Texas Instruments TLV320AIC34EVM-K User manual

User's Guide
SLAU232–December 2007
TLV320AIC34EVM-K
This user's guide describes the characteristics, operation, and use of the TLV320AIC34EVM-K. This
evaluation module (EVM) allows the user to evaluate the TLV320AIC34 audio codec. The TLV320AIC34 is
a complete 4-channel audio codec with several inputs and outputs, extensive audio routing, mixing and
effects capabilities. A complete circuit description, schematic diagram and bill of materials are also
included. Note that the TLV320AIC34 only uses the I2C bus for register control. Any references to the SPI
control bus in this document is due to the presence of this interface on the USB-MODEVM motherboard.
The following related documents are available through the Texas Instruments web site at www.ti.com.
EVM-Compatible Device Data Sheets
Device Literature Number
TLV320AIC34 SLAS538
TAS1020B SLES025
REG1117-3.3 SBVS001
TPS767D318 SLVS209
SN74LVC125A SCAS290
SN74LVC1G125 SCES223
SN74LVC1G07 SCES296
Contents
1 EVM Overview ............................................................................................................... 3
2 EVM Description and Basics............................................................................................... 3
3 TLV320AIC34EVM-K Setup and Installation............................................................................. 8
4 TLV320AIC34EVM Software.............................................................................................. 10
Appendix A EVM Connector Descriptions ................................................................................... 36
Appendix B TLV320AIC34EVM Schematic .................................................................................. 40
Appendix C TLV320AIC34EVM Layout Views .............................................................................. 41
Appendix D TLV320AIC34EVM Bill of Materials ............................................................................ 44
Appendix E USB-MODEVM Schematic ...................................................................................... 45
Appendix F USB-MODEVM Bill of Materials ................................................................................ 46
Appendix G USB-MODEVM Protocol ......................................................................................... 48
List of Figures
1 TLV320AIC34EVM-K Block Diagram ..................................................................................... 4
2 Default Software Screen ................................................................................................... 9
3I
2C Address Selection Window .......................................................................................... 10
4 Default Configuration Tab................................................................................................. 12
5 Audio Input Tab ............................................................................................................ 13
6 Audio Interface Tab ....................................................................................................... 15
7 Clocks Tab ................................................................................................................. 16
8GPIOTab
................................................................................................................... 18
9 AGC Tab .................................................................................................................... 20
10 Left AGC Settings.......................................................................................................... 21
I2S, I2C are trademarks of Koninklijke Philips Electronics N.V.
Windows is a trademark of Microsoft Corporation.
LabView is a trademark of National Instruments.
All other trademarks are the property of their respective owners.
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11 Advanced.................................................................................................................... 21
12 Filters Tab .................................................................................................................. 22
13 ADC High Pass Filters .................................................................................................... 23
14 ADC Highpass Filter Settings ............................................................................................ 23
15 DAC Filters.................................................................................................................. 24
16 De-emphasis Filters........................................................................................................ 24
17 Enabling Filters ............................................................................................................ 25
18 Shelf Filters ................................................................................................................. 25
19 EQ Filters ................................................................................................................... 26
20 Analog Simulation Filters ................................................................................................. 26
21 Preset Filters ............................................................................................................... 27
22 User Filters ................................................................................................................. 27
23 3D Effect Settings ......................................................................................................... 28
24 Output Stage Configuration Tab ......................................................................................... 29
25 DAC/Line Outputs Tab .................................................................................................... 31
26 High Power Outputs Tab ................................................................................................. 33
27 Command Line Interface Tab ............................................................................................ 34
28 File Menu ................................................................................................................... 35
C-1 Assembly layer ............................................................................................................. 41
C-2 Top Layer.................................................................................................................... 41
C-3 Layer 3....................................................................................................................... 42
C-4 Layer 4....................................................................................................................... 42
C-5 Bottom Layer................................................................................................................ 43
List of Tables
1 USB-MODEVM SW2 Settings ............................................................................................. 5
2 List of Standalone Jumpers ................................................................................................ 5
3 List of Jumpers Connected to J17A (Digital Interface Signals)........................................................ 6
A-1 Block B Analog Interface Pin Out ........................................................................................ 36
A-2 Block A Analog Input/Output Connectors ............................................................................... 37
A-3 Block A and Block B Digital Interface Pin Out.......................................................................... 38
A-4 Power Supply Pin Out ..................................................................................................... 39
D.1 TLV320AIC34EVM Bill of Materials...................................................................................... 44
F-1 USB-MODEVM Bill of Materials.......................................................................................... 46
G-1 USB Control Endpoint HIDSETREPORT Request .................................................................... 48
G-2 Data Packet Configuration ................................................................................................ 48
G-3 GPIO Pin Assignments.................................................................................................... 51
2TLV320AIC34EVM-K SLAU232–December 2007
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1 EVM Overview
1.1 Features
1.2 Introduction
2 EVM Description and Basics
2.1 TLV320AIC34EVM-K Block Diagram
EVM Overview
•Full-featured evaluation board for the TLV320AIC34 4-channel audio codec.
•Modular design for use with a variety of digital signal processor (DSP) and microcontroller interface
boards.
•USB connection to PC provides power, control, and streaming audio data for easy evaluation.
•On-board microphone for ADC evaluation
•Connection points for external control and digital audio signals for quick connection to other
circuits/input devices.
The TLV320AIC34EVM-K is a complete evaluation kit, which includes a universal serial bus (USB)-based
motherboard and evaluation software for use with a personal computer running the Microsoft Windows™
operating system (Win2000 or XP).
The TLV320AIC34EVM is in Texas Instruments' modular EVM form factor, which allows direct evaluation
of the device performance and operating characteristics, and eases software development and system
prototyping. This EVM is compatible with the 5-6K Interface Evaluation Module (SLAU104) and the
HPA-MCUINTERFACE (SLAU106) from Texas Instruments and additional third-party boards which
supports the TI Modular EVM format.
The TLV320AIC34EVM-K is a complete evaluation/demonstration kit, which includes a USB-based
motherboard called the USB-MODEVM Interface board and evaluation software for use with a personal
computer running the Microsoft Windows operating systems.
The USB connection from the PC provides power, control, and streaming audio data to the EVM for
reduced setup and configuration. The EVM also allows external control signals, audio data, and power for
advanced operation, which allows prototyping and connection to the rest of the evaluation/development
system.
This section provides information on the analog input and output, digital control, power and general
connection of the TLV320AIC34EVM.
The TLV320AIC34EVM-K consists of two separate circuit boards, the USB-MODEVM and the
TLV320AIC34EVM. The USB-MODEVM is built around a TAS1020B streaming audio USB controller with
an 8051-based core.
The simple diagram below (Figure 1) shows the how the TLV320AIC34EVM is connected to the
USB-MODEVM. The USB-MODEVM Interface board is intended to be used in USB mode, where control
of the installed EVM is accomplished using the onboard USB controller device. Provision is made,
however, for driving all the data buses (I2C, I2S, etc.) externally. The source of these signals is controlled
by SW2 on the USB-MODEVM. Refer to Table 1 for details on the switch settings.
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2.1.1 USB-MODEVM Interface Board
EVM Position 2
EVM Position 1
TLV320AIC34EVM
Control Interface
TLV320AIC34
TAS1020B
USB 8051
Microcontroller
USB
IC
2
IS
2
Audio Interface
USB-MODEVM
EVM Description and Basics
The simple diagram shown in Figure 1 shows only the basic features of the USB-MODEVM Interface
board.
When connecting the TLV320AIC34EVM to the USB-MODEVM care must be used to avoid bending the
connecting pins. The two boards can only be connected in one way. It is suggested to first align with the
10-pin connectors (J15B on the TLV320AIC34EVM and J18A on the USB-MODEVM) and then gently
push all the connectors together until the boards are seated.
In the factory configuration, the board is ready to use with the TLV320AIC34EVM. To view all the functions
and configuration options available on the USB-MODEVM board, see the USB-MODEVM Interface Board
schematic in Appendix.
Figure 1. TLV320AIC34EVM-K Block Diagram
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2.2 Default Configuration and Connections
2.2.1 USB-MODEVM
2.2.2 TLV320AIC34EVM Jumper Locations
EVM Description and Basics
Table 1 provides a list of the SW2 settings on the USB-MODEVM. For use with the TLV320AIC34EVM,
SW-2 positions 1 through 7 should be set to ON (LO), while SW-2.8 should be set to OFF (HI).
