Texas Instruments TAS6424L-Q1 User Manual

User's Guide

SLOU463–April 2017

TAS6424L-Q1 Evaluation Module

This manual describes the operations of the TAS6424LQ1EVM. The TAS6424LQ1EVM 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

• TAS6424L EVM operations (hardware and software) Required equipment and accessories:

1. TAS6424L EVM

2. USB A male to micro B male cable

3. Power Supply Unit (PSU) up to 26.4 V, > 6 A capable, if J2 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

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

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

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

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

1 TAS6424LQ1EVM 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.

Contents

List of Tables

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TAS6424L-Q1 Evaluation Module

1

Hardware Overview

1 Hardware Overview

1.1 TAS6424L Evaluation Module Description

The TAS6424L-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.

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TAS6424L-Q1 Evaluation Module

Figure 1. TAS6424L-Q1 EVM

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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

2

nd

ORDER LC

FILTER

SPDIF POWER SW

2

nd

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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The block diagram shows the TAS6424L EVM signal flow.

Hardware Overview

Figure 2. EVM Block Diagram

2 Hardware Overview

2.1 TAS6424L 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.

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Software Overview

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.

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TAS6424L-Q1 Evaluation Module

Figure 3. 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.

Software Overview

Figure 4. PPC3 Window

When the window in Figure 4 is displayed, click on “sign in” to see TAS6424L EVM application. All of the apps shown below may not be displayed for the user.

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Software Overview

Click on TAS6424L App box to download TAS6424L application. Installation window will pop up, then click “Install”.

TAS6424L EVM box will appear in “Installed EVM Apps” section, see Figure 5. Click on TAS6424L box to launch TAS6424L App.

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TAS6424L-Q1 Evaluation Module

Figure 5. Available Apps Window

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3.2 PurePath™ Console 3 – TAS6424L EVM Home Window

When the TAS6424L 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 “TAS6424L EVM – Offline” is displayed.

Figure 6 shows the downloading progress of TAS6424L applications. Figure 6 shows the TAS6424L installed application.

Software Overview

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Figure 6. PPC3 Window

TAS6424L-Q1 Evaluation Module

7

Software Overview

There are three windows available with the TAS6424L EVM PPC3: Home Window, Register Map Window and Device Monitor and Control Window.

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Figure 7. TAS6424L EVM Home Window

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3.3 PurePath™ Console 3 – TAS6424L 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 TAS6424L.

Software Overview

Figure 8. TAS6424L EVM Register Map Window

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Software Overview

3.4 PurePath™ Console 3 – TAS6424L 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 TAS6424L.

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Figure 9. TAS6424L EVM Device Monitor and Control Window

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Texas Instruments TAS6424L-Q1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual