Texas Instruments TAS5766MDCAEVM User manual

User's Guide
SLOU382–June 2014
TAS5766MDCAEVM
This user’s guide describes the operation of the TAS5766MDCAEVM. The TAS5766MDCAEVM is
connected to the PurePath™ Console Motherboard (PPCMB). For questions and support go to the E2E
forums (e2e.ti.com). The main contents of this document are:
• Hardware descriptions and implementation
• Start up procedure using PurePath Console (PPC) software with TAS5766M plug-in
Related documents:
• TAS5766M Data Sheet (SLASE25)
•PurePath Console Motherboard User’s Guide (SLOU366)
• PurePath Graphic Development Suite (PurePath Console)
Contents
1 Hardware Overview.......................................................................................................... 2
1.1 TAS5766MDCAEVM Features.................................................................................... 2
1.2 TAS5766MDCAEVM Functions................................................................................... 3
1.3 TAS5766MDCAEVM Detailed Operations....................................................................... 3
2 TAS5766MDCAEVM Setup ................................................................................................ 4
2.1 Hardware Setup..................................................................................................... 4
2.2 Software Installation................................................................................................ 5
3 Using the PurePath Console with the TAS5766MDCAEVM Board................................................... 6
3.1 TAS5766M Main Tab............................................................................................... 6
3.2 TAS5766M Block Diagram Tab................................................................................... 7
3.3 Pop-Up Windows ................................................................................................... 8
3.4 Direct I2C Access Tab ............................................................................................ 10
3.5 Device Registers Tab............................................................................................. 10
4 Board Layouts, Bill of Materials, and Schematics...................................................................... 11
4.1 TAS5766MDCAEVM Board Layouts ........................................................................... 11
4.2 Bill of Materials .................................................................................................... 12
4.3 TAS5766MDCAEVM Schematic ................................................................................ 13
List of Figures
1 PPCMB and TAS5766MDCAEVM......................................................................................... 2
2 Device Manager.............................................................................................................. 3
3 PPCMB and TAS5766MDCAEVM Connection.......................................................................... 4
4 Target Selection List......................................................................................................... 5
5 Add Target List............................................................................................................... 5
6 PPCMB and TAS5766MDCAEVM......................................................................................... 6
7 TAS5766M Block Diagram ................................................................................................. 7
8 Smart Amplifier GUI Pop-Up ............................................................................................... 8
9 Biquad Block Pop-up........................................................................................................ 9
10 Direct I2C Access........................................................................................................... 10
11 Device Registers Tab...................................................................................................... 10
12 TAS5766MDCAEVM Top Composite Assembly....................................................................... 11
13 TAS5766MDCAEVM Bottom Composite Assembly ................................................................... 11
1
SLOU382–June 2014 TAS5766MDCAEVM
Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated

Hardware Overview www.ti.com
14 TAS5766MDCAEVM Schematic (Page 1 of 2)......................................................................... 13
15 TAS5766MDCAEVM Schematic (Page 2 of 2)......................................................................... 14
List of Tables
1 TAS5766MDCAEVM Bill of Materials.................................................................................... 12
1 Hardware Overview
The TAS5766MDCAEVM showcases the latest TI digital input class D closed loop amplifier. The
TAS5766M is an I2S or TDM input class D amplifier with PurePath Smart Amp. The EVM is used in
conjunction with the PurePath Console Motherboard (PPCMB). The PVDD supply is provided via the
TAS5766MDCAEVM 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 TAS5766MDCAEVM.
Figure 1. PPCMB and TAS5766MDCAEVM
1.1 TAS5766MDCAEVM Features
• GUI control via USB port
• Stereo channels with I2S or TDM
PurePath is a trademark of Texas Instruments.
Microsoft, Windows Media, Windows are registered trademarks of Microsoft Corporation.
2TAS5766MDCAEVM SLOU382–June 2014
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated

www.ti.com Hardware Overview
1.2 TAS5766MDCAEVM Functions
The TAS5766MDCAEVM is controlled by the PPCMB. The PPCMB sends I2C commands from PPC to
the TAS5766M. Upon PPC execution and connection, the TAS5766M is put in software mode.
The digital audio data input to the TAS5766MDCAEVM is sent from PPCMB and is selectable from USB
audio, optical SPDIF, coaxial SPDIF, and analog ADC sources. When a digital audio data input is
selected, the PPC automatically sends appropriate scripts to the device in use.
1.3 TAS5766MDCAEVM Detailed Operations
Upon power-on, the PPCMB uses USB audio input (default). The I2S signals, LRCLK, SCLK, SDIN, and
MCLK, come from the TAS1020B. The Microsoft®Windows Media®player can stream audio. The
TAS1020B enumerates as the following device on the Microsoft Windows®operating system: USB audio
(USB-AudioEVM), human interface devices and USB composite device, see Figure 2.
Figure 2. Device Manager
3
SLOU382–June 2014 TAS5766MDCAEVM
Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated

TAS5766MDCAEVM Setup www.ti.com
2 TAS5766MDCAEVM Setup
This section describes the TAS5766MDCAEVM setup and software installation. Since PPCMB connects to
one of the device under test (DUT) EVMs, it is necessary to show the connection in this section. The
TAS5766MDCAEVM is used for this purpose.
2.1 Hardware Setup
Figure 3 shows the EVM with the parts labeled.
Figure 3. PPCMB and TAS5766MDCAEVM Connection
Hardware requirements:
• Desktop or laptop PC running Windows 7
• Power supply 4.5–26.4 VDC
• Speakers and cable
• A USB micro type B cable
• Audio source: This can be a DVD player with the appropriate SPDIF cable or Windows Media Player
from Windows XP or Windows 7
Setup procedure:
• Plug in the USB cable from the PC to the PPCMB; the USB Lock LED (blue) is illuminated
• Connect the PPCMB to the TAS5766MDCAEVM
• Connect the PSU to TAS5766MDCAEVM and turn on the power. 5-V and 3.3-V LEDs are illuminated.
• If an optical SPDIF source is used, the blue SPDIF clock-locked LED is illuminated
• Disregard the orange LED indicating the energy threshold (ET) level is exceeded. Clearing the ET
value turns the orange LED off.
4TAS5766MDCAEVM SLOU382–June 2014
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated

www.ti.com TAS5766MDCAEVM Setup
2.2 Software Installation
Download the PurePath Console (PPC) GUI from the PurePath Console folder. The TI website has the
latest release of the GUI.
Execute the GUI installation program, Setup_PurePathConsole_Main_vxx_revxx.exe. Once the program
is installed, the program group and shortcut icon is created in Start →Program →Texas Instruments Inc
→PurePath Console →Choose Target. The Target Selection window is displayed; select TAS5766M –
Smart Amplifier, as shown in Figure 4.
Figure 4. Target Selection List
If the device is not listed in the Target Selection list, click on Add Target and Windows Explorer displays.
Navigate to the folder containing the target .ppc files (plugins) and choose the device plugin. Make sure
that the plugin has the same version and revision number as the PPC you are using.
Figure 5. Add Target List
5
SLOU382–June 2014 TAS5766MDCAEVM
Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated

Using the PurePath Console with the TAS5766MDCAEVM Board www.ti.com
Figure 6. PPCMB and TAS5766MDCAEVM
The green LED on the bottom left corner of the PPC window indicates the initialization of TAS5766M is
valid.
The PPCMB is initialized with the USB audio (USB-AudioEVM) selected. Streaming audio from the USB
host is routed to the TAS5766M.
If an optical input is used, click on the OPT IN symbol on the PPC software, the I2S is then routed with
this signal. Likewise, with a COAX/SPDIF input using the COAX IN symbol. If an analog input is used,
click on the LINE IN symbol on the PPC software, the ADC (PCM3168A) is the source of I2S data.
• On the PPCMB, the USB blue LED is on, the green LEDs for 3.3 V and 5 V are on
• On the PPC, the green LED on the bottom left corner is on
3 Using the PurePath Console with the TAS5766MDCAEVM Board
The TAS5766MDCAEVM is initialized upon PurePath Console startup. Audio is streaming to the speakers
if Windows Media (or similar program) is playing and mini-USB EVM is selected in the sound playback
properties. The following indicators show both the PPC GUI and TAS5766MDCAEVM are operating
correctly:
3.1 TAS5766M Main Tab
Figure 6 shows the DUT tab as displayed when the PPC GUI starts up. Here, you can click on the
TAS5766M icon and it directs you to the device block diagram.
6TAS5766MDCAEVM SLOU382–June 2014
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated

www.ti.com Using the PurePath Console with the TAS5766MDCAEVM Board
3.2 TAS5766M Block Diagram Tab
This tab, illustrated in Figure 7, shows the device major blocks. Some of the blocks are selectable. When
a block is selected (double click), it shows pop-up settings for the particular setting.
Figure 7. TAS5766M Block Diagram
7
SLOU382–June 2014 TAS5766MDCAEVM
Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated

Using the PurePath Console with the TAS5766MDCAEVM Board www.ti.com
3.3 Pop-Up Windows
For TAS5766M, there are several settings that are done via I2C. The GUI facilitates these settings
seamlessly using the pop-up windows seen in Figure 8 and Figure 9.
Figure 8. Smart Amplifier GUI Pop-Up
8TAS5766MDCAEVM SLOU382–June 2014
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated

www.ti.com Using the PurePath Console with the TAS5766MDCAEVM Board
Figure 9. Biquad Block Pop-up
9
SLOU382–June 2014 TAS5766MDCAEVM
Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated

Using the PurePath Console with the TAS5766MDCAEVM Board www.ti.com
3.4 Direct I2C Access Tab
I2C registers read and write can be performed on this tab (see Figure 10). Type in the device I2C address
and click Set. On the Direct I2C Read/Write box, enter a valid I2C register for read and type in both valid
register and data for write.
Figure 10. Direct I2C Access
3.5 Device Registers Tab
Figure 11 shows the current I2C registers values (hexadecimal and decimal) in the TAS5766M.
Figure 11. Device Registers Tab
10 TAS5766MDCAEVM SLOU382–June 2014
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated