Texas Instruments TAS6424-Q1 Manual de usuario

SLOU453A–September 2016–Revised October 2017

TAS6424-Q1 Evaluation Module

User's Guide

SLOU453A–September 2016–Revised October 2017

TAS6424-Q1 Evaluation Module

This manual describes the operations of the TAS6424Q1EVM. The TAS6424Q1EVM 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

• TAS6424 EVM operations (hardware and software)

Required equipment and accessories:

1. TAS6424 EVM

2. USB A male to micro B male cable

3. Power Supply Unit (PSU) up to 26.4 V, > 6 A capable, if J12 is removed and 12 V is provided.

If J12 is in, limit the input voltage to 18 V.

4. 1-4 resistive loads or speaker loads

5. 2-6 pair of wires stripped both ends

6. 2-mm slotted screwdriver

7. Optical audio source (optional)

8. Optical SPDIF cable (optional)

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

Contents

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

2 Hardware Overview.......................................................................................................... 3

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

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

List of Tables

1 TAS6424Q1EVM Bill of Materials........................................................................................ 24

Trademarks

PurePath is a trademark of Texas Instruments.

Microsoft, Windows are registered trademarks of Microsoft Corporation.

All other trademarks are the property of their respective owners.

Hardware Overview

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1 Hardware Overview

1.1 TAS6424E3 Evaluation Module Description

The TAS6424-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 1.

Figure 1. TAS6424-Q1 EVM

3.3V

LDO

TAS1020B

3.3V

I2S

GPIO

EEPROM I2C

DIR9001

4.5-26V

INPUT

USB

AUDIO

INPUT

OPT -SPDIF

4.5-26V

TAS6424

OUTPUTS

TAS1020B is turned off during EMC test

STBY SW

GPIO

2nd

ORDER LC

FILTER

SPDIF POWER SW

2nd

ORDER LC

FILTER

SHUTDOWN

MUTE

FAULT

WARN

I2S

SOURCE

SELECT

LED

External

I2S

MUTE SW

SPDIF

3.3V

5V-USB

3.3V

SPDIF LOCK

Selects Optical

Remove

Resistors

For External

I2S Input

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Hardware Overview

SLOU453A–September 2016–Revised October 2017

TAS6424-Q1 Evaluation Module

The block diagram shows the TAS6424E3 EVM signal flow.

Figure 2. EVM Block Diagram

2 Hardware Overview

2.1 TAS6424E3 Evaluation Module Functions

• The EVM only needs single supply to operate

• The VBAT can be separated for PVDD operation higher than 18 V

• Two audio sources can be selected readily

1. If USB is selected, Windows Media Player can be used to stream audio.

2. If optical is selected, an optical source such as DVD player can be used to stream audio.

3. If external digital audio source such as Programmable Serial Interface Adapter (PSIA) from Audio

Precision, series resistors on I2S signals can be removed and jumpers can be used to insert

external I2S signals.

• There are three switches

1. SPDIF power switch turns on and off optical to I2S converter.

2. Standby switch puts the device on or out of standby.

3. Mute switch stops or starts PWM modulation.

• USB connection also uses as a controller via I2C. The Pure Path Console 3 is the User Interface

sending I2C commands to the device. PPC3 will be discussed in a later section.

Software Overview

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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. PPC3 Download Window

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Software Overview

SLOU453A–September 2016–Revised October 2017

TAS6424-Q1 Evaluation Module

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

The following window is displayed when first running PPC3.

Figure 4. PPC3 Window

When the window in Figure 4 is displayed, click on “sign in” to see TAS6424 EVM application. All of the

apps shown below may not be displayed for the user.

Software Overview

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Click on TAS6424 App box to download TAS6424 application. Installation window will pop up, then click

“Install”.

TAS6424 EVM box will appear in “Installed EVM Apps” section, see Figure 5. Click on TAS6424 box to

launch TAS6424 App.

Figure 5. Available Apps Window

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Software Overview

SLOU453A–September 2016–Revised October 2017

TAS6424-Q1 Evaluation Module

3.2 PurePath™ Console 3 – TAS6424 EVM Home Window

When the TAS6424 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 “TAS6424 EVM – Offline” is

displayed.

Figure 6 shows the downloading progress of TAS6424 applications.

Figure 6. PPC3 Window

Software Overview

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There are three windows available with the TAS6424 EVM PPC3: Home Window, Register Map Window

and Device Monitor and Control Window.

Figure 7. TAS6424 EVM Home Window

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Software Overview

SLOU453A–September 2016–Revised October 2017

TAS6424-Q1 Evaluation Module

3.3 PurePath™ Console 3 – TAS6424 EVM Register Map Window

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

Figure 8. TAS6424 EVM Register Map Window

Software Overview

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3.4 PurePath™ Console 3 – TAS6424 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. The Register Map indicates the current setting of all the registers in TAS6424.

Figure 9. TAS6424 EVM Device Monitor and Control Window

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