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Audio system with small scale integration (SSI) module and working method thereof

A technology of audio system and working method, applied in the direction of digital recording/reproduction, etc., which can solve the problems of poor audio quality and low precision

Inactive Publication Date: 2013-04-24
AEROSPACE SCI & IND SHENZHEN GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem of poor audio quality and low precision in the processing of low-end processors containing SSI modules in the prior art, and provides an audio system with SSI modules with high sound quality and high precision

Method used

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  • Audio system with small scale integration (SSI) module and working method thereof
  • Audio system with small scale integration (SSI) module and working method thereof
  • Audio system with small scale integration (SSI) module and working method thereof

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Embodiment Construction

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] Such as figure 1 As shown, an embodiment of the present invention provides an audio system with an SSI module 110, including a digital processor 100 with an SSI module 110 and an I2S audio digital-to-analog converter 200, and the digital processor 100 controls the SSI module 110 sends audio signals SCK0, MOSI0, and SSEL0 to the I2S audio digital-to-analog converter 200 for audio playback; wherein, SCK0 is an audio clock signal, MOSI0 is an audio data signal, and SSEL0 is an audio indication signal.

[0033] combine figure 2 As shown, the waveforms of the audio ...

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Abstract

The invention provides an audio system with a small scale integration (SSI) module. The audio system with the SSI module comprises a digital processor with the SSI module, and an inter-IC sound (I2S) audio digital-to-analog converter, wherein the digital processor controls the SSI module to send audio signals SCK0, audio signals MOSI0 and audio signals SSEL0 to the I2S audio digital-to-analog converter for audio playing, the audio signals SCK0 pass through a NOT gate to be input to a pin BCK of the I2S audio digital-to-analog converter, the audio signals MOSI0 are directly input to a pin DATA of the I2S audio digital-to-analog converter, and the audio signals SSEL0 pass through a D flip-flop for dividing frequency by two and then are input to a pin WS of the I2S audio digital-to-analog converter. The audio signals SCK0 are audio clock signals, the audio signals MOSI0 are audio data signals, and the audio signals SSEL0 are audio indicator signals. Due to the technical scheme, the audio system with the SSI module can output high-quality audio signals.

Description

technical field [0001] The invention relates to a digital processing circuit, in particular to an audio system with an SSI module and its working method. Background technique [0002] At present, digital audio has been widely used in various fields, such as toys, digital broadcasting, digital audio players, etc. Converting digital signals to analog audio requires a digital-to-analog converter, abbreviated as DAC. At present, the DAC for audio is connected by I2S bus, which can support the sampling rate of 4~192kHz and the highest data precision of 32 bits, and the DAC chip has many modules for improving audio quality, which can provide professional-level audio quality. The I2S bus is a bus standard developed by Philips for audio data transmission between digital audio devices. This bus is dedicated to data transmission between audio devices and is widely used in various multimedia systems. It uses independent wires The design of transmitting clock and data signals, by separ...

Claims

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Application Information

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IPC IPC(8): G11B20/10
Inventor 刘金涛
Owner AEROSPACE SCI & IND SHENZHEN GROUP
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