Texas Instruments TAS5414BQ1PHDEVM User manual

TAS5414B and TAS5424B Evaluation Module
(EVM)
User's Guide
Literature Number: SLOU335
May 2012

Contents
1 Quick-Start Guide ................................................................................................................ 5
1.1 Overview .................................................................................................................. 5
1.2 Software Installation ..................................................................................................... 6
1.3 Connections .............................................................................................................. 6
1.4 Initial Power Up .......................................................................................................... 6
1.5 Basic Graphical User Interface Controls ............................................................................. 7
2 EVM Description ................................................................................................................. 7
2.1 Description of Inputs .................................................................................................... 7
2.2 Description of Outputs .................................................................................................. 7
2.3 Controls ................................................................................................................... 8
2.4 Indicator Description .................................................................................................... 9
3 Graphical User Interface ...................................................................................................... 9
3.1 Introduction ............................................................................................................... 9
3.2 Software Installation ..................................................................................................... 9
3.3 Hardware Installation ................................................................................................... 9
3.4 Using the GUI ............................................................................................................ 9
4 TAS5414/TAS5424B EVM Schematics .................................................................................. 11
5 Board Layouts .................................................................................................................. 15
6 Bill of Materials ................................................................................................................. 23
7 Related Documentation from Texas Instruments ................................................................... 25
2Table of Contents SLOU335–May 2012
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List of Figures
1 EVM to I2C Device Connections .......................................................................................... 5
2 Connections for Input, Speaker Loads, Power, and I2C............................................................... 6
3 End Panel for I2C Connections............................................................................................ 6
4 Main Window ................................................................................................................ 7
5 Wiring Harness for Power and Speaker Connections.................................................................. 8
6 Power and Speaker Connections to the EVM........................................................................... 8
7 TAS5414BPHD Top Layer ............................................................................................... 15
8 TAS5414BPHD Mid Layer Level 1...................................................................................... 15
9 TAS5414BPHD Mid Layer Level 2...................................................................................... 16
10 TAS5414BPHD Bottom Layer ........................................................................................... 16
11 TAS5414BPHD Top Silkscreen Overlay ............................................................................... 17
12 TAS5414BPHD Bottom Silkscreen Overlay............................................................................ 17
13 TAS5414BDKD Top Layer .............................................................................................. 18
14 TAS5414BDKD Mid Layer Level 1...................................................................................... 18
15 TAS5414BDKD Mid Layer Level 2...................................................................................... 19
16 TAS5414BDKD Bottom Layer ........................................................................................... 19
17 TAS5414BDKD Top Silkscreen Overlay ............................................................................... 20
18 TAS5414BDKD Bottom Silkscreen Overlay............................................................................ 20
19 TAS5424BDKD Top Layer .............................................................................................. 21
20 TAS5424BDKD Mid Layer Level 1...................................................................................... 21
21 TAS5424BDKD Mid Layer Level 2...................................................................................... 22
22 TAS5424BDKD Bottom Layer ........................................................................................... 22
23 TAS5424BDKD Top Silkscreen Overlay ............................................................................... 23
3
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List of Tables
1 Bill of Materials for TAS5414BPHD..................................................................................... 23
2 Bill of Materials for TAS5414BDKD..................................................................................... 24
3 Bill of Materials for TAS5424BDKD..................................................................................... 25
4List of Tables SLOU335–May 2012
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User's Guide
SLOU335–May 2012
TAS5414B and TAS5424B Evaluation Module (EVM) User's
Guide
The TAS5414B/TAS5424B evaluation module (EVM) is intended to be used to demonstrate the
capabilities of the device. All the device features can be accessed through the hardware and the software
graphical user interface (GUI) supplied. This user’s guide contains a description of the EVM and the GUI.
Included are the EVM schematics, bill of materials, and the board layout.
1 Quick-Start Guide
This section provides a guide to set up and power up the EVM without the details of its operation. For a
more-detailed description, read the complete user's guide.
1.1 Overview
The EVM consists of a single printed circuit board (PCB) mounted inside a metal chassis for EMC testing.
The EVM must have an external I2C controller board to function. The USB-to-I2C controller board connects
to a personal computer (PC) through a USB cable. The EVM connects to the I2C controller through a
supplied 6-pin DIN cable. The PC needs the graphical user interface (GUI) software to control the EVM.
See Figure 1 for the device connections.
Software is available on the enclosed CDrom and provides the GUI, this document, and any other
necessary documents. Hardware provided in the EVM modules consists of the EVM, an I2C controller
board, a USB cable, a 6-pin DIN cable, and speaker cables.