Table 1. USB-MODEVM SW2 Settings
SW-2 Switch Number Label Switch Description
1 A0 USB-MODEVM EEPROM I2C Address A0
ON: A0 = 0
OFF: A0 = 1
2 A1 USB-MODEVM EEPROM I2C Address A1
ON: A1 = 0
OFF: A1 = 1
3 A2 USB-MODEVM EEPROM I2C Address A2
ON: A2 = 0
OFF: A2 = 1
4 USB I2SI
2S Bus Source Selection
ON: I2S Bus connects to TAS1020
OFF: I2S Bus connects to USB-MODEVM J14
5 USB MCK I2S Bus MCLK Source Selection
ON: MCLK connects to TAS1020
OFF: MCLK connects to USB-MODEVM J14
6 USB SPI SPI Bus Source Selection
ON: SPI Bus connects to TAS1020
OFF: SPI Bus connects to USB-MODEVM J15
7 USB RST RST Source Selection
ON: EVM Reset Signal comes from TAS1020
OFF: EVM Reset Signal comes from USB-MODEVM J15
8 EXT MCK External MCLK Selection
ON: MCLK Signal is provided from USB-MODEVM J10
OFF: MCLK Signal comes from either selection of SW2-5
Table 2 and Table 3 provide a list of jumpers found on the EVM and their factory default conditions.
Table 2. List of Standalone Jumpers
Default
Jumper Position Jumper Description
JMP1 2-3 When connecting 2-3, mic bias comes from the MICBIAS pin on the device; when connecting 1-2, mic bias is supplied from the
power supply through a resistor, which the user must install.
JMP2 Installed Connects on-board Mic to Left Microphone Input.
JMP3 Installed Connects on-board Mic to Right Microphone Input.
JMP4 Installed Provides a means of measuring IOVDD current.
JMP5 soldered DRVDD power.
JMP6 soldered DVDD power.
JMP7 soldered DRVDD power.
JMP8 soldered AVDD_DAC power.
JMP9 Installed Connects Analog and Digital Grounds.
JMP10 Open When installed, shorts across the output capacitor on HPLOUT_A; remove this jumper if using AC-coupled output drive.
JMP11 Open When installed, shorts across the output capacitor on HPLCOM_A; remove this jumper if using AC-coupled output drive.
JMP12 Open When installed, shorts across the output capacitor on HPROUT_A; remove this jumper if using AC-coupled output drive.
JMP13 Open When installed, shorts across the output capacitor on HPLOUT_B; remove this jumper if using AC-coupled output drive.
JMP14 Open When installed, shorts across the output capacitor on HPLCOM_B; remove this jumper if using AC-coupled output drive.
JMP15 Open When installed, shorts across the output capacitor on HPROUT_B; remove this jumper if using AC-coupled output drive.
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2.3 Block A Analog Signal Connections
2.3.1 Block A Analog Inputs
2.3.2 Block A Analog Output
2.4 Block A Digital Signal Connections
2.4.1 Block A Digital Inputs and Outputs
EVM Description and Basics
Table 2. List of Standalone Jumpers (continued)
Default
Jumper Position Jumper Description
JMP16 Installed When installed, shorts HPLCOM_A and HPRCOM_A. Use only if these signals are set to constant VCM and external feedback.
Also, switch SW1 must be in the "Capless" position when installed.
JMP17 Open When installed, shorts across the output capacitor on HPRCOM_A; remove this jumper if using AC-coupled output drive.
JMP18 Open Selects on-board EEPROM as Firmware Source. Note that for this EVM the Firmware Source EEPROM is on the USB-MODEVM.
JMP19 Installed When installed, allows the USB-MODEVM to hardware reset the device under user control
JMP20 Installed When installed, shorts HPLCOM_B and HPRCOM_B. Use only if these signals are set to constant VCM and external feedback.
JMP21 Open When installed, shorts across the output capacitor on HPRCOM_B; remove this jumper if using AC-coupled output drive.
