Texas Instruments TLV320AIC32EVM User manual

User's GuideSBAU113 – November 2005
TLV320AIC32EVM and TLV320AIC32EVM-PDK User's
Guide
This user's guide describes the characteristics, operation, and use of theTLV320AIC32EVM, both by itself and as part of the TLV320AIC32EVM-PDK. Thisevaluation module (EVM) is a complete stereo audio codec with several inputs andoutputs, extensive audio routing, mixing and effects capabilities. A complete circuitdescription, schematic diagram and bill of materials are also included.
The following related documents are available through the Texas Instruments web siteat www.ti.com .
EVM-Compatible Device Data Sheets
Device Literature Number
TLV320AIC32 SLAS479TAS1020B SLES025REG1117-3.3 SBVS001TPS767D318 SLVS209SN74LVC125A SCAS290SN74LVC1G125 SCES223SN74LVC1G07 SCES296
Contents1 EVM Overview ............................................................................................................... 22 Analog Interface .............................................................................................................. 33 Digital Interface .............................................................................................................. 44 Power Supplies .............................................................................................................. 55 EVM Operation ............................................................................................................... 66 Kit Operation ................................................................................................................. 77 EVM Bill of Materials ....................................................................................................... 36Appendix A TLV320AIC32EVM Schematic .................................................................................. 40Appendix B USB-MODEVM Schematic ...................................................................................... 41
List of Figures
1 TLV320AIC32EVM-PDK Block Diagram ................................................................................. 82 Default Software Screen .................................................................................................. 103 Audio Generator Screen .................................................................................................. 124 Audio Analyzer Screen ................................................................................................... 135 Audio Input Tab ............................................................................................................ 146 Audio Interface Tab ....................................................................................................... 167 Clocks Tab ................................................................................................................. 17
I
2
S, I
2
C are trademarks of Koninklijke Philips Electronics N.V.Windows is a trademark of Microsoft Corporation.SPI is a trademark of Motorola, Inc.LabView is a trademark of National Instruments.All trademarks are the property of their respective owners.
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1 EVM Overview
1.1 Features
1.2 Introduction
EVM Overview
8 AGC Tab .................................................................................................................... 199 Filters Tab .................................................................................................................. 2010 ADC Highpass Filter Settings ............................................................................................ 2111 Enabling Filters ............................................................................................................ 2112 Shelf Filters ................................................................................................................. 2213 EQ Filters ................................................................................................................... 2214 Analog Simulation Filters ................................................................................................. 2315 Preset Filters ............................................................................................................... 2316 De-emphasis Filters ....................................................................................................... 2417 User Filters ................................................................................................................. 2518 3D Effect Settings ......................................................................................................... 2519 DAC/Line Outputs Tab .................................................................................................... 2620 Output Stage Configuration Tab ......................................................................................... 2821 High Power Outputs Tab ................................................................................................. 2922 Command Line Interface Tab ............................................................................................ 3023 File Menu ................................................................................................................... 31
List of Tables
1 Analog Interface Pinout ..................................................................................................... 32 Alternate Analog Connectors ............................................................................................... 43 Digital Interface Pinout ...................................................................................................... 44 Power Supply Pin Out ....................................................................................................... 55 List of Jumpers ............................................................................................................... 76 USB-MODEVM SW2 Settings ............................................................................................. 97 USB Control Endpoint HIDSETREPORT Request .................................................................... 318 Data Packet Configuration ................................................................................................ 329 GPIO Pin Assignments .................................................................................................... 3410 TLV320AIC32EVM Bill of Materials ...................................................................................... 3711 USB-MODEVM Bill of Materials .......................................................................................... 38
•Full-featured evaluation board for the TLV320AIC32 stereo audio codec.•Modular design for use with a variety of digital signal processor (DSP) and microcontroller interfaceboards.
The TLV320AIC32EVM-PDK is a complete evaluation kit, which includes a universal serial bus(USB)-based motherboard and evaluation software for use with a personal computer running MicrosoftWindows™ operating systems (Win2000 or XP).
The TLV320AIC32EVM is in Texas Instruments' modular EVM form factor, which allows direct evaluationof the device performance and operating characteristics, and eases software development and systemprototyping. This EVM is compatible with the 5-6K Interface Evaluation Module (SLAU104 ) and theHPA-MCUINTERFACE (SLAU106 ) from Texas Instruments and additional third-party boards that supportthe TI Modular EVM format.
The TLV320AIC32EVM-PDK is a complete evaluation/demonstration kit, which includes a USB-basedmotherboard called the USB-MODEVM Interface board and evaluation software for use with a personalcomputer running Microsoft Windows operating systems.
