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Texas Instruments TPA5050EVM - User guides
User's Guide
SLOU183 – June 2006
TPA5050EVM
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5
Contents
Introduction .......................................................................................... 1
Software ............................................................................................. 2
Operation ............................................................................................ 6
Reference ............................................................................................ 8
TPA5050EVM Schematic Diagram ............................................................. 12
List of Figures
1
2
3
4
5
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7
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9
10
TPA5050 in I2S Mode With Separate Delays for Left and Right Channels ................. 3
TPA5050 in I2S Mode With Frame Delay........................................................ 4
TPA5050 in Right-Justified Mode ................................................................ 5
TPA5050 in I2S Mode – Unable to Communicate .............................................. 6
Top Layer of the TPA5050EVM .................................................................. 7
Bottom Layer of the TPA5050EVM .............................................................. 8
TPS5050EVM Top Layer .......................................................................... 9
TPA5050EVM Second Layer ..................................................................... 9
TPA5050EVM Third Layer ....................................................................... 10
TPA5050EVM Bottom Layer..................................................................... 10
List of Tables
1
1
Introduction
1.1
Description
Bill of Materials .................................................................................... 11
The TPA5050 evaluation module (EVM) consists of a single TPA5050 audio delay device, along with other
external components mounted on a printed-circuit board (PCB) that can be used to digitally delay either
the left, right, or both channels by up to 8191 samples (with a 48-kHz sampling rate, that equates to more
than 170 ms of delay).
The TPA5050EVM is designed to work seamlessly with the TI Input USB board, but can function as a
stand-alone board for pass-through testing in any system. All that is required is an I2S audio source, an
I2C controller, and a 5-V supply.
The TPA5050EVM also includes an onboard digital-to-analog controller (DAC), the PCM1606, which can
convert I2S or left-justified data to an analog out. The analog out is filtered on the board and can be
viewed with a scope probe.
National Instruments is a trademark of National Instruments Corporation.
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Software
1.2
2
TPA5050EVM Specifications
+5 V
Supply Voltage
5V
IDD
Supply current
150 mA maximum
IDD (with TI Input USB board connected)
Supply current
500 mA maximum
Software
The included compact disk (CD) has all the software and drivers necessary to properly operate the
TPA5050EVM with the TI Input USB board. This software is designed to work only with personal
computers (PC). The installation software consists of TPA505x Interface SAA, Command Tool, and .Net
Framework 1.1.
2.1
Installation
1. Open up the CD, and browse the directory named TPA505x HD GUI Installer.
2. Click on setup.exe. The installer will then initialize.
3. Next, the user must choose the directories in which to install the software. The default directory for the
TPA505x Interface SAA software is C:\Program Files\Texas Instruments Inc\, and the default directory
for the National Instruments™ files is C:\Program Files\National Instruments\. Other directories may be
used, but for purposes of convenience, the default directories are recommended.
4. Once the directory selection has been made, click next to proceed.
5. The National Instruments™ License Agreement appears. It is necessary to read and accept this
agreement to continue with the installation.
6. Once the National Instruments™ License Agreement has been accepted, another window indicating
which components are to be installed appears. It should read Adding or Changing - TPA505x Interface
SAA Files. Click next to proceed.
7. The TPA505x SAA Interface program then installs the necessary files.
8. Once the TPA505x SAA Interface program has been installed, the setup program begins installing
Command Tool 6.0. The Command Tool License Agreement must be read and accepted for
installation to continue.
9. On acceptance of the Command Tool License Agreement, .Net Framework 1.1 is installed. This
installation procedure may take a while. When it is finished, click ok.
10. Command Tool 6.0 proceeds to configure the new software. When it is finished, click Finish.
11. Power up the TI Input USB Board (see the Operation section in this document), and then connect the
USB cable from the computer to the TI Input USB Board. A message pops up stating that the
computer has found new hardware. Shortly after that message appears, the computer finds and installs
the correct drivers for it.
2.2
Software Use
The TPA5050 software graphical user interface (GUI) is designed to allow the user to control the TPA5050
by an I2C bus.
1. Select the I2C address of the EVM by entering the address number under the I2C Address (0-7)
section. The default for the program is 0. The default for the EVM is also 0. The number in the program
corresponds to the last three digits of the I2C address of the device (ADD2, ADD1, and ADD0), which
can be controlled by installing or removing jumpers J5, J4, or J3.
2. Select the mode of operation by clicking on the appropriate circle under Stream Type.
3. The right and left delays can be adjusted by turning the knob to the desired number of delay samples,
or simply entering the number in the box provided (see Figure 1).
4. The right and left delays can be tied together by clicking on the R Track L 1 OFF/ON box to the right of
the Right Delay knob.
5. The delay also can be controlled with the Frame Delay option. Simply click on the Frame Delay Mode
1 ON/OFF box, and the frame delay options become available. Frame delay mode affects both left and
right channels simultaneously (see Figure 2).
