Texas Instruments TAS6422E-Q1 User manual

User’s Guide
TAS6422E-Q1 EVM
ABSTRACT
This manual describes the operations of the TAS6422EQ1EVM. The TAS6422EQ1EVM 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
• TAS6422E EVM operations (hardware and software)
Required equipment and accessories:
1. TAS6422E EVM
2. USB A male to micro B male cable
3. 1-2 resistive loads or speaker loads
4. 2-4 pair of wires stripped both ends
5. 2-mm slotted screwdriver
6. Optical audio source (optional)
7. Optical SPDIF cable (optional)
8. Desktop or laptop PC with Microsoft® Windows® 7 operating system
Table of Contents
1 Trademarks..............................................................................................................................................................................1
2 Hardware Overview................................................................................................................................................................ 2
3 Software Overview..................................................................................................................................................................4
4 Board Layouts, Bill of Materials, and Schematic...............................................................................................................20
5 Revision History................................................................................................................................................................... 29
List of Tables
Table 4-1. TAS6422EQ1EVM Bill of Materials...........................................................................................................................26
1 Trademarks
PurePath™ are trademarks of Texas Instruments.
Microsoft® and Windows® are registered trademarks of Microsoft Corporation.
All trademarks are the property of their respective owners.
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TAS6422E-Q1 EVM 1
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2 Hardware Overview
2.1 TAS6422E Evaluation Module Description
The TAS6422E-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 2-1.
Figure 2-1. TAS6422E-Q1 EVM
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The block diagram shows the TAS6422E EVM signal flow.
PVDD
4.5 Vdc to 26.4 Vdc
VBAT
4.5 Vdc to 18 Vdc
3.3 Vdc LDO
Audio Input
SPDIF
Optical
DIR9001
XMOS
I2C and USB Audio
Mux
2nd order
LC Filters
TAS6422E-Q1
Micro
USB
SPDIF Power Switch
3.3 Vdc
Standby Switch
Mute Switch
I2S input
Connectors
Speaker
Outputs
Input Power
Connector
Jumper
XMOS Enable Switch
Mute
/STBY
I2C
I2S
I2S
Fault
PVDD
VBAT
Figure 2-2. EVM Block Diagram
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TAS6422E-Q1 EVM 3
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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 3-1. 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.
Figure 3-2. PPC3 Window
When the window in Figure 3-2 is displayed, click on “sign in” to see TAS6422E EVM application. All of the apps
shown below may not be displayed for the user.
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Click on TAS6422E App box to download TAS6422E application. Installation window will pop up, then click
“Install”.
TAS6422E EVM box will appear in “Installed EVM Apps” section, see Figure 3-3. Click on TAS6422E box to
launch TAS6422E App.
Figure 3-3. Available Apps Window
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3.2 PurePath™ Console 3 – TAS6422E EVM Home Window
When the TAS6422E 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 “TAS6422E EVM – Offline” is displayed.
Figure 3-4. PPC3 Window
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There are three windows available with the TAS6422E EVM PPC3: Home Window, Register Map Window and
Device Monitor and Control Window.
Figure 3-5. TAS6422E EVM Home Window
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3.3 PurePath™ Console 3 – TAS6422E 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 TAS6422E.
Figure 3-6. TAS6422E EVM Register Map Window
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TAS6422E-Q1 EVM 9
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3.4 PurePath™ Console 3 – TAS6422E 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.
Figure 3-7. TAS6422E EVM Device Monitor and Control Window
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