TEXAS INSTRUMENTS TAS5000 Technical data

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TAS5000

Digital Audio PWM Processor

Data Manual

December 2000 Digital Audio

SLAS270

IMPORTANT NOTICE

T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.

TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.

Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating

safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent

that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.

Copyright  2000, Texas Instruments Incorporated

Contents

Section Title Page

1 Introduction 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Features 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Functional Block Diagram 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Suggested System Block Diagrams 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Terminal Assignments 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5 Ordering Information 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6 Terminal Functions 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Functional Description 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Serial Audio Port 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 System Clocks – Master Mode and Slave Mode 2–1. . . . . . . . . . . . . . . . .

2.3 Oscillator/Sampling Frequency 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Phase Locked Loop (PLL)/Clock Generation 2–1. . . . . . . . . . . . . . . . . . . .

2.5 Digital Interpolation Filter 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6 Digital PWM Modulator 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7 Control, Status, and Operational Modes 2–2. . . . . . . . . . . . . . . . . . . . . . . .

2.7.1 Power Up 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.2 Reset 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.3 Power Down 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.4 Mute 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.5 Double Speed 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.6 De-Emphasis Filter 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.7 Error Status Reporting (

2.8 Serial Interface Formats 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8.1 MSB First Right Justified (for 16-, 20-, 24-bits) 2–5. . . . . . . . . .

2.8.2 IIS Compatible Serial Format (for 16-, 20-, 24-bits) 2–5. . . . . .

2.8.3 MSB Left Justified Serial Interface Format (for 16 bits) 2–6. . .

2.8.4 DSP Compatible Serial Interface Format (for 16 bits) 2–6. . . .

2.9 PWM Outputs 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Electrical Specifications 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Absolute Maximum Ratings 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Recommended Operating Conditions 3–1. . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Electrical Characteristics 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.1 Static Digital Specifications 3–2. . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.2 Digital Interpolation Filter and PWM Modulator 3–2. . . . . . . . . .

3.3.3 TAS5000/TAS5100 System Performance Measured at the

Speaker Terminals 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Switching Characteristics 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ERR pin) 2–4. . . . . . . . . . . . . . . . . . . . . .

iii

3.4.1 Serial Audio Ports Slave Mode 3–2. . . . . . . . . . . . . . . . . . . . . . .

3.4.2 Serial Audio Ports Master Mode 3–3. . . . . . . . . . . . . . . . . . . . . .

3.4.3 DSP Serial Interface Switching Characteristics 3–3. . . . . . . . .

4 Parameter Measurement Information 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Application Information 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

List of Illustrations

Figure Title Page

1–1 System #1: Stereo Configuration Using Two TAS5100 Amplifiers 1–3. . . . . . . .

1–2 System #2: Stereo Configuration With DSP 1–3. . . . . . . . . . . . . . . . . . . . . . . . . .

1–3 System #3: 6-Channel Audio Playback 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1 Power-Up Timing (
2–2 Power-Up Timing (

2–3 Reset Timing 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–4 Power-Down Timing 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–5 De-Emphasis Filter Characteristics 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–6 MSB First Right Justified 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–7 IIS Compatible Serial Format 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–8 MSB Left Justified Serial Interface Format 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–9 DSP Compatible Serial Interface Format 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–1 Right Justified, IIS, Left Justified Serial Protocol Timing 4–1. . . . . . . . . . . . . . . .

4–2 Right, Left, and IIS Serial Mode Timing Requirement 4–1. . . . . . . . . . . . . . . . . .

4–3 Serial Audio Ports Master Mode Timing 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–4 DSP Serial Port Timing 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–5 DSP Serial Port Expanded Timing 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4–6 DSP Absolute Timing Requirement 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5–1 Connection Diagram, Slave Mode (typical) 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . .

RESET preceding PDN)2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

PDN preceding (RESET)2–3. . . . . . . . . . . . . . . . . . . . . . . . . . .

List of Tables

Table Title Page

2–1 Oscillator, External Clock, and PLL Functions 2–2. . . . . . . . . . . . . . . . . . . . . . . . .