Table 3. List of Jumpers Connected to J17A (Digital Interface Signals)
J17A
Default
Signals Position Jumper Description
BCLK_A pin 3 - pin 5 Connects Block A BCLK_A and Block B BLCK_B together for ease of evaluation. When Block A and Block B use different digital
and clocks/data this jumper MUST be removed.
BCLK_B
WCLK_A pin 7 - pin 9 Connects Block A WCLK_A and Block B WLCK_B together for ease of evaluation. When Block A and Block B use different
and digital clocks/data this jumper MUST be removed.
WCLK_B
DIN_A pin 10 - pin Connects Block A DIN_A and Block B DIN_B together for ease of evaluation. When Block A and Block B use different digital
and 11 clocks/data this jumper MUST be removed.
DIN_B
DOUT_A open Connects Block A DOUT_A and Block B DOUT_B together for ease of evaluation. When Block A and Block B use different
and digital clocks/data this jumper MUST be removed. Also if both Block A and Block B are used together this jumper must be
DOUT_B removed due to potential conflict on the DOUT signals.
MCLK_A pin 17 - pin Connects Block A MCLK_A and Block B MCLK_B together for ease of evaluation. When Block A and Block B use different
and 19 digital clocks/data this jumper MUST be removed..
MCLK_B
The Block A analog inputs to the EVM can be connected through the analog headers J1, J2, J3, J4, J5,
and J6 around the edge of the board. The connection details of each header/connector can be found in
Table A-2.
The Block A analog outputs to the EVM can be connected through J7, J8, J9, J11,and J12 at the edges of
the board. The connection details can be found in Table A-2.
The digital inputs and outputs of the EVM can be monitored through J16 and J17. If external signals need
to be connected to the EVM, digital inputs should be connected via J14 and J15 on the USB-MODEVM
and the SW2 switch should be changed accordingly (see Section 2.2.1). The connector details are
available in Section A.2.
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2.4.2 Block A Digital Controls
2.5 Block B Analog Signal Connections
2.5.1 Block B Analog Inputs
2.5.2 Block B Analog Output
2.6 Block B Digital Signal Connections
2.6.1 Block B Digital Inputs and Outputs
2.6.2 Block B Digital Controls
2.7 Power Connections
EVM Description and Basics
The digital control signals can be applied directly to J16 and J17 (top or bottom side). The modular
TLV320AIC34EVM can also be connected directly to a DSP interface board, such as the
5-6KINTERFACE or HPA-MCUINTERFACE, or to the USB-MODEVM Interface board (included in this
EVM kit).
The Block B analog inputs to the EVM can be applied directly to J13 (top or bottom side). The connection
details of each header/connector can be found in Table A-1.
The Block B analog outputs to the EVM can be connected through J13 and J14 (top or bottom). The
connection details can be found in Table A-1.
The digital inputs and outputs of the EVM can be monitored through J16 and J17. If external signals need
to be connected to the EVM, digital inputs should be connected via J14 and J15 on the USB-MODEVM
and the SW2 switch should be changed accordingly (see Section 2.2.1). The connector details are
available in Section A.2.
The digital control signals can be applied directly to J16 and J17 (top or bottom side). The modular
TLV320AIC34EVM can also be connected directly to a DSP interface board, such as the
5-6KINTERFACE or HPA-MCUINTERFACE, or to the USB-MODEVM Interface board (included in this
EVM kit).
The TLV320AIC34 can be powered independently when being used in stand-alone operation or by the
USB-MODEVM when it is plugged onto the motherboard.
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2.7.1 Stand-Alone Operation
2.7.2 USB-MODEVM Operation
3 TLV320AIC34EVM-K Setup and Installation
3.1 Software Installation
TLV320AIC34EVM-K Setup and Installation
When used as a stand-alone , power is applied to J15 directly, making sure to reference the supplies to
the appropriate grounds on that connector.
CAUTION
Before applying power to the EVM you must verify that all power supplies are
within the safe operating limits as indicated in the TLV320AIC34 data sheet.
J15 provides connection to the common power bus for the TLV320AIC34EVM. Power is supplied on the
pins listed in Table A-4.
The TLV320AIC34EVM-K motherboard (the USB-MODEVM Interface board) supplies power to J15 of the
TLV320AIC34EVM. Power for the motherboard is supplied either through its USB connection or via
terminal blocks on that board.
