Texas Instruments TAS3208EVM-LC Manuale utente

TAS3208EVM-LC

Low-Cost (LC) Evaluation Module (EVM)for TAS3208 Digital Audio Processor

User's Guide

Literature Number: SLEU097April 2008

2 SLEU097 – April 2008Submit Documentation Feedback

Contents

Preface ............................................................................................................................... 5

1 Overview ................................................................................................................... 71.1 TAS3208EVM-LC Features ................................................................................................ 81.2 TAS3208EVM-LC Block Diagram ......................................................................................... 91.3 TAS3208EVM-LC PCB Component Mapping .......................................................................... 10

2 Quick Setup Guide .................................................................................................... 112.1 Unpacking the EVM ........................................................................................................ 122.2 Power Supply Setup ....................................................................................................... 122.3 PurePath GDE Software Installation ..................................................................................... 122.4 Developing the Process Flow on the EVM .............................................................................. 132.4.1 Default Configuration ............................................................................................. 132.4.2 Configuring the EVM .............................................................................................. 132.4.3 Master/Slave Mode Operation ................................................................................... 142.4.4 Loading the Process Flow ........................................................................................ 142.4.5 Running the Process Flow ....................................................................................... 15

3 System Interfaces ..................................................................................................... 173.1 Digital Audio Interface ..................................................................................................... 183.1.1 Digital Input Header ............................................................................................... 183.1.2 Digital Output Header ............................................................................................. 183.2 Analog Audio Interface .................................................................................................... 193.2.1 Analog Output Header ............................................................................................ 193.2.2 Analog Input Header .............................................................................................. 193.3 Control Interface ............................................................................................................ 20

Important Notices ............................................................................................................... 21

SLEU097 – April 2008 Contents 3Submit Documentation Feedback

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List of Figures

1-1 Block Diagram ................................................................................................................ 91-2 Component Mapping ....................................................................................................... 101-3 Printed Circuit Assembly .................................................................................................. 102-1 PurePath Studio I

C Command File Window ........................................................................... 14

List of Tables

1 Related TI Documentation .................................................................................................. 53-1 Digital Audio Input Interface (J1) ......................................................................................... 183-2 Digital Audio Output Interface (J3) ....................................................................................... 183-3 Analog Output Interface (J5) .............................................................................................. 193-4 Analog Input Interface (J4) ................................................................................................ 193-5 Control Interface (J6) ...................................................................................................... 20

4List of Figures SLEU097 – April 2008Submit Documentation Feedback

Preface

SLEU097 – April 2008

Read This First

About This Manual

This manual describes the operation of the TAS3208 low-cost (LC) evaluation module (EVM) from TexasInstruments.

How to Use This ManualThis document contains the following chapters:•Chapter 1 – Overview•Chapter 2 – Quick Setup Guide•Chapter 3 – System Interfaces

Information About Cautions and WarningsThis manual may contain cautions and warnings.

CAUTION

This is an example of a caution statement.

A caution statement describes a situation that could potentially damage yoursoftware or equipment.

WARNINGThis is an example of a warning statement.

A warning statement describes a situation that could potentiallycause harm to you.

The information in a caution or a warning is provided for your protection. Please read each caution andwarning carefully.

Related Documentation From Texas InstrumentsTable 1 contains a list of data manuals that have detailed descriptions of the integrated circuits used in thedesign of the TAS3208EVM-LC. The data manuals can be obtained at www.ti.com .

Table 1. Related TI Documentation

DEVICE LITERATURE NUMBER

TAS3208 SLES201BTUSB3210 SLLS466TPA6610A2 SLOS314TPS3808 SBVS050SN74LVC1G08 SCES217TPS79533 SLVS350

SLEU097 – April 2008 Read This First 5Submit Documentation Feedback

Additional Documentation

www.ti.com

Additional Documentation

•PurePath Studio™ Graphical Development Environment (GDE) tool for TAS3208•General application notes•TAS3108 Audio DSP Instruction Set Reference Guide (SLEU067)

Important Software UpdatesThe TAS3208 is shipped with the latest version of PurePath Studio GDE at the time of the initial EVMrelease.

Before starting any new design, verify that you are using the latest version of PurePath Studio GDEavailable by requesting access to the Texas Instruments Mixed Signal Audio & Video extranet viahttp://www-k.ext.ti.com/sc/technical-support/email-tech-support.asp?DSP . Once access is granted, anynew build of the software can simply be downloaded via an internet connection.Trademarks

PurePath Studio, PurePath Digital are trademarks of Texas Instruments.

All other trademarks are the property of their respective owners.