2–2 Mute Description 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–3 De-Emphasis Selection 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–4 Hardware Selection of Serial Audio Modes 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . .

iv

1 Introduction

The TAS5000 is an innovative, cost-effective, high-performance 24-bit stereo digital modulator based on Equibit
technology. This product converts input PCM serial digital audio data to an output PWM audio data stream. The
TAS5000 is designed to be connected to two TAS5100 mono true digital amplifiers for driving loudspeakers. This
all-digital audio system contains only two analog components in the signal chain—an L-C low-pass filter at the
speaker terminals. It can provide up to 90 dB SNR at the speaker terminals. It has a wide variety of serial input options
including right justified (16, 20, or 24-bit), IIS (16, 20, or 24-bit), left justified (16-bit), or DSP (16-bit) data formats. It
is fully compatible with AES standard sampling rates of 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz including providing
de-emphasis for 44.1 kHz, and 48 kHz sample rates. The T AS5000 and T AS5100 system can be used in a range of
products such as microcomponent systems, PC speakers, home theater in a box, convergence products, A/V
receivers, or TV sets.

1.1 Features

• True Digital Audio Amplifier

• High Quality Audio

• 16-, 20-, or 24 Bit Input Data

• Sampling Rates: 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz

• Supports Master and Slave Modes

• 90 dB SNR (EIAJ) and Dynamic Range at the Speaker Terminals

• 3.3 V Power Supply Operation

• Economical 48-Pin TQFP Package

• Digital De-Emphasis: 44.1 kHz and 48 kHz

• High Power Efficiency

• Clock Oscillator Circuit for Master Modes

• Low Jitter Internal PLL

• Mute

• Good Phase Characteristics

• Excellent PSRR

Equibit is the trademark of Texas Instruments.

1–1

1.2 Functional Block Diagram

PLL_FLT_RET

PLL_FLT_OUT

MCLK_IN

ERR

MCLK_OUT

XTL_IN

XTL_OUT

OSC_CAP

LRCLK

SCLK

SDIN

Serial
Audio

Port

Control Section

Audio Port

Configuration

MOD0

MOD1

MOD2

DEM_SEL

PLL/Clock
Generator

Interpolation

MUTE

RESET

DEM_EN

Digital

Filter

PDN

FTEST

STEST

PTEST

DBSPD

Equibit

Modulator

M_S

DVDD1

DVSS1

DVDD2

OSC

DVSS2

DVDD3_L

Buffer

DVSS3_L

DVSS3_R

DVDD3_R

AVSS1

AVDD1

AVSS2

AVDD2

PWM_P_L
PWM_M_L

PWM_P_R
PWM_M_R

1–2

1.3 Suggested System Block Diagrams

See application notes for more details.

Digital Audio

• USB

• IEEE 1394

• SPDIF

• ADC

• Automotive

MOST
Network

IIC

Audio

Control

Figure 1–1. System #1: Stereo Configuration Using Two TAS5100 Amplifiers

TAS3001

• Digital Parametric EQ

• Volume

• DRC

• Bass

• Treble

• Serial Audio Input Port

• Internal PLL

TAS5000

Left

Right

TAS5100

TAS5100

• 2 Mono H-Bridges

TAS5100

TAS5100

• 2 Mono H-Bridges

Digital Audio

• DSP

• Volume

• EQ

• DRC

Left

TAS5000

Right

• Serial Audio Input Port

• Internal PLL

• Bass

• Treble

• Surround Processing

• AC-3 DTS Decode

Figure 1–2. System #2: Stereo Configuration With DSP

1–3

CH1

TAS5100

Home Theater

DVD 6-Channel

Encoded Digital

Audio Source

TAS5000

6

DSP 6-Channel
Decode

• Dolby AC-3

TAS5000

CH2

CH3

CH4

TAS5100

TAS5100

• DTS

• Volume

• EQ

TAS5100

• DRC

• Bass

• Treble

TAS5100

CH5

TAS5000

CH6

TAS5100

Figure 1–3. System #3: 6-Channel Audio Playback

1–4