Texas Instruments TAS5782M User manual

1
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
User's Guide
SLAU708–March 2017
TAS5782M Evaluation Module
(1) The PPC3 User Manual is only available after requesting the PPC3 software.
(2) Power supply minimum voltage can be lower than stated depending on the version of PPCMB used. PPCMB rev. E and earlier requires
greater than 9.02 V. PPCMB rev. F and later requires greater than 4.5 V.
This user’s guide describes the operation of the TAS5782M Evaluation Module (EVM). The EVM is
connected to the PurePath™ Console Motherboard (PPCMB). The main contents of this document
include:
• Hardware descriptions and implementation
Related documents:
• TAS5782M data sheet (SLASEG8)
• PurePath Console Motherboard User’s Guide (SLOU366)
• PPC3 User Manual (1)
• PurePath Graphic Development Suite (PurePath Console)
• TAS5782M Process Flows (SLAA737)
Required equipment and accessories:
1. TAS5782MEVM
2. PurePath console motherboard
3. A USB micro type-B cable
4. Power supply unit (PSU) 9.5 – 26.4 VDC (2)
5. Speakers and cables
6. Desktop or laptop running Microsoft®Windows®7, Windows 8, or Windows 8.1
7. Audio source: This can be a DVD player with appropriate SPDIF cable or playback media from
Windows 7, Windows 8, or Windows 8.1
Contents
1 Hardware Overview.......................................................................................................... 3
2 Hardware Setup.............................................................................................................. 6
3 Software Overview........................................................................................................... 8
4 Troubleshooting ............................................................................................................ 20
5 Board Layouts, Bill of Materials, and Schematic....................................................................... 21
List of Figures
1 TAS5782MEVM.............................................................................................................. 3
2 Device Manager ............................................................................................................. 4
3 Default Format ............................................................................................................... 5
4 PPCMB and TAS5782MEVM Connection................................................................................ 6
5 PBTL Configuration.......................................................................................................... 7
6 PBTL Connection at EVM .................................................................................................. 7
7 PBTL Connection to Speaker.............................................................................................. 7
8 PPC3 Download Window................................................................................................... 8
9 PPC3 Window................................................................................................................ 9
10 Installed EVM Apps........................................................................................................ 10
11 TAS5782M Home Page................................................................................................... 11

www.ti.com
2SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
12 System Checks Page...................................................................................................... 12
13 Direct I2C Page, I/O Tab................................................................................................... 13
14 Direct I2C Page, Log Tab.................................................................................................. 14
15 Audio I/O Page ............................................................................................................. 15
16 Register Map Page ........................................................................................................ 16
17 End System Integration Page ............................................................................................ 17
18 Header File Generation.................................................................................................... 18
19 In-System Debugging...................................................................................................... 19
20 In-System Tuning .......................................................................................................... 20
21 TAS5782MEVM Schematic (1 of 3) ..................................................................................... 21
22 TAS5782MEVM Schematic (2 of 3) ..................................................................................... 22
23 TAS5782MEVM Schematic (3 of 3) ..................................................................................... 23
24 TAS5782MEVM Top Composite Assembly............................................................................. 24
25 TAS5782MEVM Bottom Composite Assembly......................................................................... 25
List of Tables
1 TAS5782MEVM Bill of Materials ......................................................................................... 26
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.

www.ti.com Hardware Overview
3
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
1 Hardware Overview
The TAS5782MEVM showcases the latest TI digital input class-D closed loop amplifier. The TAS5782M is
an I2S or TDM input class-D amplifier with up to 96-kHz processing. The EVM is used in conjunction with
the PPCMB. The PVDD supply is provided via the TAS5782MEVM and is regulated to 5 VDC and 3.3
VDC on the PPCMB. The PPCMB provides the I2S, I2C, and 3.3 VDC to the TAS5782MEVM.
Figure 1. TAS5782MEVM
1.1 Features
• GUI control via USB port
• Stereo and mono channels with I2S input
• Processed and non-processed mono channel I2S input
• Operates in BTL or PBTL
1.2 Functions
The TAS5782MEVM is controlled by the PPCMB. The digital audio data input to the TAS5782MEVM is
sent from PPCMB and is selectable from USB audio, optical SPDIF, coaxial SPDIF, PSIA (external I2S),
and analog ADC sources.

