Texas Instruments TLV320AIC12KEVMB-K User Manual
SLAU229B – October 2007 – Revised August 2008
TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's
This user's guide describes the characteristics, operation, and use of evaluation modules
TLV320AIC12KEVMB and TLV320AIC14KEVMB, both as stand-alone and as kits
(TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K). A complete circuit description, schematic diagram
and bill of materials are also included.
The following related documents are available through the Texas Instruments web site at www.ti.com .
EVM-Compatible Device Data Sheets
Device Literature Number
TLV320AIC12K/14K SLWS115E
TAS1020B SLES025
REG1117-3.3 SBVS001
TPS767D318 SLVS209
SN74LVC125A SCAS290
SN74LVC1G125 SCES223
SN74LVC1G07 SCES296
User's Guide
Guide
Contents
1 EVM Overview ............................................................................................................... 3
2 Analog Interface .............................................................................................................. 3
3 Digital Interface .............................................................................................................. 4
4 Power Supplies .............................................................................................................. 6
5 EVM Operation ............................................................................................................... 6
6 Kit Operation ................................................................................................................. 7
7 EVM Bill of Materials ....................................................................................................... 29
Appendix A TLV320AIC12KEVMB/14KEVMB Schematic ................................................................. 32
Appendix B USB-MODEVM Schematic ...................................................................................... 33
List of Figures
1 TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram .................................................................. 8
2 Default Software Screen .................................................................................................. 10
3 Information Tab ............................................................................................................. 12
4 Sounds and Audio Devices Properties .................................................................................. 13
5 Preset Configurations ...................................................................................................... 14
6 Device Controls Tab ....................................................................................................... 15
7 Control Register 1 Tab .................................................................................................... 16
8 Control Register 2 Tab .................................................................................................... 17
9 Control Register 3 Tab .................................................................................................... 17
10 Control Register 4 Tab .................................................................................................... 18
11 Control Register 5 Tab .................................................................................................... 18
12 Control Register 6 Tab .................................................................................................... 19
SMARTDM is a trademark of Texas Instruments.
I2C is a trademark of Koninklijke Philips Electronics N.V.
Windows is a registered trademark of Microsoft Corporation.
LabView is a trademark of National Instruments.
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13 Command Line Interface Tab ............................................................................................ 20
14 File Menu .................................................................................................................... 21
15 Options Menu ............................................................................................................... 21
16 Help .......................................................................................................................... 22
List of Tables
1 Analog Interface Pinout ..................................................................................................... 3
2 Alternate Analog Connectors ............................................................................................... 4
3 Digital Interface Pinout ...................................................................................................... 4
4 Power Supply Pinout ........................................................................................................ 6
5 List of Jumpers ............................................................................................................... 7
6 USB-MODEVM SW2 Settings ............................................................................................. 9
7 USB Control Endpoint HIDSETREPORT Request .................................................................... 22
8 Data Packet Configuration ................................................................................................ 23
9 GPIO Pin Assignments .................................................................................................... 25
10 TLV320AIC12KEVMB/14KEVMB Bill of Materials ..................................................................... 29
11 USB-MODEVM Bill of Materials .......................................................................................... 30
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1 EVM Overview
1.1 Features
1.2 Introduction
2 Analog Interface
EVM Overview
• Full-featured evaluation board for the TLV320AIC12K/14K audio codec
• TLV320AIC12KEVMB-K/14KEVMB-K features USB connectivity for quick and easy setup.
• Intuitive evaluation software
• Easy interfacing to multiple analog sources
• Analog output signals from the TLV320AIC12K/14K are available on top and bottom connectors.
• On-board headphone jack, external microphone jack and electret microphone are included
• Digital control signals can be applied directly to top and bottom connectors.
The TLV320AIC12KEVMB-K/14KEVMB-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 Microsoft Windows
®
operating systems. Provisions are made for connecting all
audio inputs and outputs either from the modular connectors or with on-board terminals, a headphone
jack, and external microphone jack. An on-board electret microphone is also provided.
For maximum flexibility, the TLV320AIC12KEVMB/14KEVMB 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 dual row header/socket combination at J1 and J2. These headers/sockets provide
access to the analog input and output pins of the device. Consult Samtec at www.samtec.com or call
1-800-SAMTEC-9 for a variety of mating connector options. Table 1 summarizes the analog interface
pinout for the TLV320AIC12KEVMB/14KEVMB.
Table 1. Analog Interface Pinout
PIN NUMBER SIGNAL DESCRIPTION
J1.1 OUTM1 Inverting output of the DAC
J1.2 OUTP1 Noninverting output of the DAC
J1.3 OUTMV Programmable virtual ground for the output of OUTP2 and OUTP3
J1.4 OUTP2 Analog output number 2 from the 16- Ω driver
J1.5 OUTMV Programmable virtual ground for the output of OUTP2 and OUTP3
J1.6 OUTMV Programmable virtual ground for the output of OUTP2 and OUTP3
J1.7 OUTMV Programmable virtual ground for the output of OUTP2 and OUTP3
J1.8 OUTP2 Analog output number 3 from the 16- Ω driver
J1.9 AGND Analog Ground
J1.10 NC Not Connected
J1.11 AGND Analog Ground
J1.12 NC Not Connected
J1.13 AGND Analog Ground
J1.14 NC Not Connected
J1.15 NC Not Connected
J1.16 NC Not Connected
J1.17 AGND Analog Ground
J1.18 NC Not Connected
J1.19 AGND Analog Ground
J1.20 NC Not Connected
J2.1 INM2 Inverting analog input 2
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Digital Interface
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Table 1. Analog Interface Pinout (continued)
PIN NUMBER SIGNAL DESCRIPTION
J2.2 INP2 Noninverting analog input 2
J2.3 NC Not Connected
J2.4 NC Not Connected
J2.5 NC Not Connected
J2.6 NC Not Connected
J2.7 INM1 Inverting analog input 1
J2.8 INP1 Noninverting analog input 1
J2.9 AGND Analog Ground
J2.10 NC Not Connected
J2.11 AGND Analog Ground
J2.12 NC Not Connected
J2.13 AGND Analog Ground
J2.14 NC Not Connected
J2.15 NC Not Connected
J2.16 NC Not Connected
J2.17 AGND Analog Ground
J2.18 NC Not Connected
J2.19 AGND Analog Ground
J2.20 NC Not Connected
3 Digital Interface
In addition to the analog headers, the analog inputs and outputs may also be accessed through alternate
connectors, either screw terminals or audio jacks. The microphone input is also tied to J8 and the headset
output tied to J11. Table 2 summarizes the screw terminals available on the
TLV320AIC12KEVMB/14KEVMB.
