Texas Instruments TAS6584-Q1 EVM Manuale utente

User’s Guide

TAS6584-Q1 EVM User's Guide

ABSTRACT

This manual describes the operation of the TAS6584Q1EVM. The TAS6584Q1EVM 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

• TAS6584Q1EVM operations, both hardware and software

Required equipment and accessories:

1. TAS6584Q1EVM

2. DVDD power supply of 3.3 Vdc

3. VBAT power supply of 12 Vdc (see data sheet for allowed voltage range)

4. PVDD (see data sheet for allowed voltage range)

5. USB A male to micro B male cable

6. 1 to 4 resistive loads or speaker loads

7. 2 to 6 pairs of wires, stripped at both ends

8. 2 mm slotted screwdriver

9. Optical audio source and cable (optional)

10. Coaxial digital audio source and cable (optional)

11. Directly connected I2S or TDM source (optional)

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

Table of Contents

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

1.1 TAS6584-Q1 Evaluation Module Description.....................................................................................................................2

1.2 TAS6584-Q1 EVM Start Up................................................................................................................................................2

2 Software Overview..................................................................................................................................................................3

2.1 PurePath™ Console 3 (PPC3) Access and Description.................................................................................................... 3

2.2 PurePath Console – TAS6584 EVM Entry Window........................................................................................................... 5

2.3 Start-Up IO Configuration Window.....................................................................................................................................5

2.4 Device Monitor and Control Window..................................................................................................................................6

2.5 Audio Processing Window................................................................................................................................................. 7

2.6 IO Configuration Window................................................................................................................................................... 7

2.7 Real-Time Measurements Window.................................................................................................................................... 8

2.8 Register Map Window........................................................................................................................................................ 8

2.9 Direct I2C Window..............................................................................................................................................................9

3 Schematic and Bill of Materials...........................................................................................................................................10

3.1 Board Layout....................................................................................................................................................................10

3.2 Schematics.......................................................................................................................................................................12

3.3 Bill of Materials.................................................................................................................................................................17

Trademarks

All trademarks are the property of their respective owners.

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TAS6584-Q1 EVM User's Guide 1

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1 Hardware Overview

1.1 TAS6584-Q1 Evaluation Module Description

The TAS6584-Q1 EVM is a stand-alone EVM. It requires three power supplies, USB control via Purepath Control

Console 3 (PPC3), and a digital audio input. The digital audio input can be provided through the USB, the optical

input, the coaxial input, or directly through the I2S/TDM headers.

1.2 TAS6584-Q1 EVM Start Up

This section describes the TAS6584-Q1 EVM start-up procedure. Have the equipment and accessories listed on

the first page of this document available.

Hardware Connections:

• Connect the three power supplies to 3.3Vdc, VBAT, and PVDD

• Connect speakers or resistive loads to J11

• Connect the USB micro cable from the PC to the EVM

• Set the switches S1 through S4 as needed. Typically, all will be down, except S4 will be up for Optical input.

S3 is down for Coaxial input. With S4 down, the USB audio is selected.

• Audio source: This can be a DVD player or audio test equipment with optical or coaxial SPDIF output or a

media player from the PC.

• Turn on the 3.3Vdc power supply and then turn on the VBAT and PVDD power supplies

• If SPDIF is selected the SPDIF lock LED will be illuminated with a valid SPDIF signal.

• Launch the TAS6584 EVM PPC3 plugin on the PC.

• Set up the device appropriately and follow the screens.

• Click the Connect button in the bottom left of the Status bar if not already connected

• Click on the Device Monitor and Control box and then click play at the top. Audio should be playing to all four

speaker outputs.

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2 Software Overview

2.1 PurePath™ Console 3 (PPC3) Access and Description

The PPC3 is a server-based tool. Access must be requested on . Once approval is given, go to to download

the software. After login, the webpage in the figure below will be shown with a list a software products that are

available to download.

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TAS6584-Q1 EVM User's Guide 3

Run the installation program. Download the PPC3 User Manual (SLOU408) for further instructions. The following

window is displayed when first running PPC3.

Click on the Sign in button to see the TAS6584-Q1 application or plug-in. All the apps shown in figure below may

not be available.

Click on TAS6584 Application box to download application. An installation window will pop-up. Click the Install

button. The TAS6584 EVM box will appear in Installed EVM Apps section. Click the TAS6584 box to start the

TAS6584 app.

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2.2 PurePath Console – TAS6584 EVM Entry Window

Launch the TAS6584 EVM app and a basic configuration window will be shown. Select the proper values for the

set up. Click on the Configure IO button when selections are complete. The next window to be show is the IO

Window.

2.3 Start-Up IO Configuration Window

This window allows all the input and output setting for the device. I2S and TDM can be selected as well as

the Normal digital audio path and the Low Latency paths. The speaker connections and GPIO settings can be

selected.

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TAS6584-Q1 EVM User's Guide 5

Click on the Connect button in the lower left hand corner to connect to the EVM to show the following window.

2.4 Device Monitor and Control Window

The TAS6584 Device and Control Window provides the operational register controls after the device is set up.

Click on the Device Monitor & Control box in the Home Window and the following window is displayed.

This window has 6 major sections: Global Control Section, Channel Control boxes, Miscellaneous Control box,

Fault/Warnings box, AC Load Diagnostics box, and DC Load Diagnostics box.

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2.5 Audio Processing Window

Click on the Audio Processing Options box in the Home Window and the following window is displayed.

Each box has a defined process. Click on the on/off slider to turn a process. Each box can be opened to modify

the process. The Clip Detect box is modified at the Audio Processing Window level.

2.6 IO Configuration Window

Click on the IO Configuration box in the Home Window and the following window is displayed.

Although this window is configured at the start up of the GUI, the values can be updated after the initial

configuration process. This window allows all the input and output setting for the device. I2S and TDM can be

selected as well as the Normal digital audio path and the Low Latency paths. The speaker connections and

GPIO settings can be selected.

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TAS6584-Q1 EVM User's Guide 7

2.7 Real-Time Measurements Window

Click on the Real-Time Measurements box in the Home Window and the following window is displayed.

To start the real time measurement of voltage and temperature, click the Start button.

2.8 Register Map Window

Click on the Register Map box in the Home Window and the following window is displayed.

The register map can be sorted either alphabetically or numerically (register number). When a register is

selected, the hex value and the individual bit value is displayed. The name and description for each bit is shown

to the right in the Fields box. A bit will change state when double clicked. The state change is sent to the EVM at

the end of the second click.

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2.9 Direct I2C Window

Click on the direct I2Cbox in the Home Window and the following window is displayed.

The PPC3 has two ways to monitor and configure through direct I2C commands. The Direct I2C box can be

selected or the I2C button in the status bar can be selected from any window.

When this window is first open, the round button is green. Click on this button to turn on recording and it will

turn red. The recording can be saved for later use by clicking on the save icon. The I2C commands can also be

copied to the clip board by clicking the copy icon. The monitor can be cleared by clicking the trash icon.

A set of I2C commands can be loaded and executed from this window. On the top right corner, click on I/O

button to show the execution window. Write I2C commands or open an existing .cfg file then click the Execute

button in the bottom left corner. The I2C commands are sent to the device and the results of the execution are

shown in the bottom portion of the window.

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3 Schematic and Bill of Materials

3.1 Board Layout

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