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2 Analog Interface
Analog Interface
For maximum flexibility, the TLV320AIC32EVM is designed for easy interfacing to multiple analog sources.Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin dualrow header/socket combination at J1 and J2. These headers/sockets provide access to the analog inputand output pins of the device. Consult Samtec at www.samtec.com or call 1-800-SAMTEC-9 for a varietyof mating connector options. Table 1 summarizes the analog interface pinout for the TLV320AIC32EVM.
Table 1. Analog Interface Pinout
PIN NUMBER SIGNAL DESCRIPTION
J1.1 HPLCOM High Power Output Driver (Left Minus or Multifunctional)J1.2 HPLOUT High Power Output Driver (Left Plus)J1.3 HPRCOM High Power Output Driver (Right Minus or Multifunctional)J1.4 HPROUT High Power Output Driver (Right Plus)J1.5 LINE1L Left Input 1J1.6 LINE1R Right Input 1J1.7 LINE2L Left Input 2J1.8 LINE2R Right Input 2J1.9 AGND Analog GroundJ1.10 MIC3L Left Input 3J1.11 AGND Analog GroundJ1.12 MIC3R Right Input 3J1.13 AGND Analog GroundJ1.14 MICBIAS Microphone Bias Voltage OutputJ1.15 NC Not ConnectedJ1.16 NC Not ConnectedJ1.17 AGND Analog GroundJ1.18 NC Not ConnectedJ1.19 AGND Analog GroundJ1.20 NC Not ConnectedJ2.1 NC Not ConnectedJ2.2 NC Not ConnectedJ2.3 NC Not ConnectedJ2.4 NC Not ConnectedJ2.5 NC Not ConnectedJ2.6 NC Not ConnectedJ2.7 LEFT_LOP Left Line Output (Plus)J2.8 LEFT_LOM Left Line Output (Minus)J2.9 AGND Analog GroundJ2.10 RIGHT_LOP Right Line Output (Plus)J2.11 AGND Analog GroundJ2.12 RIGHT_LOM Right Line Output (Minus)J2.13 AGND Analog GroundJ2.14 NC Not ConnectedJ2.15 NC Not ConnectedJ2.16 NC Not ConnectedJ2.17 AGND Analog GroundJ2.18 NC Not ConnectedJ2.19 AGND Analog GroundJ2.20 NC Not Connected
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3 Digital Interface
Digital Interface
In addition to the analog headers, the analog inputs and outputs may also be accessed through alternateconnectors, either screw terminals or audio jacks. The stereo microphone input is also tied to J8 and thestereo headphone output (the HP set of outputs) is available at J9.
Table 2 summarizes the screw terminals available on the TLV320AIC32EVM.
Table 2. Alternate Analog Connectors
DESIGNATOR PIN 1 PIN 2 PIN3
J6 AGND LINE1R LINE1LJ7 MIC3L MIC3R AGNDJ10 (+) LEFT_LOP (-) LEFT_LOMJ11 (+) RIGHT_LOP (-) RIGHT_LOMJ12 (+) HPLOUT (-) HPLCOM AGNDJ13 (+) HPROUT (-) HPRCOM AGNDJ14 AGND LINE2R LINE2L
The TLV320AIC32EVM is designed to easily interface with multiple control platforms. Samtec partnumbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin dual rowheader/socket combination at J4 and J5. These headers/sockets provide access to the digital control andserial data pins of the device. Consult Samtec at www.samtec.com or call 1-800- SAMTEC-9 for a varietyof mating connector options. Table 3 summarizes the digital interface pinout for the TLV320AIC32EVM.
Table 3. Digital Interface Pinout
PIN NUMBER SIGNAL DESCRIPTION
J4.1 NC Not ConnectedJ4.2 NC Not ConnectedJ4.3 NC Not ConnectedJ4.4 DGND Digital GroundJ4.5 NC Not ConnectedJ4.6 NC Not ConnectedJ4.7 NC Not ConnectedJ4.8 RESET INPUT Reset signal input to AIC32EVMJ4.9 NC Not ConnectedJ4.10 DGND Digital GroundJ4.11 NC Not ConnectedJ4.12 NC Not ConnectedJ4.13 NC Not ConnectedJ4.14 AIC32 /RESET ResetJ4.15 NC Not ConnectedJ4.16 SCL I
2
C Serial ClockJ4.17 NC Not ConnectedJ4.18 DGND Digital GroundJ4.19 NC Not ConnectedJ4.20 SDA I
2
C Serial Data Input/OutputJ5.1 NC Not ConnectedJ5.2 NC Not ConnectedJ5.3 BCLK Audio Serial Data Bus Bit Clock (Input/Output)J5.4 DGND Digital Ground
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4 Power Supplies
4.1 Stand-Alone Operation
Power Supplies
Table 3. Digital Interface Pinout (continued)
PIN NUMBER SIGNAL DESCRIPTION
J5.5 NC Not ConnectedJ5.6 NC Not ConnectedJ5.7 WCLK Audio Serial Data Bus Word Clock (Input/Output)J5.8 NC Not ConnectedJ5.9 NC Not ConnectedJ5.10 DGND Digital GroundJ5.11 DIN Audio Serial Data Bus Data Input (Input)J5.12 NC Not ConnectedJ5.13 DOUT Audio Serial Data Bus Data Output (Output)J5.14 NC Not ConnectedJ5.15 NC Not ConnectedJ5.16 SCL I
2
C Serial ClockJ5.17 MCLK Master Clock InputJ5.18 DGND Digital GroundJ5.19 NC Not ConnectedJ5.20 SDA I
2
C Serial Data Input/Output
Note that J5 comprises the signals needed for an I
2
S™ serial digital audio interface; the control interface( I
2
C™ and RESET) signals are routed to J4. I
2
C is actually routed to both connectors; however, the deviceis connected only to J4.
J3 provides connection to the common power bus for the TLV320AIC32EVM. Power is supplied on thepins listed in Table 4 .
Table 4. Power Supply Pin Out
SIGNAL PIN NUMBER SIGNAL
NC J3.1 J3.2 NC+5VA J3.3 J3.4 NCDGND J3.5 J3.6 AGNDDVDD (1.8V) J3.7 J3.8 NCIOVDD (3.3V) J3.9 J3.10 NC
The TLV320AIC32EVM-PDK motherboard (the USB-MODEVM Interface board) supplies power to J3 ofthe TLV320AIC32EVM. Power for the motherboard is supplied either through its USB connection or viaterminal blocks on that board.
When used as a stand-alone EVM, power can be applied to J3 directly. The user must be sure toreference the supplies to the appropriate grounds on that connector.
CAUTIONVerify that all power supplies are within the safe operating limits shown onthe TLV320AIC32 data sheet before applying power to the EVM.
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4.2 USB-MODEVM Interface Power
5 EVM Operation
5.1 Analog Input
5.2 Analog Output
5.3 Digital Control
EVM Operation
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 defaultfactory configuration). When powered from 6V-10VDC, either through the J8 terminal block or the J9barrel 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, JMP6should 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 fromthe +5VD supply; to enable this configuration, the switches on SW1 need to be set to enable theregulators by placing them in the ON position (lower position, looking at the board with text readingright-side up). If +1.8VD and +3.3VD are supplied externally, disable the onboard regulators by placingSW1 switches in the OFF position.
Each power supply voltage has an LED (D1-D7) that lights when the power supplies are active.
This section provides information on the analog input and output, digital control, and general operatingconditions for the TLV320AIC32EVM.
The analog input sources can be applied directly to J1 (top or bottom side) or through signal conditioningmodules available for the modular EVM system.
The analog inputs may also be accessed through J8 and and screw terminals J6, J7, and J14.
The analog outputs from the TLV320AIC32 are available on J1 and J2 (top or bottom). They also may beaccessed through J9, J10, J11, J12, and J13.
The digital control signals can be applied directly to J4 and J5 (top or bottom side). The modularTLV320AIC32EVM can also be connected directly to a DSP interface board, such as the5-6KINTERFACE or HPA-MCUINTERFACE, or to the USB-MODEVM Interface board if purchased as partof the TLV320AIC32EVM-PDK. See the product folder for this EVM or the TLV320AIC32 for a current listof compatible interface and/or accessory boards.
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5.4 Default Jumper Locations
6 Kit Operation
Kit Operation
Table 5 lists the jumpers found on the EVM and their respective factory default conditions.
Table 5. List of Jumpers
DEFAULTJUMPER POSITION JUMPER DESCRIPTION
JMP1 Installed Connects analog and digital groundsJMP2 Open Selects on-board EEPROM as firmware sourceJMP3 Installed Connects on-board Mic to Left Microphone InputJMP4 Installed Connects on-board Mic to Right Microphone InputJMP5 Installed Provides a means of measuring IOVDD currentJMP6 Installed Provides a means of measuring DVDD currentJMP7 Installed Provides a means of measuring DRVDD currentJMP8 Installed Provides a means of measuring AVDD_DAC currentJMP9 Open When installed, allows the USB-MODEVM to hardware reset the device under usercontrolJMP10 2-3 When connecting 2-3, mic bias comes from the MICBIAS pin on the device; whenconnecting 1-2, mic bias is supplied from the power supply through a resistor, whichthe user must install.JMP11 Installed When installed, shorts across the output capacitor on HPLOUT; remove this jumper ifusing AC-coupled output driveJMP12 Installed When installed, shorts HPLCOM and HPRCOM. Use only if these signals are set toconstant VCM.JMP13 Installed When installed, shorts across the output capacitor on HPLCOM; remove this jumper ifusing AC-coupled output driveJMP14 Installed When installed, shorts across the output capacitor on HPROUT; remove this jumper ifusing AC-coupled output driveJMP15 Installed When installed, shorts across the output capacitor on HPRCOM; remove this jumper ifusing AC-coupled output drive
This section provides information on using the TLV320AIC32EVM-PDK, including set up, programinstallation, and program usage.
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6.1 TLV320AIC32EVM-PDK Block Diagram
EVM Position 2
EVM Position 1
TLV320AIC32EVM
Control Interface
TLV320AIC32
TAS1020B
USB 8051
Microcontroller
USB
SPI, I C
2
I S, AC97
2
Audio Interface
Kit Operation
A block diagram of the TLV320AIC32EVM-PDK is shown in Figure 1 . The evaluation kit consists of twocircuit boards connected together. The motherboard is designated as the USB-MODEVM Interface board,while the daughtercard is the TLV320AIC32EVM described previously in this manual.
Figure 1. TLV320AIC32EVM-PDK Block Diagram
The USB-MODEVM Interface board is intended to be used in USB mode, where control of the installedEVM is accomplished using the onboard USB controller device. Provision is made, however, for driving allthe data buses (I
2
C, SPI™, I
2
S/AC97) externally. The source of these signals is controlled by SW2 on theUSB-MODEVM. Refer to Table 6 for details on the switch settings.
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6.2 Installation
Kit Operation
Table 6. USB-MODEVM SW2 Settings
SW-2 SWITCH
NUMBER LABEL SWITCH DESCRIPTION
1 A0 USB-MODEVM EEPROM I
2
C Address A0ON: A0 = 0OFF: A0 = 12 A1 USB-MODEVM EEPROM I
2
C Address A1ON: A1 = 0OFF: A1 = 13 A2 USB-MODEVM EEPROM I
2
C Address A2ON: A2 = 0OFF: A2 = 14 USB I
2
S I
2
S Bus Source SelectionON: I
2
S Bus connects to TAS1020OFF: I
2
S Bus connects to USB-MODEVM J145 USB MCK I
2
S Bus MCLK Source SelectionON: MCLK connects to TAS1020OFF: MCLK connects to USB-MODEVM J146 USB SPI SPI Bus Source SelectionON: SPI Bus connects to TAS1020OFF: SPI Bus connects to USB-MODEVM J157 USB RST RST Source SelectionON: EVM Reset Signal comes from TAS1020OFF: EVM Reset Signal comes from USB-MODEVM J158 EXT MCK External MCLK SelectionON: MCLK Signal is provided from USB-MODEVM J10OFF: MCLK Signal comes from either selection of SW2-5
For use with the TLV320AIC32EVM, SW-2 positions 1 through 7 should be set to ON, while SW-2.8should be set to OFF.
Ensure that the TLV320AIC32EVM is installed on the USB-MODEVM Interface board, aligning J1, J2, J3,J4, J5 with the corresponding connectors on the USB-MODEVM.
Place the CD-ROM into your PC CD-ROM drive. Locate the Setup program on the disk, and start it. TheSetup program will install the TLV320AIC32 Evaluation software on your PC.
After the main program is installed, the NI-VISA Runtime installer will automatically run. This softwareallows the program to communicate with the USB-MODEVM.
When the installation completes, click Finish on the TLV320AIC32EVM installer window. You may beprompted to restart your computer.
When installation is complete, attach a USB cable from your PC to the USB-MODEVM Interface board. Asconfigured at the factory, the board will be powered from the USB interface, so the power indicator LEDson the USB-MODEVM should light. Once this connection is established, launch the TLV320AIC32Evaluation software on your PC.
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6.3 USB-MODEVM Interface Board
Kit Operation
The software should automatically find the TLV320AIC32EVM, and a screen similar to the one in Figure 2
should appear.
Figure 2. Default Software Screen
The simple diagram shown in Figure 1 shows only the basic features of the USB-MODEVM Interface
board. The board is built around a TAS1020B streaming audio USB controller with an 8051-based core.
The board features two positions for modular EVMs, or one double-wide serial modular EVM may be
installed.
Since the TLV320AIC32EVM is a double-wide modular EVM, it is installed with connections to both EVM
positions, which connects the TLV320AIC32 digital control interface to the I2C port realized using the
TAS1020B, as well as the TAS1020B digital audio interface.
In the factory configuration, the board is ready to use with the TLV320AIC32EVM. To view all the functions
and configuration options available on the USB-MODEVM board, see the USB-MODEVM Interface Board
schematic in Appendix B.
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