TLV320AIC3101低功耗立体声音频编解码器技术文档

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"TLV320AIC3101是一款低功耗立体声音频编解码器，适用于便携式音频和电话应用。它提供了丰富的电源控制模块，适用于不同电源供应范围，并具备高性能的立体声DAC和ADC。这款芯片支持8kHz到96kHz的采样率，拥有高信噪比，且内置3D、低音、高音、均衡器和去加重等音频处理功能。此外，其封装为5mm×5mm的32引脚QFN封装，适用于数字相机、智能移动设备等应用。" 【TLV320AIC3101核心特性】 TLV320AIC3101的核心特性包括： 1. **模块化电源控制**：该编解码器具有灵活的电源管理功能，可以适应不同电源电压范围，如模拟部分工作在2.7V至3.6V，数字核心部分工作在1.525V至1.95V，数字I/O接口则可在1.1V至3.6V之间。 2. **立体声音频DAC**：提供102dB的信噪比，支持16/20/24/32位数据宽度，能够实现高质量的音频输出。 3. **音频ADC**：具有92dB的信噪比，同样支持8kHz至96kHz的采样率，确保录音质量。 4. **灵活的配置**：六路音频输入引脚可编程为单端或全差分配置，适应不同应用场景。 5. **数字信号处理与噪声过滤**：内置的数字信号处理器可实现3D、低音、高音、均衡器和去加重等多种音频效果，同时提供噪声过滤功能。 6. **节能模式**：具有多种节能模式，以适应便携式设备对电池寿命的需求。 7. **封装形式**：采用小型化设计，32引脚的5mm×5mm QFN封装，方便在紧凑空间内集成。【应用场景】 TLV320AIC3101广泛应用于： 1. **数字相机**：提供高质量的音频录制和回放功能，增强用户体验。 2. **智能移动设备**：如智能手机和平板电脑，作为音频处理核心，提供优秀的通话质量和多媒体音频体验。 3. **便携式音频设备**：如MP3播放器或蓝牙音箱，用于播放和处理音频文件。 4. **语音识别和通话系统**：在物联网设备和智能家居产品中，用于处理语音输入和输出。 5. **其他消费电子产品**：例如游戏设备、个人数字助手（PDA）等，提供卓越的音频性能。这款编解码器结合了高效能和低功耗的特点，使其成为各种便携式音频和通信设备的理想选择。通过对其寄存器进行详细设置，开发者可以根据具体需求调整音频参数，优化音频性能，实现定制化的音频解决方案。同时，配合相应的工具软件和社区支持，开发过程将更加高效和便捷。

TLV320AIC3101

SLAS520E –FEBRUARY 2007 –REVISED DECEMBER 2014

www.ti.com

11 Detailed Description

11.1 Overview

The TLV320AIC3101 is a highly flexible, low-power, stereo audio codec with extensive feature integration,

intended for applications in smartphones, PDAs, and portable computing, communication, and entertainment

applications. Available in a 5-mm × 5-mm, 32-lead QFN, the product integrates a host of features to reduce cost,

board space, and power consumption in space-constrained, battery-powered, portable applications.

The TLV320AIC3101 consists of the following blocks:

• Stereo audio multibit delta-sigma DAC (8 kHz–96 kHz)

• Stereo audio multibit delta-sigma ADC (8 kHz–96 kHz)

• Programmable digital audio effects processing (3-D, bass, treble, midrange, EQ, notch filter, de-emphasis)

• Four audio inputs

• Four high-power audio output drivers (headphone drive capability)

• Four high-power audio output drivers (headphone/speaker drive capability)

• Two fully differential line output drivers

• Fully programmable PLL

• Headphone/headset jack detection available as register status bit

Product Folder Links: TLV320AIC3101

TLV320AIC3101

SLAS520E –FEBRUARY 2007 –REVISED DECEMBER 2014

www.ti.com

11.3 Feature Description

11.3.1 Hardware Reset

The TLV320AIC3101 requires a hardware reset after power up for proper operation. After all power supplies are

at their specified values, the RESET pin must be driven low for at least 10 ns. If this reset sequence is not

performed, the TLV320AIC3101 may not respond properly to register reads/writes.

11.3.2 Digital Audio Data Serial Interface

Audio data is transferred between the host processor and the TLV320AIC3101 via the digital audio data serial

interface. The audio bus of the TLV320AIC3101 can be configured for left- or right-justified, I

S, DSP, or TDM

modes of operation, where communication with standard telephony PCM interfaces is supported within the TDM

mode. These modes are all MSB-first, with data width programmable as 16, 20, 24, or 32 bits. In addition, the

word clock (WCLK) and bit clock (BCLK) can be independently configured in either master or slave mode, for

flexible connectivity to a wide variety of processors.

The word clock (WCLK) is used to define the beginning of a frame, and may be programmed as either a pulse or

a square-wave signal. The frequency of this clock corresponds to the selected ADC and DAC sampling

frequencies.

The bit clock (BCLK) is used to clock in and out the digital audio data across the serial bus. When in master

mode, this signal can be programmed in two further modes: continuous transfer mode, and 256-clock mode. In

continuous transfer mode, only the minimal number of bit clocks needed to transfer the audio data are generated,

so in general the number of bit clocks per frame is two times the data width. For example, if data width is chosen

as 16 bits, then 32 bit clocks are generated per frame. If the bit clock signal in master mode is to be used by a

PLL in another device, it is recommended that the 16-bit or 32-bit data-width selections be used. These cases

result in a low-jitter bit clock signal being generated, having frequencies of 32 f

or 64 f

. In the cases of 20-bit

and 24-bt data width in master mode, the bit clocks generated in each frame are not all of equal period, due to

the device not having a clean 40-f

or 48-f

clock signal readily available. The average frequency of the bit clock

signal is still accurate in these cases (being 40 f

or 48 f

), but the resulting clock signal has higher jitter than in

the 16-bit and 32-bit cases.

In 256-clock mode, a constant 256 bit clocks per frame are generated, independent of the data width chosen.

The TLV320AIC3101 further includes programmability to place the DOUT line in the high-impedance state during

all bit clocks when valid data is not being sent. By combining this capability with the ability to program at what bit

clock in a frame the audio data begins, time-division multiplexing (TDM) can be accomplished, resulting in

multiple codecs able to use a single audio serial data bus.

When the digital audio data serial interface is powered down while configured in master mode, the pins

associated with the interface are put into a high-impedance state.

11.3.2.1 Right-Justified Mode

In right-justified mode, the LSB of the left channel is valid on the rising edge of the bit clock preceding the falling

edge of word clock. Similarly, the LSB of the right channel is valid on the rising edge of the bit clock preceding

the rising edge of the word clock.

Product Folder Links: TLV320AIC3101

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