Figure 1. EVM to I2C Device Connections
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{
{
{
{
{
Standby Switch
6-pin DIN I C
Connector
2
Ch. 4
Ch. 3
Ch. 2
Ch. 1
PVDD
10-pin
connector for
speakers and
power
4 Audio RCA
Input
Connectors
Ch. 4
Ch. 3
Ch. 2
Ch. 1
I C
2Standby
OFF
Standby
ON
Fault
Clip OTW
Standby
Mute
Power
Quick-Start Guide www.ti.com
1.2 Software Installation
The software is provided on the TI Web site. Run the setup.exe program to install the GUI. For more
details, see Section 1.5,Basic Graphical User Interface Controls.
1.3 Connections
The connections are for an analog signal for the input, speaker loads, power, and I2C. The audio inputs
are made through the four RCA connectors. The power connectors and speaker connectors are made
using the 10-pin connector.
The I2C connections are made through a 6-pin DIN connector. The provided adapter PCB and cable
connect the EVM to the PC. The adapter PCB is an I2C-to-USB converter, which is a human-interface
device (HID) and is automatically recognized by the PC when connected. Therefore, no drivers are
needed.
The basic connections are: PVDD or power is connected to the EVM through the supplied 10-pin
connector with the twisted red and black wires. The speakers or loads are also connected through the
same 10-pin connector with the twisted red and white wires. The 6-pin DIN is connected to the I2C-to-USB
adapter board. See Figure 2 for EVM input details.
Figure 2. Connections for Input, Speaker Loads, Power, and I2C
1.4 Initial Power Up
Before applying power, check to make sure the standby control switch is in the Standby OFF position, as
shown in Figure 3. If the switch is in the Standby ON position, then at power up the I2C LED indicator on
the GUI is red (see Section 3.4.3 for more details).
Figure 3. End Panel for I2C Connections
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www.ti.com EVM Description
Apply power: the Standby, Mute, and Power LEDs should be on. The Fault LED may also be on, but not
necessarily. This indicates that the unit is powered, and the TAS5414B or TAS5424B is in Standby Mode
and Mute Mode. The fault indicated is an undervoltage fault during power up. This is normal and is
cleared by reading I2C Register 0x00 (the Read Faults button) twice. Reading the faults once clears the
faults, and the second read is to ensure that all the faults have been cleared.
1.5 Basic Graphical User Interface Controls
The default state for the device is mute. To unmute, click the Play All button at the top left of the window.
To mute, click the Mute All button. The main EVM window is show in Figure 4.
Figure 4. Main Window
2 EVM Description
2.1 Description of Inputs
2.1.1 Analog Inputs
The TAS5424B EVM provides balanced input and the TAS5414B EVM provides unbalanced (single-
ended) inputs. The four RCA jacks on either EVM are provided for the audio input. The unbalanced inputs
have the shield of the RCA connected to ground. The balanced inputs have the plus (+) input on the
center pin of the RCA and the minus (–) input on the shield. The balanced ground can be connected to
the chassis or Power– (GND).
2.1.2 Power
The EVM requires one dc power connection. The connection is made through a 10-pin supplied
connector. The black wire is ground and the red wire is connected to PVDD, which can range from 6 to 24
Vdc.
2.2 Description of Outputs
2.2.1 Speaker and Power Connections
The 10-pin connector on the EVM and the wiring harness provide the power connections and the speaker
connections. The power connection consists of a pair of red and black twisted wires, which correspond to
the plus (+) output and minus (–) output, respectively. This pair of wires must be attached to a power
supply.
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Ch. 4
Ch. 3
Ch. 2
Ch. 1
Power
EVM Description www.ti.com
The speaker connections consist of the remaining four pairs of red and white twisted wire. Each pair of red
and white wires corresponds with a channel. The red wire corresponds to the plus (+) output, and the
white wire corresponds to the minus (–) output. These wires must be terminated to a speaker load or
resistive load.
See Figure 2 for more details on the 10-pin connector on the EVM, Figure 5 for more details about the
speaker cables, and Figure 6 for the speaker cables connection to the EVM.
Figure 5. Wiring Harness for Power and Speaker Connections
Figure 6. Power and Speaker Connections to the EVM
NOTE: Do not connect any of the speaker outputs to ground. The TAS5414B and TAS5424B have
full bridged outputs; connecting to ground triggers a fault.
The outputs can be paralleled by connecting the plus (+) of one channel to the plus (+) of the other
channel. The minus (–) connection of one channel and the minus (–) connection of the other channel must
be connected also. See the data sheet for more details on parallel outputs (PBTL).
2.3 Controls
2.3.1 Standby
The standby switch is located next to the 6-pin DIN I2C input connector. Having the toggle in the Standby
ON position forces the TAS5414B or TAS5424B into the standby mode. This is the same as a power-on
reset (POR). POR shuts down the device, and I2C is not functional.
