Texas Instruments TPA6304-Q1 User manual

User’s Guide
TPA6304-Q1 Evaluation Module
Robert Clifton
ABSTRACT
This manual describes the operations of the TPA6304Q1EVM. The TPA6304Q1EVM is a stand-alone Evaluation
Module (EVM). The PurePath™ Control Console 3 GUI (PPC3) is used to initialize and operate the EVM.
Table of Contents
1 Required Equipment and Accessories:................................................................................................................................3
2 Hardware Overview................................................................................................................................................................ 4
2.1 TPA6304Q1 Evaluation Module Description...................................................................................................................... 4
2.2 TPA6304-Q1 Evaluation Module Functions....................................................................................................................... 5
3 Software Overview..................................................................................................................................................................6
3.1 PurePath™ Console 3 (PPC3) Access and Description.................................................................................................... 6
3.2 PurePath™ Console 3 – TPA6304Q1EVM Home Window................................................................................................8
3.3 PurePath™ Console 3 – TPA6304Q1EVM Register Map Window.................................................................................... 9
3.4 PurePath™ Console 3 – TPA6304Q1EVM Monitor & Control Window........................................................................... 10
4 TPA6304-Q1 Start Up............................................................................................................................................................ 11
4.1 TPA6304Q1EVM Setup....................................................................................................................................................11
4.2 TPA6304-Q1 Settings on Device Monitor & Control Window...........................................................................................12
4.3 TPA6304-Q1 Settings on Register Map Window............................................................................................................. 17
4.4 I2C Monitor Window.........................................................................................................................................................17
5 Board Layout, Schematic and Bill of Materials..................................................................................................................19
5.1 Board Layout....................................................................................................................................................................19
5.2 Schematic........................................................................................................................................................................ 21
5.3 Bill of Materials.................................................................................................................................................................24
Revision History.......................................................................................................................................................................28
List of Figures
Figure 2-1. TPA6304Q1EVM....................................................................................................................................................... 4
Figure 2-2. EVM Block Diagram.................................................................................................................................................. 5
Figure 3-1. PPC3 Download Window.......................................................................................................................................... 6
Figure 3-2. PPC3 Window........................................................................................................................................................... 6
Figure 3-3. Available Apps Window.............................................................................................................................................7
Figure 3-4. PPC3 Downloading App............................................................................................................................................7
Figure 3-5. PPC3 Installed Apps................................................................................................................................................. 8
Figure 3-6. TPA6304Q1EVM Home Window...............................................................................................................................8
Figure 3-7. TPA6304Q1EVM Register Map Window...................................................................................................................9
Figure 3-8. TPA6304Q1EVM Device Monitor & Control Window.............................................................................................. 10
Figure 4-1. TPA6304Q1EVM Connections................................................................................................................................ 11
Figure 4-2. Device Monitor & Control Window...........................................................................................................................12
Figure 4-3. Device State Control Section.................................................................................................................................. 12
Figure 4-4. Master Mode/Slave Mode Section.......................................................................................................................... 13
Figure 4-5. Channel Control Section......................................................................................................................................... 13
Figure 4-6. Miscellaneous Control Section................................................................................................................................ 13
Figure 4-7. Fault / Warning Signal Configuration Section..........................................................................................................14
Figure 4-8. Faults / Warnings Section........................................................................................................................................14
Figure 4-9. AC Load Diagnostics Section..................................................................................................................................15
Figure 4-10. DC Load Diagnostics Section................................................................................................................................15
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Figure 4-11. Spread Spectrum Control Section ........................................................................................................................ 15
Figure 4-12. Register Map Window........................................................................................................................................... 17
Figure 4-13. I2C Monitor Window - I2C Logging....................................................................................................................... 17
Figure 4-14. I2C Monitor Window - I2C Logging....................................................................................................................... 18
Figure 5-1. TPA6304Q1EVM Top.............................................................................................................................................. 19
Figure 5-2. TPA6304Q1EVM Bottom.........................................................................................................................................20
Figure 5-3. Schematic (Page 1).................................................................................................................................................21
Figure 5-4. Schematic (Page 2).................................................................................................................................................22
Figure 5-5. Schematic (Page 3).................................................................................................................................................23
List of Tables
Table 5-1. Bill of Materials..........................................................................................................................................................24
Trademarks
PurePath™ is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
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1 Required Equipment and Accessories:
1. TPA6304Q1EVM
2. USB A male to micro B male cable
3. Power Supply Unit (PSU) up to 18 V, 6 A capable
4. 1-4 resistive loads or speaker loads
5. 2-6 pair of wires stripped both ends
6. 2-mm slotted screwdriver
7. 1-4 RCA cables
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2 Hardware Overview
2.1 TPA6304Q1 Evaluation Module Description
The TPA6304Q1EVM is a stand-alone EVM. USB adapter is provided for a more thorough evaluation of the
device. Figure 2-1 shows the EVM board.