2
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Software
6. Clicking on the Right Justified mode under Stream Type brings up a hidden window, called Packet
Length. Through this, the number of packet lengths to be delayed can be entered (see Figure 3).
7. The option Bypass simply sets the TPA5050 to pass the data through, without doing any manipulation
to it.
8. The I2C Status display at the bottom right indicates whether the device and the computer are
communicating properly. A red status bar indicates a problem. A green status bar indicates the device
and computer are talking (see Figure 4). Possible solutions to the red status bar problem are to hit the
reset button on the TI Input USB board, check to see that all cables are properly connected, restart the
TPA5050 GUI, remove and then re-insert the USB cable into the computer, reboot the computer, or
re-install the software.
9. The list of registers on the right side of the screen (0x01…0x07) indicate what values were last written
to that particular register. The TPA5050 only has seven registers, and therefore only the displays in
0x01 through 0x07 are valid. The rest are for use with the TPA5051.
10. The channel selection tab is designed for use with the TPA5051, which has two channels. The
TPA5050 has only one channel, and therefore only the Channel 1 tab is valid.
Figure 1. TPA5050 in I2S Mode With Separate Delays for Left and Right Channels
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Software
Figure 2. TPA5050 in I2S Mode With Frame Delay
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Software
Figure 3. TPA5050 in Right-Justified Mode
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Operation
Figure 4. TPA5050 in I2S Mode – Unable to Communicate
3
Operation
3.1
Quick Start List for Use With the TI Input USB Board
Follow these steps to use the TPA5050EVM with the TI Input USB board. This requires a digital or analog
audio source, a 5-V power supply, and the included USB and ribbon cables.
3.2
Power Supply
1. Ensure that all external power sources are set to OFF
2. Connect an external regulated power supply set to 5 V to the module +5V (J7) and GND (J6), taking
care to observe marked polarity.
3.3
EVM Preparation
1. Ensure that the shunts are fully installed on jumpers J1 and J2. This jumper setting sets the operating
mode of the PCM1606 to I2S.
2. Install the shunts across J3, J4, or J5, to set the I2C address of the TPA5050. J3, J4, and J5
correspond to ADD0, ADD1, and ADD2, respectively. Installing the shunt across a given jumper pulls
that pin high. The default is 000. Installing a shunt across J3 sets the address to 001.
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Operation
3. Connect the 34-pin ribbon cable between header J800 on the TI Input USB board and header H1 on
the TPA5050EVM.
4. Connect the 16-pin ribbon cable between header J850 on the TI Input USB board and header H3 on
the TPA5050EVM.
5. Connect the USB cable from the USB jack on the PC to the J350 USB Interface on the TI Input USB
board.
6. For additional delay, another TPA5050EVM can be added in series using the 16-pin and 34-pin ribbon
cables.
Note:
No pullup resistors are installed on the TPA5050EVM. Doing so interferes with the
initialization of the TI Input USB board in certain circumstances. However, the pads for the
pullup resistors, including SDA and SCL (R13 and R14, respectively), are available on the
EVM for populating if the EVM is to be used in a stand-alone fashion
6
1
2
3
4
Figure 5. Top Layer of the TPA5050EVM
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Reference
Figure 6. Bottom Layer of the TPA5050EVM
3.4
Operation
1. Turn on the power supply for the TPA5050EVM.
2. Depress the reset button on the TI Input USB board
3. Insert a signal source into the TI Input USB board. If it is an analog source, insert it into the jack
labeled CH1+2.
4. If the source is digital, insert it into either the RCA jack or the optical jack, and ensure that the switch
between them is selected properly.
5. Play the music or other source.
6. Use the GUI to mute the left or right channels, and to delay them
Note: The TI Input USB board is designed to output I2S only.
7. Use scope probes to view both delayed and nondelayed signals via the DAC. TP1 and TP2 (left and
right, respectively) and TP3 and TP4 (left and right, respectively) are the original signals.
8. External amplifiers can be connected to the output of the PCM1606; however, the supplied AGND test
point should be used as the ground reference for external amplifiers. Consult the PCM1606 data sheet
for more information regarding this topic.
4
Reference
8
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Reference
4.1
TPA5050EVM PCB Layers
Figure 7. TPS5050EVM Top Layer
Figure 8. TPA5050EVM Second Layer
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Reference
Figure 9. TPA5050EVM Third Layer
Figure 10. TPA5050EVM Bottom Layer
10
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Reference
4.2
TPA5050EVM Bill of Materials
Table 1. Bill of Materials
Part No.
QTY Value
Description
Distributor No. (1)
Manufacturer
Part No.
R1, R2, R3,
R4, R5
5
100k
100K, 1/10W, 0603, 5%
P100KGCT-ND
Panasonic
ERJ-3GEYJ104V
R6, R7, R8,
R9
4
10k
10k, 1/10W, 0603, 5%
P10KGCT-ND
Panasonic
ERJ-3GEYJ103V
R10, R11,
R12, R13,
R14
DNP 2k
2k, 1/10W, 0603, 5%
P2.0KGTR-ND
Panasonic
ERJ-3GEYJ202V
R15
1
39
39-Ω, 1/10W, 0603, 1%
311-39.0HRCT-ND
Yageo
RC0603FR-0739RL
R16
1
0Ω Jumper
0-Ω, 1/4W, 1206, 5%
P0.0ETR-ND
Panasonic
ERJ-8GEY0R00V
R17
1
470
470-Ω, 1/10W, 0603, 5%
P470GTR-ND
Panasonic
ERJ-3GEYJ471V
C1, C2, C3,
C4, C6, C7,
C8
7
0.1µF
0.1µF, X7R, ±10%, 10V, Ceramic, 0603
399-1095-1-ND
Kemet
C0603C104K8RACTU
C5
DNP 0.1µF
0.1µF, X7R, ±10%, 10V, Ceramic, 0603
399-1095-1-ND
Kemet
C0603C104K8RACTU
C9, C10,
C11, C12
4
560pF
560pF, NPO, ±5%, 50V, Ceramic, 0603
PCC2148CT-ND
Panasonic
ECJ-1VC1H561J
C13, C17,
C18
3
10µF
10µF, Tantalum, ±20%,16V, Size A
399-3105-1-ND
Kemet
T494A106M016AS
C14, C15
2
1µF
1µF, X5R, ±10%, 10V, Ceramic, 0603
399-3118-1-ND
Kemet
C0603C105K8PACTU
C16
1
1µF
1µF, X5R, ±10%, 16V, Ceramic, 0805
478-1411-2-ND
AVX
0805YD105KAT2A
L1
1
600-Ω Ferrite
Bead
600-Ω Ferrite Bead, 0805, 500mA, 200 mΩ
DCR
445-1554-2-ND
TDK
MMZ2012R601A
L2
1
0-Ω Jumper
0-Ω Jumper, 1/8W, 0805, Ceramic
P0.0ACT-ND
Panasonic
ERJ-6GEY0R00V
D1
1
Red LED
Red LED, 0805
67-1552-1-ND
Lumex
SML-LXT0805IW-TR
H1, H2
2
34 Pin
Header
34 Pins, 2 Rows, 2,54mm Pitch Vertical
Male, Center Slot Polarized
Molex
87834-3411
OR AMP 104338-7
H3, H4
2
16 Pin
Header
16 Pins, 2 Rows, 2,54mm Pitch, Vertical
Male, Center Slot Polarized
Molex
87834-1611
TP1, TP2,
TP3, TP4
DNP
Test Points
J1, J2, J3,
J4, J5
5
Jumper, Position, 2mm Header
2163S-36-ND
Norcomp
2163-36-01-P2
J1, J2, J3,
J4, J5
5
2mm Shunts
SPE1302-ND
Delphi 2JM-G
J6, J7
2
Banana Jack with Knurled Thumbnut
J587
Johnson 111-2223-001
U1
1
TPA5050
Audio Delay, 16 Pin QFN, RSA Designation
Texas Instruments
U2
1
PCM1606
DAC, 20 Pin, SSOP
Texas Instruments
U3
1
TPS73233
OR
TPS73633
LDO, 5 pin, SOT-23, DBV designation
Texas Instruments
U4
1
SN74ABT827 10-bit buffer, 24 pin, PW package
Texas Instruments
U5
DNP SN74ABT827 10-bit buffer, 24 pin, PW package
Texas Instruments
(1)
Shunts
Distributor is Digikey, unless otherwise specified.
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TPA5050EVM Schematic Diagram
Table 1. Bill of Materials (continued)
5
Part No.
QTY Value
Description
Distributor No. (1)
Manufacturer
Part No.
U6
1
EXB2HV390JV
8 Resistor array, 39-Ω, 5%, 1/16W
Y1390TR-ND
Panasonic
EXB-2HV390JV
U7, U8
2
EXB2HVR000V
8 Resistor array, 0-Ω, 5%, 1/16W
Y1000CT-ND
Panasonic
EXB-2HVR000V
TPA5050EVM Schematic Diagram
The TPA5050EVM schematic diagram is appended to this page.
12
TPA5050EVM
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Tpa5050evm7noB.sch-1 - Wed May 24 14:58:58 2006
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EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the voltage supply range of 4.5 V to 5.5 V.
Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are
questions concerning the input range, please contact a TI field representative prior to connecting the input power.
Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the
EVM. Please consult the EVM User's Guide prior to connecting any load to the EVM output. If there is uncertainty as to the load
specification, please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than 85°C. The EVM is designed to
operate properly with certain components above 85°C as long as the input and output ranges are maintained. These components
include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of
devices can be identified using the EVM schematic located in the EVM User's Guide. When placing measurement probes near
these devices during operation, please be aware that these devices may be very warm to the touch.
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