Setting the switch to the Standby OFF position puts the device in the EVM into its default power up mode.
The I2C registers are set to their defaults. The amplifier output is in Hi-Z mode.
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www.ti.com Graphical User Interface
2.4 Indicator Description
There are five LED indicators on the chassis next to the standby switch. The LED farthest away from the
standby switch is for the 3.3 Vdc supply. The 3.3 V supply is needed for the LEDs and the standby circuit.
The other four LEDs indicate the four non-I2C output pins: FAULT , CLIP_OTW, STANDBY, and MUTE.
The FAULT and CLIP_OTW signals are also routed to the 6-pin DIN for the GUI. In normal play mode,
these four LEDs should not light.
3 Graphical User Interface
3.1 Introduction
The TAS5414B/TAS5424B GUI software is designed to demonstrate the features of the TAS5414B and
TAS5424B. It is also able to assist the applications programmer in generating and saving the desired
operating characteristics.
The TAS5414B/TAS5424B GUI has a feature by which it can log the I2C data being sent to the device.
This can be helpful to the programmer in understanding the I2C commands needed for proper function.
3.2 Software Installation
The GUI software is available on the CDrom provided with the EVM. Run the setup.exe program on a
personal computer (PC) with the Windows OS to install the GUI.
The software is currently supported up to Windows XP and is not supported by Windows 7.
The PC may need to connect to the internet to download the Microsoft .Net 2.0 environment, if it is not
already on the PC.
3.3 Hardware Installation
In the EVM package is a small PCB labeled USB2IIC2 on the PCB. This is the USB-to-I2C converter to
communicate from the PC to the EVM. Connect the USB cable to the PC and the PCB. Connect the 6-pin
cable to the connector labeled I2C on the converter PCB to the 6-pin connector on the EVM. The USB
connection provides power for this card. The PC should automatically connect to the USB-connected
PCB. See Figure 1,EVM to I2C Device Connections, for more details.
3.4 Using the GUI
3.4.1 The Main Window
3.4.1.1 TAS5414 Control Panel
The control panel consists of six buttons that perform basic functions on all four channels.
Reset: This button sends a software reset to the device via I2C. It is equivalent to sending 0x9F to register
0x0C. All the I2C defaults are restored.
Read Faults: This button reads the two fault registers 0x00 and 0x01 and reports the data to the Device
Status Panel
Load Diag: This button runs a script to perform the built-in load diagnostics and reports any faults to the
Device Status Panel. The details are displayed for each channel.
Play All: This button uses I2C to write 0x00 to register 0x0C which places all four channels into play
mode.
Mute All: This button uses I2C to set all channels to mute mode by writing 0x10 to register 0x0C. All
channels switch at 50% duty cycle, and no signal will pass from the input to the output.
Hi-Z All: This button places all four channel outputs into a high-impedance state by writing 0x1F to
register 0x0C. The device is first placed in mute. The Low-Low state is then invoked. Lastly, the outputs
are placed in Hi-Z.
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3.4.2 Device Status Panel
Device Panel Title: The title at the top of the Device Status Panel shows which device the GUI is set to
communicate. The four options are: Master, Slave1, Slave 2, and Slave 3. This is changed in the menu
item Device Select.
Global: This provides fault feedback from the device. If a fault occurs a red Fault is indicated. Read the
fault detail in the register 0x00 and 0x01.
Temperature: This shows the temperature of the device. When the device is below 125°C, the color is
green. At Level 1 OTW, the color is yellow. At Level 2 OTW, the color is orange. At Level 3 OTW, the
color is red.
Channel 1-4: These four items provide individual channel output states: Hi-Z, Mute, Low-Low, and Play.
The gain setting will be displayed with the play indication.
Fsw: This item provides the switching frequency of the outputs.
3.4.3 Connection Status Panel
There are two LED indicators to provide connection status.
USB: This indicator is gray when there is no USB connection to the USB2II2C PCB. The I2C LED is off.
The indicator is green when a connection is good.
I2C: This indicator is red when there is a USB connection, but no I2C connection. A green indicator shows
that I2C communication is functioning properly. If the LED is off, then there is no USB connection.
3.4.4 I2C Log Panel
All the I2C commands that are sent or received by the TAS5414B and TAS5424B are shown in this panel
except for I2C polling information. The displayed data can be copied to the clipboard for a programming
aid.
This type of information can be controlled by the I2C Log menu item. An R indicates a value read from the
device and a W indicates a value sent to the device. Valuable comments are also provided. Polling I2C
reads are not shown to prevent over-running the panel with background reads. See Section 3.4.7 for
further details on each tab.