Figure 2-1. TPA6304Q1EVM
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Figure 2-2 shows the TPA6304Q1EVM signal flow:
3.3-V
LDO
3.3 V
4.5- to 18-V
Input
4.5-18 V
TPA6304
2nd
ORDER LC
FILTER
2nd
ORDER LC
FILTER
LED
Differential
Outputs
VBAT
XMOS GPIO
I2C
USB
External
Audio
Input SHUTDOWN
GPIO2
GPIO1
FAULT
USB (I2C)
Single-ended
Inputs
ANALOG
DC Blocking
Capacitors
1+
2+
3+
4+
INREF
GND
Figure 2-2. EVM Block Diagram
2.2 TPA6304-Q1 Evaluation Module Functions
• There are two switches
– Standby switch puts the device on or out of standby.
– XMOS Disable switch enables or disables the onboard XMOS.
• The board has 8 jumpers
– J3 enables or disables the onboard XMOS.
– J5 allows VBAT to be supplied by PVDD or another power supply.
– J11 ties INREF to GND.
– J12 and J13 allow for external I2C controller to run I2C commands the the TPA6304-Q1.
– J14, J15, and J16 allow multiple input channels to be tied to the same input source.
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3 Software Overview
3.1 PurePath™ Console 3 (PPC3) Access and Description
PPC3 is a server-based tool. Request access at PUREPATHCONSOLE: PurePath Console Graphical
Development Suite for Audio System design and Development. Once approval is given, download the software
from Texas Instruments mySecure Software site.
Figure 3-1. PPC3 Download Window
Run the installation program. Also download the PPC3 User Manual (slou408) for further instructions.
Figure 3-2 shows the window displayed when first running PPC3. Click Sign in to see TPA6304 EVM application.
Figure 3-2. PPC3 Window
Different Apps might be displayed in Figure 3-3 depending on the user's access.
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Figure 3-3. Available Apps Window
Click the TPA6304 EVM App box to download the TPA6304-Q1 application. An Installation window appears, next
click Install. Figure 3-4 shows the downloading progress of the application.
Figure 3-4. PPC3 Downloading App
The TPA6304 EVM box appears in the Installed EVM Apps section, see Figure 3-5. Click the TPA6304 EVM box
to launch the TPA6304 EVM App.
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Figure 3-5. PPC3 Installed Apps
3.2 PurePath™ Console 3 – TPA6304Q1EVM Home Window
There are three windows available with the TPA6304Q1EVM PPC3: Home Window, Register Map Window, and
Device Monitor & Control Window. When the TPA6304Q1EVM PPC3 is launched, the Home Window displays
(see Figure 3-6). If the EVM is powered on and the USB is connected to the PC, the Home Window displays the
Connect box in the bottom left hand corner. If the EVM is not powered on or the USB is not connected, only
TPA6304Q1EVM – Offline is displayed.
Figure 3-6. TPA6304Q1EVM Home Window
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3.3 PurePath™ Console 3 – TPA6304Q1EVM Register Map Window
Click on the Register Map Box in the Home Window to display the Register Map Window. The Register Map
indicates the current setting of all the registers in the TPA6304-Q1 device.
Figure 3-7. TPA6304Q1EVM Register Map Window
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3.4 PurePath™ Console 3 – TPA6304Q1EVM Monitor & Control Window
Click on Device Monitor & Control box in the Home Window to display Device Monitor & Control window.
Figure 3-8. TPA6304Q1EVM Device Monitor & Control Window
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4 TPA6304-Q1 Start Up
This section describes the TPA6304-Q1 start up procedure. Have all the equipment and accessories listed on
the first page of this document available.