6Read This First SLEU097 – April 2008Submit Documentation Feedback

Chapter 1SLEU097 – April 2008

Overview

The PurePath Digital™ TAS3208EVM-LC demonstrates the TAS3208 Digital Audio Processor from TexasInstruments (TI).

The TAS3208 is a fully programmable high-performance system on chip (SoC) digital audio processor. Ituses an efficient, custom, multi-instruction programming environment optimized for digital audioprocessing algorithms. The TAS3208 architecture provides high-quality audio processing by using a 48-bitdata path, 28-bit filter coefficients, and a single-cycle 28 x 48-bit multiplier with a 76-bit accumulator. Ancustom embedded 8051 microprocessor provides algorithm and data control. The TAS3208 is thecommercial version intended for home audio and other commercial applications.

The TAS3208 is well-suited for inclusion in digital televisions, home theater systems, mini-componentaudio systems, and pro-audio systems.

Topic .................................................................................................. Page

1.1 TAS3208EVM-LC Features ........................................................... 81.2 TAS3208EVM-LC Block Diagram ................................................... 91.3 TAS3208EVM-LC PCB Component Mapping ................................. 10

SLEU097 – April 2008 Overview 7Submit Documentation Feedback

1.1 TAS3208EVM-LC Features

TAS3208EVM-LC Features

www.ti.com

•Three serial digital stereo inputs (S/PDIF, I

S, left- or right-justified)•Two serial digital stereo outputs (S/PDIF, I

S, left- or right-justified)•Three analog stereo inputs multiplexed to one analog-to-digital converter•One analog stereo digital-to-analog output•One analog stereo line output•One 24-mW, 3.5-mm headphone output jack•One 3.5-mm stereo line input jack•USB interface for I

C control via PurePath Studio GDE•Double-sided plated-through PCB layout•Three LED status indicators for reset, I

C, and USB link

The primary usage mode of the EVM is to provide a software development platform that receives thecontrol and signal processing flow descriptions from a host PC running the PurePath™ Studio GraphicalEnvironment (GDE) or Integrated Development Environment (IDE) through a Universal Serial Bus (USB)interface. In this mode of operation, the user develops a signal processing flow and custom componentsusing PurePath™ Studio. The resulting process flows can be loaded into the EVM EEPROM via the USB.The TAS3208 then loads the EEPROM contents and executes the signal processing flows. Duringexecution, many of the TAS3208 signal processing flow parameters can be dynamically changed usingthe PurePath™ Studio Graphical Development Environment, allowing the user to customize the processflow without resetting the device.

The TAS3208EVM-LC contains hardware logic, which can be utilized to reset the TAS3208 Digital AudioProcessor without disconnecting and re-enumerating the USB Controller. A red LED indicates the periodin which the reset is active. Additional on-board LEDs indicate that the board is powered, Active I

Ctransactions from either a host controller or the EEPROM, and that the USB link to the host PC isestablished.

Further information on using the EVM with the PurePath Studio GDE is included in subsequent sections ofthis document and through additional PurePath Studio documentation.

Overview 8 SLEU097 – April 2008Submit Documentation Feedback

1.2 TAS3208EVM-LC Block Diagram

SDA

SCL

RESET

SDIN3

SDIN1

LRCLK

MCLK

SCLK

POWER

SUPPLY

POR

MCLK

LRCLK

SDIN2

5 V 3.3 V

LDO

3.3 V

RESET

SCLK

TUSB3210

USB-I2C

6x ANALOG INPUTS

HEADER

HPOUT L/R

DACOUT2 L/R

LPF

USB BUS POWER

+5 V/500 mA

I2S

OUTPUT

HEADER

SDOUT1/2

2x ANALOG INPUTS

3.5 mm CONNECTOR TAS3208 LINEOUT1 L/R

HEADPHONE AMP

3.5 mm CONNECTOR

ANALOG

OUTPUTS

HEADER

LOW

PASS

FILTER

POWER-ON RESET

USB-RESET HPOUT L/R

I2S

INPUT

HEADER

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TAS3208EVM-LC Block Diagram

Figure 1-1. Block Diagram

SLEU097 – April 2008 Overview 9Submit Documentation Feedback

1.3 TAS3208EVM-LC PCB Component Mapping

USB

Input

TUSB3210

(underside)

LED LED

LED

Analog Input Header

Headphone Output

Stereo

Line In Jack

Control Header I S Input Header

2I S Output Header

2Analog Output Header

EEPROM

TAS3208

Reset

TAS3208EVM-LC PCB Component Mapping

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Figure 1-2. Component Mapping

Figure 1-3. Printed Circuit Assembly

10 Overview SLEU097 – April 2008Submit Documentation Feedback

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