The USB-MODEVM Interface board can be powered from several different sources:
•USB
•6Vdc-10Vdc AC/DC external wall supply (not included)
•Lab power supply
When powered from the USB connection, JMP6 should have a shunt from pins 1–2 (this is the default
factory configuration). When powered from 6V-10Vdc, either through the J8 terminal block or J9 barrel
jack, JMP6 should have a shunt installed on pins 2–3. If power is applied in any of these ways, onboard
regulators generate the required supply voltages and no further power supplies are necessary.
If lab supplies are used to provide the individual voltages required by the USB-MODEVM Interface, JMP6
should have no shunt installed. Voltages are then applied to J2 (+5VA), J3 (+5VD), J4 (+1.8VD), and J5
(+3.3VD). The +1.8VD and +3.3VD can also be generated on the board by the onboard regulators from
the +5VD supply; to enable this configuration, the switches on SW1 need to be set to enable the
regulators by placing them in the ON position (lower position, looking at the board with text reading
right-side up). If +1.8VD and +3.3VD are supplied externally, disable the onboard regulators by placing
SW1 switches in the OFF position.
Each power supply voltage has an LED (D1-D7) that lights when the power supplies are active.
The following section provides information on using the TLV320AIC34EVM-K, including set up, program
installation, and program usage.
Note: If using the EVM in stand-alone mode, the software should be installed per below, but the
hardware configuration may be different.
1. Locate installation file on the CD-ROM include with the EVM or download the latest version of the
software located on the AIC34 Product Page.
2. Unzip the installation file by clicking on the self-extracting zip file.
3. Install the EVM software by double-clicking the Setup executable and follow the directions. The user
may be prompted to restart their computer.
This should install all the TLV320AIC34 software and required drivers onto the PC.
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3.2 EVM Connections
TLV320AIC34EVM-K Setup and Installation
1. Ensure that the TLV320AIC34EVM is installed on the USB-MODEVM Interface board, aligning J13,
J14, J15, J16, J17 with the corresponding connectors on the USB-MODEVM.
2. Verify that the jumpers and switches are in their default conditions.
3. Attach a USB cable from the PC to the USB-MODEVM Interface board. The default configuration will
provide power, control signals, and streaming audio via the USB interface from the PC. On the
USB-MODEVM, LEDs D3-6 should light to indicate the power is being supplied from the USB.
4. For the first connection, the PC should recognize new hardware and begin an initialization process.
The user may be prompted to identify the location of the drivers or allow the PC to automatically
search for them. Allow the automatic detection option.
5. Once the PC confirms that the hardware is operational, D2 on the USB-MODEVM should light to
indicate that the firmware has been loaded and the EVM is ready for use. If the LED is not lighted,
verify that the drivers were installed and trying to unplug and restart at Step 3.
After the TLV320AIC34EVM-K software installation (described in Section 3.2) is complete, evaluation and
development using the target TLV320AIC34 can begin.
The TLV320AIC34EVM software can now be launched. The user should see an initial screen that looks
similar to Figure 2.
Figure 2. Default Software Screen
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4 TLV320AIC34EVM Software
4.1 I2C Address Selection
TLV320AIC34EVM Software
The following section discusses the details and operation of the EVM software.
Note: For configuration of the codec, the TLV320AIC34 block diagram located in the TLV320AIC34
data sheet is a good reference to help determine the signal routing.
When the software is run, a window appears which allows for selecting the I2C address of the
TLV320AIC34. This window (see Figure 3) has two controls for setting the state of ADDR_A and
ADDR_B. To allow proper communication with the EVM, these should match the settings of SW2 located
on the EVM (Table 2). When ADDR_A and ADDR_B are adjusted, the correct device address for Block A
and Block B will be shown. Note that the actual I2C address shown and the address for the software may
be different. This is done for programming reasons and the correct address should be used for system
development.
Figure 3. I2C Address Selection Window
Note: For operation of the EVM in the default state, no changes are required on this panel. The
default setting for the GUI software and the default setting for the EVM hardware are
configured so that Block A address is 0x30 and Block B address is 0x32 as shown. This
corresponds to SW2 on the TLV320AIC34EVM being in position LO-LO.
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