4.1 TPA6304Q1EVM Setup
Figure 4-1. TPA6304Q1EVM Connections
Hardware and software connections:
• Desktop or laptop PC running Windows 7 or 10, open PPC3 GUI
• Connect 14.4-VDC PSU to the TPA6304Q1EVM
• Connect speakers or resistive loads to the TPA6304Q1EVM
• Connect USB micro cable from the PC to the EVM
• Set the STANDBY switch to down position and the XMOS DISABLE switch to the up position
• Turn on the PSU
• Connect the audio source – this can be a 3-mm stereo connector connected from the PC to the EVM as
shown in Figure 4-1
• At this point, 3.3V LED, and USB-LOCK LED are on
• On the PPC3 window, launch the TPA6304Q1EVM application
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• Click Connect at the bottom left corner of the window
• Click Device Monitor & Control
• Click on Play at the top left corner of the window
• On the PC make sure the volume level is set as desired
• On the EVM, first switch up the STANDBY switch
• The audio can now be streamed to the speakers
4.2 TPA6304-Q1 Settings on Device Monitor & Control Window
Most of the register settings are done on the Device Monitor & Control window. The TPA6304-Q1 Register Map
window is for reference.
Click the CONNECT button on the bottom left corner of the TPA6304Q1EVM application window, see Figure 3-6.
The LED next to the TPA6304Q1EVM changes from gray to green and the CONNECT button changes to a
DISCONNECT button.
Click on the TPA6304-Q1 Device Monitor & Control box, the window should now display Figure 4-2.
Figure 4-2. Device Monitor & Control Window
This window has 8 major sections: the Device State Control section, Channel Control section, Miscellaneous
Control section, Fault / Warning Signal Configuration section, Faults and Warnings section, AC Load Diagnostics
section, DC Load Diagnostics section, and Spread Spectrum Controls section.
4.2.1 Device State Control Section
This section allows the user to control all 4 channels at the same time instead of changing one channel at a time.
When Hi-Z is selected, all 4 channels are put in Hi-Z. The display for each channel in the channel control section
reflects these button selections.
Figure 4-3. Device State Control Section
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To the right hand side of the Device State Control section is the Master/Slave Mode Selector switch. The default
state of the device is Master Mode.
Figure 4-4. Master Mode/Slave Mode Section
4.2.2 Channel Control Section
Each channel has the same setting selections: Hi-Z, Mute, Play, Gain, Line Output mode and Speaker mode.
The drop down menu allows the user to select either Hi-Z, Mute or Play Mode for each channel.
The default gain for each channel is 28 dB. The other gain options are 10 dB, 16 dB and 22 dB. If another gain is
needed, select the button to the corresponding gain.
The default setting for each channel is Speaker mode. If Line Output is used select the Line Output button.
Figure 4-5. Channel Control Section
4.2.3 Miscellaneous Control Section
There are miscellanous settings that are available on the GUI for easy access (see Figure 4-6).
Figure 4-6. Miscellaneous Control Section
This device supports parallel bridged-tied load operations. Channels 1 and 2 can be one PBTL channel and
channels 3 and 4 can be the other. Before setting the channels to PBTL mode, connect the (+) terminals of
channels 1 and 2 and/or channels 3 and 4. Then connect the same channels together for their respective (-)
terminals. The device needs to be in standby before reconfiguring the output to PBTL.
The Clip Detect can be set to either disable or enable, with disable being the default setting.
The overcurrent (OC) has four level that can be changed via the drop-down menu in the OC box. The default
level is 1.
Overtemperature warning (OTW) can be programed using the pull-down menu to choose the OTW temperature.
The default setting is 130°C.
The output switching frequency (FSW) or Pulse Width Modulation (PWM) frequency is set at 2.1 MHz. The pull-
down menu on the Frequency box is used to change the PWM to 384kHz, 576kHz, and 2.3MHz.
Another feature this device has is being able to adjust at what THD level the clip detect goes off. The pull-down
menu on the Clip Level box allows the user to set the detect threshold to go off at either 1% THD, 2% THD, 3%
THD or 10% THD. 1% THD is the default value.
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PWM Mode allows the user to choose between a BD modulation scheme or a BDHE/1SPW modulation scheme.
BD modulation is the default value.
GPIO 1 and GPIO 2 pull-down menus have the same configuration options but are for their respective pins.
Each one can be used to output specific signals or as inputs depending on the setting chosen. The states that
can be selected for GPIO 1 and GPIO 2 are the following: Hi-Z, WarningZ, FaultZ, Clip Detect 1, Clip Detect 2,
Sync Out, DVDD, GND, Sync In, and Mute Z. WarningZ and FaultZ are the Warning and Fault output signals
and the MuteZ setting allows the device to have a hardware control mute pin. Default setting is Hi-Z for both
GPIO 1 and GPIO 2.