Hardware Overview www.ti.com
4SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
1.3 Detailed Operations
Upon power-on, the PPCMB uses USB audio input (default). The I2S signals LRCLK, SCLK, SDIN and
MCLK come from the TAS1020B. foobar2000 or similar non-processing media source can be used to
stream audio. The TAS1020B enumerates as the following device on a Microsoft Windows operating
system (OS): USB audio (USB-AudioEVM), Human Interface Devices, and USB Composite Device, see
Figure 2.
Figure 2. Device Manager

www.ti.com Hardware Overview
5
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
USB audio output quality can be configured as shown in Figure 3. The user must select "2 channel, 16 bit,
48000 Hz (DVD Quality)".
Figure 3. Default Format

Hardware Setup www.ti.com
6SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
2 Hardware Setup
Step 1. Connect the PPCMB to the TAS5782MEVM.
Step 2. Connect speakers to the TAS5782MEVM.
Step 3. Connect a PSU to the TAS5782MEVM and turn on the power. 5-V and 3.3-V LEDs (Yellow)
are illuminated. The USB Lock LED (Blue) is also illuminated. The PSU voltage range is 9.5
to 26.4 VDC.
Step 4. Plug in a USB cable from the PC to the PPCMB.
Step 5. If an optical SPDIF source is used, the blue SPDIF clock-locked LED is illuminated.
Figure 4. PPCMB and TAS5782MEVM Connection
2.1 PBTL Hardware Setup
1. The EVM and PPCMB need to be disconnected from the power supply.
2. Set J10 and J11 on the EVM to PBTL mode (right position)
3. Connect speaker terminals (J4 and J9) to the speaker in PBTL mode (See Figure 7).
4. Power up the EVM and it will now operate in PBTL mode.
NOTE: The EVM has two devices (U1 and U2), only the bottom one (U2) can operate in PBTL
mode.

www.ti.com Hardware Setup
7
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
Figure 5. PBTL Configuration
Figure 6. PBTL Connection at EVM
Figure 7. PBTL Connection to Speaker
2.2 I2C Device Addresses
The default I2C addresses on the EVM are set to 0x90 for the top device (U1) and 0x92 for the bottom one
(U2).

Software Overview www.ti.com
8SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3 Software Overview
3.1 PurePath Console 3 (PPC3)
PurePath™ Console 3 (PPC3) is a software platform for Texas Instruments’ audio devices. Many of these
audio devices can be configured, tuned, and validated. This platform has the ability to support a number of
TI audio devices with features that make the audio tuning experience more intuitive and exciting. Request
access on http://www.ti.com/tool/PUREPATHCONSOLE.
Once approval is given, go to www.ti.com/mysecuresoftware to download the software. After login, users
will see this webpage with a similar list of software products available for download.
Figure 8. PPC3 Download Window

www.ti.com Software Overview
9
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
Run the installation program. Also, download the PPC3 User Manual (after requesting the PPC3 software)
for further instructions. The following window is displayed when PPC3 is launched for the first time.
When the window in Figure 9 is displayed, click on “sign in” to see TAS5782 EVM application. Click on
TAS5782M box to download TAS5782M EVM App. Installation window will pop up, then click “Install”.
Figure 9. PPC3 Window

Software Overview www.ti.com
10 SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
After installation, TAS5782 EVM box will appear in “Installed EVM Apps” section, see Figure 10. Click on
TAS5782 box to launch TAS5782 App.
Figure 10. Installed EVM Apps

www.ti.com Software Overview
11
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.2 TAS5782M Home Page
When the TAS5782M EVM App is launched, the TAS5782M Home Page is shown, see Figure 11. It
displays features that are available for that EVM. When a feature is selected, then the respective page is
loaded.
If the EVM is powered on and the USB is connected to the PC, the Home Page will display “Connect”
button in the bottom left corner. If the USB is not connected, only “TAS5782M – offline” is shown.
There are six pages available in the TAS5782 EVM App: System Checks, Direct I2C, Audio I/O, Register
Map, End System Integration and Tuning and Audio Processing.
Figure 11. TAS5782M Home Page

