-24 | 2022-07-29 | 杭州海康威视数字技术股份有限公司 | Media data playing processing method and media playing equipment |
| CN110913379A (en) * | 2019-10-15 | 2020-03-24 | 上海思致汽车工程技术有限公司 | Vehicle-mounted multifunctional acoustic system |
| CN112365906A (en) * | 2020-12-21 | 2021-02-12 | 上汽大通汽车有限公司 | Method for processing various CHIME sounds of automobile by BSP module based on SOC (system on chip) |
| CN113419979A (en) * | 2021-05-26 | 2021-09-21 | 深圳市昱森微电子有限公司 | USB multimedia concentrator control chip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20170930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |