TLV320AIC21C datasheet(3/62 Pages) TI

Part #	TLV320AIC21C

Description	Low Power,Low Voltage 1.1V to 3.6V I/O Highly-Integrated Programmable 16-Bit 26-KSPS Dual Channel Codec

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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3 / 62 page

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Contents

Section

Title

Page

1

Introduction

1–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1

Features

1–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2

Functional Block Diagram

1–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3

Functional Block Diagram (One of Two Codecs Shown)

1–4

. . . . . . .

2

Terminal Descriptions

2–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1

Ordering Information

2–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2

Terminal Functions

2–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3

Definitions and Terminology

2–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

Functional Description

3–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1

Operating Frequencies

3–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2

Internal Architecture

3–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1

Antialiasing Filter

3–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.2

Sigma-Delta ADC

3–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.3

Decimation Filter

3–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.4

Sigma-Delta DAC

3–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.5

Interpolation Filter

3–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.6

Analog/Digital Loopback

3–2

. . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.7

Analog Sidetone

3–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.8

Digital Sidetone

3–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3

Analog Input/Output

3–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.1

Analog Crosspoint

3–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.2

Analog Input Amplifier

3–2

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.3

Microphone Bias

3–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.4

Handset and Headset Drivers

3–3

. . . . . . . . . . . . . . . . . . . . .

3.3.5

Speaker Driver

3–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4

IIR/FIR Control

3–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.1

Overflow Flags

3–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.2

IIR/FIR Bypass Mode

3–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5

System Reset and Power Management

3–4

. . . . . . . . . . . . . . . . . . . . .

3.5.1

Software and Hardware Reset

3–4

. . . . . . . . . . . . . . . . . . . . .

3.5.2

Power Management

3–4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6

Digital Interface

3–4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6.1

Clock Source (MCLK, SCLK)

3–4

. . . . . . . . . . . . . . . . . . . . . .

3.6.2

Serial Data Out (DOUT)

3–5

. . . . . . . . . . . . . . . . . . . . . . . . . .

3.6.3

Serial Data In (DIN)

3–5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6.4

Frame-Sync FS

3–5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6.5

Cascade Mode and Frame-Sync Delayed (FSD)

3–5

. . . . .

3.6.6

Stand-Alone Slave

3–6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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