3.4.5 Register Overview Panel
This panel provides the hexadecimal (hex) data for each I2C register. The hex data in the control registers
can be directly changed here and sent to the device with the Apply button. Any changes made to the data
are cleared by clicking the Cancel button. The Register Detail panel is changed either by changing the hex
value of the register directly or by clicking on the register and changing the specific bit in the Register
Detail panel. (See Section 3.4.6)
3.4.6 Register Detail Panel
This panel provides a detailed view of each register. By clicking on a register in the Register Overview
panel, the details of that register are shown. Each bit has its description and its value shown by the
checkbox. A checkbox with a check mark indicates a logical 1 and an unchecked checkbox indicates a
logical 0. Changes to each bit can be made by clicking on the checkbox. The changes are sent to the
device by clicking on the Apply button in the Register Overview panel.
3.4.7 Menu
File: In this menu, the Exit function can be found at the bottom of the drop-down menu.
Device Select: The I2C device select value can be changed in the Menu. For the EVM, use the default
value, which is Master.
Macros: In this menu, macros can be used. Macros are currently not being implemented at this time.
Custom Macros: This allows the users to create then save their own macros for later use.
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Preloaded Macros: This menu item provides a list of built-in macros to perform typical I2C routines.
Read: The Read panel controls are located in this menu
Fault Registers: When selected, the values of the fault registers are displayed in the I2C log. Note that
reading fault registers is different from reading faults. The data in a fault register is cleared on read.
The actual value displayed may show the fault, but the value in the device register will be cleared. A
second read of the fault registers will show a cleared fault register.
Load Diagnostic Registers: When selected, the values of the load diagnostic registers are read.
Status Registers: When selected, the values of the status registers are read.
Control Registers: When selected, the values of the control registers are read.
All Registers: When selected, the values of all the registers are read.
Options: The Options panel controls are located in this menu
Crosstalk Compensation Enabled: When selected, Crosstalk is optimized. When this option is
disabled, the standard operation optimizes PSRR.
180 Phase Difference: When selected, the channels switch at 180° phase difference
Switching Frequency: When selected, the switching-frequency setting for AM avoidance can be
changed to 357 kHz or 500 kHz.
All Channels Gain: When selected, the gain on all the channels can be changed to 12 dB, 20 dB, or
32 dB.
I2C Log: The I2C Log panel controls are located in this menu.
Enabled: When selected, this menu option shows the I2C Log panel. When disabled, the I2C Log panel
is hidden.
Show I2C Reads: When selected, this menu option shows the values read from the device. These are
indicated with a R.
Show I2C Writes: When selected, this menu option shows the values that are sent to the device.
These are indicated with a W.
Show Comments: When selected, this menu option shows the comments. The comments are not
shown when this item is not selected.
Clear: This menu item clears the log data. The data is lost.
I2C Polling: The I2C Polling panel controls are located in this menu
Enabled: When selected, the I2C actively samples the status registers specifically. When I2C Polling is
disabled, there is no guarantee that the register readings are valid.
Rate: When selected, the poll rate can be changed (in ms). The default setting is 250 ms.
Help: This menu item provides four items:
About: This provides the revision level of the software.
User Guide: This opens the User Guide in the AdobeTM AcrobatTM ReaderTM. Acrobat Reader
needs to be available on the PC.
Device Webpage: This opens the TAS5414B/TAS5424B web page at the Texas Instruments Web site
in the default browser. The most-current data sheets, application reports, and GUI software is available
for downloading.
Check for EVM Updates: This checks to see if any new updates of the GUI are available.
4 TAS5414/TAS5424B EVM Schematics
The schematics for the TAS5414BPHD, TAS5414BDKD, and TAS5424BDKD are shown on the following
pages.
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TAS5414/TAS5424B EVM Schematics www.ti.com
TAS5414BPHD EVM Schematics
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www.ti.com TAS5414/TAS5424B EVM Schematics
TAS5414BDKD EVM Schematics
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TAS5414/TAS5424B EVM Schematics www.ti.com
TAS5424BDKD EVM Schematics
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www.ti.com Board Layouts
5 Board Layouts
Figure 7. TAS5414BPHD Top Layer
Figure 8. TAS5414BPHD Mid Layer Level 1
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Figure 9. TAS5414BPHD Mid Layer Level 2
Figure 10. TAS5414BPHD Bottom Layer
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Figure 11. TAS5414BPHD Top Silkscreen Overlay
Figure 12. TAS5414BPHD Bottom Silkscreen Overlay
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Figure 13. TAS5414BDKD Top Layer
Figure 14. TAS5414BDKD Mid Layer Level 1
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Figure 15. TAS5414BDKD Mid Layer Level 2
Figure 16. TAS5414BDKD Bottom Layer
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Figure 17. TAS5414BDKD Top Silkscreen Overlay
Figure 18. TAS5414BDKD Bottom Silkscreen Overlay
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