The final part of the Miscellaneous Controls section is the Fault Pin pull-down menu. This changes the
corresponding device fault pin. It can be selected to read out either FaultZ, WarningZ, Clip Detect 1 or Clip
Detect 2. FaultZ is the default setting.
4.2.4 Fault / Warning Signal Configuration Section
This section controls what the Fault and Warning signals report when selected. To get to this section click the
icon on the top right of the Miscellaneous Control Section. This changes the display to show Figure 4-7.
Figure 4-7. Fault / Warning Signal Configuration Section
The Warning signal can be set to report when a Clip, Invalid Clock, Overtemperature Shutdown (OTSD), Power
Fault, overtemperature warning (OTW), Temperature Gain Foldback (TGFB), or ILimit event is triggered. By
default, Warning does not have any event selected.
The Fault signal can be set to report when a Protective Shutdown, Invalid Clock, OTSD, Power Fault, DC fault
detection, Overcurrent (OC), or ILimit event is triggered. By default the Fault signal will report a fault only when a
DC, OC, or ILimit event is detected.
4.2.5 Faults / Warnings Section
The top right buttons on the Faults / Warnings box serve as controlling and monitoring faults. Clip enable route
the clip detection bit to the warning pin. This is displayed as a yellow LED on the EVM. Thermal enable route the
overtemperature warning bit to the warning pin. This is displayed as the same yellow LED on the EVM. The
Clear button clears all the faults and warnings. The Read button manually read the faults and warnings.
Figure 4-8. Faults / Warnings Section
4.2.6 AC Load Diagnostics Section
The AC load diagnostics report speaker impedance and phase. The diagnostics can be performed with one or all
four channels.
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Figure 4-9. AC Load Diagnostics Section
Select the correct output impedance and click the Start > button. Follow the pop up instructions to run the load
diagnostics.
Click on the icon located on the top right of the AC load diagnostics box to see the results.
4.2.7 DC Load Diagnostics Section
The DC load diagnostics report if a channel's output is short to power, short to ground, short to load, or open.
Figure 4-10. DC Load Diagnostics Section
Select the impedance of the load from 0.5 to 5 Ω. Click "Start >" and then click the icon on the top right of
the box to view results.
4.2.8 Spread Spectrum Control Section
The Spread Spectrum Controls Section allows the user to control features related to spread spectrum and
managing electromagnetic conductivity/interference.
Figure 4-11. Spread Spectrum Control Section
By default, spread spectrum is enabled. This can be disabled by clicking on the Spread Spectrum Enabled
button. To re-enable, simply click the box again.
Another button found in this section is the Automatic Channel Phasing. By default Automatic Channel Phasing is
disabled but can be enabled the same way as Spread Spectrum is.
The three drop-down menus, Dephase Ch2 to Ch1, Dephase Ch3 to Ch1, and Dephase CH4 to Ch1, all control
the channels output phases from each other. Each can be set to be either 0 degrees, 45 degrees, 90 degrees,
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135 degrees, 180 degrees, 225 degrees, 270 degrees or 315 degrees out of phase from channel 1. The default
values for Dephase Ch2 to Ch1, Dephase Ch3 to Ch1, and Dephase CH4 to Ch1 are 180 degree, 90 degree,
and 270 degree, respectively.
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4.3 TPA6304-Q1 Settings on Register Map Window
Select a particular register then double click on any bit, that isn't reserved, and the bit changes state. This state
is executed at the end of the click.
Figure 4-12. Register Map Window
4.4 I2C Monitor Window
The PPC3 has an I2C monitor and also configuration program options (see Figure 4-13).
Figure 4-13. I2C Monitor Window - I2C Logging
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When this window is first open, the round button is green. To record I2C commands, click on this button to turn it
red. This button can be clicked again to stop recording I2C commands. Doing this will turn the button back to
green. The recording can be saved for later use by clicking the save icon.
The I2C commands can also be copied to the clip board by clicking the icon next to trash bin icon.
Figure 4-14. I2C Monitor Window - I2C Logging
A set of I2C commands can be loaded and executed from this window. On the top right corner, click on the I/O
button to display the window in Figure 4-14. Write I2C commands here, or open an existing *.cfg file then click
the Execute button on the bottom left corner of the I2C Monitor window. The I2C commands are sent to the
device when the Execute button is pressed.
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5 Board Layout, Schematic and Bill of Materials
5.1 Board Layout
Figure 5-1. TPA6304Q1EVM Top
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Figure 5-2. TPA6304Q1EVM Bottom
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