Texas Instruments TAS6422E-Q1 Manual de usuario

User’s Guide

TAS6422E-Q1 EVM

ABSTRACT

This manual describes the operations of the TAS6422EQ1EVM. The TAS6422EQ1EVM is a stand-alone EVM.

The PurePath™ Control Console 3 GUI (PPC3) is used to initialize and operate the EVM. The main topics of this

document are:

• Hardware implementation and descriptions

• Software implementation and descriptions

• TAS6422E EVM operations (hardware and software)

Required equipment and accessories:

1. TAS6422E EVM

2. USB A male to micro B male cable

3. 1-2 resistive loads or speaker loads

4. 2-4 pair of wires stripped both ends

5. 2-mm slotted screwdriver

6. Optical audio source (optional)

7. Optical SPDIF cable (optional)

8. Desktop or laptop PC with Microsoft® Windows® 7 operating system

Table of Contents

1 Trademarks..............................................................................................................................................................................1

2 Hardware Overview................................................................................................................................................................ 2

3 Software Overview..................................................................................................................................................................4

4 Board Layouts, Bill of Materials, and Schematic...............................................................................................................20

5 Revision History................................................................................................................................................................... 29

List of Tables

Table 4-1. TAS6422EQ1EVM Bill of Materials...........................................................................................................................26

1 Trademarks

PurePath™ are trademarks of Texas Instruments.

Microsoft® and Windows® are registered trademarks of Microsoft Corporation.

All trademarks are the property of their respective owners.

www.ti.com Table of Contents

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TAS6422E-Q1 EVM 1

2 Hardware Overview

2.1 TAS6422E Evaluation Module Description

The TAS6422E-Q1 EVM is a stand-alone EVM. It has single power supply input, USB control via PurePath

Control Console 3 (PPC3) and two digital (I2S) audio input options. See the EVM block diagram in Figure 2-1.

Figure 2-1. TAS6422E-Q1 EVM

Hardware Overview www.ti.com

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The block diagram shows the TAS6422E EVM signal flow.

PVDD

4.5 Vdc to 26.4 Vdc

VBAT

4.5 Vdc to 18 Vdc

3.3 Vdc LDO

Audio Input

SPDIF

Optical

DIR9001

XMOS

I2C and USB Audio

Mux

2nd order

LC Filters

TAS6422E-Q1

Micro

USB

SPDIF Power Switch

3.3 Vdc

Standby Switch

Mute Switch

I2S input

Connectors

Speaker

Outputs

Input Power

Connector

Jumper

XMOS Enable Switch

Mute

/STBY

I2C

I2S

Fault

PVDD

VBAT

Figure 2-2. EVM Block Diagram

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TAS6422E-Q1 EVM 3

3 Software Overview

3.1 PurePath™ Console 3 (PPC3) Access and Description

The PPC3 is a server-based tool. Access can be requested on http://www.ti.com/tool/PUREPATHCONSOLE.

Once approval is given, go to www.ti.com/mysecuresoftware to download the software. After login, the user will

see this web page with a similar list of software products available for download.

Figure 3-1. PPC3 Download Window

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Run the installation program. Also download the PPC3 User Manual (SLOU408) for further instructions. The

following window is displayed when first running PPC3.

Figure 3-2. PPC3 Window

When the window in Figure 3-2 is displayed, click on “sign in” to see TAS6422E EVM application. All of the apps

shown below may not be displayed for the user.

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TAS6422E-Q1 EVM 5

Click on TAS6422E App box to download TAS6422E application. Installation window will pop up, then click

“Install”.

TAS6422E EVM box will appear in “Installed EVM Apps” section, see Figure 3-3. Click on TAS6422E box to

launch TAS6422E App.

Figure 3-3. Available Apps Window

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3.2 PurePath™ Console 3 – TAS6422E EVM Home Window

When the TAS6422E EVM PPC3 is launched, the Home Window is shown. If the EVM is powered on and the

USB is connected to the PC, the Home Window will display “Connect” box in the bottom right hand corner. If the

EVM is not powered on or the USB is not connected, only “TAS6422E EVM – Offline” is displayed.

Figure 3-4. PPC3 Window

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TAS6422E-Q1 EVM 7

There are three windows available with the TAS6422E EVM PPC3: Home Window, Register Map Window and

Device Monitor and Control Window.

Figure 3-5. TAS6422E EVM Home Window

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3.3 PurePath™ Console 3 – TAS6422E EVM Register Map Window

When click on Register Map Box on the Home Window, the Register Map Window is displayed. The Register

Map indicates the current setting of all the registers in TAS6422E.

Figure 3-6. TAS6422E EVM Register Map Window

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TAS6422E-Q1 EVM 9

3.4 PurePath™ Console 3 – TAS6422E EVM Monitor and Control Window

When click on Device Monitor and Control Box on the Home Window, the Device Monitor and Control Window is

displayed.

Figure 3-7. TAS6422E EVM Device Monitor and Control Window

Software Overview www.ti.com

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