TLV320AIC20CPFBR

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TLV320AIC20CPFBR is an integrated audio CODEC chip developed by Texas Instruments, mainly used in digital audio products such as digital recording devices and online teleconferencing systems. Its on-chip flexible serial interface and digital filters enable designers to more easily design products with high sound quality. This article describes the application field and working principle of the TLV320AIC20CPFBR.

Application Field

TLV320AIC20CPFBR is the world\'s smallest audio codec, with low power consumption and a highly integrated design. It can support a variety of data formats such as I2S and SPDIF and is suitable for sampling frequency conversions from 8kHz to 48kHz. In addition, its flexible on-chip digital audio processor can effectively reduce noise and improve sound quality.

The TLV320AIC20CPFBR is mainly used in a variety of digital audio management or playback devices, such as digital audio players, PCM audio devices, professional recording equipment, audio communication terminals, and digital recorder systems. It can also be used for sound effects adjustment in voice level adjustment, audio equalization, audio time scale expansion and contraction, audio cyclic shift, etc. It is widely used in online teleconferencing systems, online videos and online gaming applications.

Working Principle

The TLV320AIC20CPFBR integrated CODEC includes three parts: analog audio processing circuit module, digital signal processing (DSP) circuit module and serial interface support module. The analog audio processing circuit module consists of multiple analog-to-digital (A/D) converters, digital-to-analog (D/A) converters and a flexible multistage low-noise analog signal processor (ASP). The ASP mainly includes two control lines, an ADC control line used to control the maximum analog input gain, and a DAC control line used to control the maximum analog output gain. The digital signal processing (DSP) circuit module is mainly used to process the audio digital signal after A/D conversion or before D/A conversion. The DSP circuit module of the TLV320AIC20CPFBR can complete digital audio signal processing such as audio noise reduction and sound quality improvement, sampling frequency conversion, audio time-scale expansion and compression, audio cyclic shift and other functions. The serial interface support module mainly contains a flexible serial audio interface (SAI) and a digital filter module. The TLV320AIC20CPFBR supports the digital serial audio interface (SAI) protocol and the I2S interface protocol. In addition, it can also provide two-channel digital filter processing, which can be used to filter the audio signal to reduce noise and improve sound quality.

In summary, the TLV320AIC20CPFBR is a high-performance and low-power integrated audio CODEC. Its application field includes digital audio management or playback devices and online teleconferencing systems. Its on-chip flexible serial interface and digital filters enable designers to more easily design products with high sound quality. Its working principle is mainly composed of analog audio processing circuit module, digital signal processing (DSP) circuit module and Serial interface support module.

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