Software Overview www.ti.com
12 SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.3 System Checks
The System Checks Page (See Figure 12) is used to determine whether the EVM can be configured
correctly and receive audio stream from PC via USB. These checks will complete in a few minutes if no
problem is detected. It is recommended to run the system checks before proceeding to the Tuning and
Audio Processing Page.
Figure 12. System Checks Page

www.ti.com Software Overview
13
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.4 Direct I2C
The I/O tab in the Direct I2C has two sub sections. The Input section has the provision to enter the read or
write commands scripts. Clicking the Execute button will execute the commands written in the Input
section. The status of the execution is displayed in the Output section as shown in Figure 13.
The Checksum button on the right is used to compute the checksum value of a cfg file. Load a cfg file by
clicking the Checksum button and then the computed XOR and CRC checksum will show on the Output
section.
Figure 13. Direct I2C Page, I/O Tab

Software Overview www.ti.com
14 SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
The Log tab in the Direct I2C displays the I2C command history, if the record option is enabled. The log tab
has a search option to search for a particular command. The search key is found at the top left of the
window with the search icon. ‘Save to a file’ is used to save the log as a .cfg file. ‘Delete Output’ clears the
log history. ‘Copy to a Clipboard’ copies the log text to the clipboard. Clicking the ‘Start Recording’ button
starts recording the I2C transactions and displays them in the log window. ‘Stop Recording’ stops
recording I2C transactions.
Figure 14. Direct I2C Page, Log Tab

www.ti.com Software Overview
15
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.5 Audio I/O
This tool selects the desired audio input to the EVM. USB, coax, analog, optical, and PSIA (external I2S)
inputs are supported by the motherboard. USB audio source is selected as default.
Figure 15. Audio I/O Page

Software Overview www.ti.com
16 SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.6 Register Map
The Register Map Page shows the current I2C register values (hexadecimal) in the TAS5782M and it can
also be used to change the register values. Manually changing register values is accomplished by double-
clicking in the desired bit to change. Clicking on Read All Registers allows monitoring of the register status
of the amplifier. The Fields section shows the register name and a brief description of each bit that affects
the selected register.
Figure 16. Register Map Page

www.ti.com Software Overview
17
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.7 End System Integration
The End System Integration Page offers a powerful tool to generate a configuration file to use with
processors and a method to debug the device in the end system. Three options are available:
1. Dump Current State into a Header file
2. In-System Debugging
3. In-System Tuning
Figure 17. End System Integration Page

Software Overview www.ti.com
18 SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.7.1 Dump Current State into a Header File
This tool is used to generate a header or configuration file for the evaluated device according to the
features evaluated and configured with PPC3. A few settings are available for file generation, including the
format, end system I2C address, burst length and so forth. The generated file can be saved in the PC or
shown in the output window on the right.
Figure 18. Header File Generation

www.ti.com Software Overview
19
SLAU708–March 2017
Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.7.2 In-System Debugging
This tool helps debug the device which is already integrated in the end-system. This is possible by
connecting the I2C signals of the end-system device to the SCL, SDA, and GND test points of PPCMB.
Only Register Map and Direct I2C will be available in this mode. Leave the In-System Debugging Mode by
clicking on the Disconnect button on the bottom left corner of the window.
Figure 19. In-System Debugging

Troubleshooting www.ti.com
20 SLAU708–March 2017
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
TAS5782M Evaluation Module
3.7.3 In-System Tuning
Even if the device is integrated in the end application, it is still possible to make fine adjustments with the
help of In-System Tuning. Like the In-System Debugging above, this is done by connecting I2C signals
from PPCMB to the TAS5782M device in the end-system.
Figure 20. In-System Tuning
4 Troubleshooting
4.1 Power Cycle
To perform a power cycle disconnect both the USB cable and the power supply from the board.
4.2 Changing PPCMB Sample Rate
Older PPCMB devices may require a firmware update to support 48-kHz audio over USB. Instructions for
updating the PPCMB firmware is found here. Please note this update applies only to audio over USB.
96-kHz audio over USB is not supported, for now.