Table 2. Alternate Analog Connectors
DESIGNATOR PIN 1 PIN 2 PIN3
J6 OUTP1 OUTM1
J7 OUTP2 OUTMV OUTP3
J9 INP2 INM2
J10 INM1 INP1
The TLV320AIC12KEVMB/14KEVMB is designed to easily interface with multiple control platforms.
Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin dual
row header/socket combination at J4 and J5. These headers/sockets provide access to the digital control
and serial data pins of the device. Consult Samtec at www.samtec.com or call 1-800- SAMTEC-9 for a
variety of mating connector options. Table 3 summarizes the digital interface pinout for the
TLV320AIC12KEVMB/14KEVMB.
Table 3. Digital Interface Pinout
PIN NUMBER SIGNAL DESCRIPTION
J4.1 NC Not Connected
J4.2 NC Not Connected
J4.3 NC Not Connected
J4.4 DGND Digital Ground
J4.5 NC Not Connected
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Digital Interface
Table 3. Digital Interface Pinout (continued)
PIN NUMBER SIGNAL DESCRIPTION
J4.6 NC Not Connected
J4.7 NC Not Connected
J4.8 AIC12K/14K RESET Reset signal input to AIC12K/14KEVMB
J4.9 NC Not Connected
J4.10 DGND Digital Ground
J4.11 NC Not Connected
J4.12 NC Not Connected
J4.13 NC Not Connected
J4.14 AIC12K/14K RESET Reset signal input to AIC12K/14KEVMB
J4.15 NC Not Connected
J4.16 SCL I2C Serial Clock
J4.17 NC Not Connected
J4.18 DGND Digital Ground
J4.19 NC Not Connected
J4.20 SDA I2C Serial Data Input/Output
J5.1 NC Not Connected
J5.2 NC Not Connected
J5.3 SCLK Audio Serial Data Shift Clock (Input/Output)
J5.4 DGND Digital Ground
J5.5 NC Not Connected
J5.6 NC Not Connected
J5A.7 FSD Audio Serial Data Bus Frame Sync Delayed
J5B.7 FS Audio Serial Data Bus Frame Sync (Input/Output)
J5.8 NC Not Connected
J5.9 NC Not Connected
J5.10 DGND Digital Ground
J5.11 DIN Audio Serial Data Bus Data Input (Input)
J5.12 NC Not Connected
J5.13 DOUT Audio Serial Data Bus Data Output (Output)
J5.14 NC Not Connected
J5.15 NC Not Connected
J5.16 SCL I2C Serial Clock
J5.17 MCLK Master Clock Input
J5.18 DGND Digital Ground
J5.19 AIC12K/14K PWDN Power down signal input to AIC12K/14KEVMB
J5.20 SDA I2C Serial Data Input/Output
Note that J5 comprises the signals needed for a SMARTDM™ serial digital audio interface and I2C™
signals. The reset and power down ( RESET and PWRDN) signals are routed to J4. I2C™ is actually
routed from the USB-MODEVM to both connectors; however, the codec and EEPROM are only connected
to J5.
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Power Supplies
4 Power Supplies
J3 provides connection to the common power bus for the TLV320AIC12KEVMB/14KEVMB. Power is
supplied on the pins listed in Table 4 .
The TLV320AIC12KEVMB-K/14KEVMB-K motherboard (the USB-MODEVM Interface board) supplies
power to J3 of the TLV320AIC12KEVMB/14KEVMB. Power for the motherboard is supplied either through
its USB connection or via terminal blocks on that board.
4.1 Stand-Alone Operation
When used as a stand-alone EVM, power can be applied to J3 directly. The user must be sure to
reference the supplies to the appropriate grounds on that connector.
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Table 4. Power Supply Pinout
SIGNAL PIN NUMBER SIGNAL
NC J3.1 J3.2 NC
+5VA J3.3 J3.4 NC
DGND J3.5 J3.6 AGND
DVDD (1.8V) J3.7 J3.8 NC
IOVDD (3.3V) J3.9 J3.10 NC
CAUTION
Verify that all power supplies are within the safe operating limits shown on the
TLV320AIC12K/14K data sheet before applying power to the EVM.
4.2 USB-MODEVM Interface Power
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 the 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.
5 EVM Operation
This section provides information on the analog input and output, digital control, and general operating
conditions for the TLV320AIC12KEVMB/14KEVMB.
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5.1 Analog Input
The analog input sources can be applied directly to J2 (top or bottom side). The analog inputs may also
be accessed through J8 and screw terminals J9 and J10.
5.2 Analog Output
The analog outputs from the TLV320AIC12K/14K are available on J1 (top or bottom). They also may be
accessed through J6 and J7 or J11. Note that the TLV320AIC14K only has one (differential) output which
can be accessed from J1 or screw terminal J6.
5.3 Digital Control
The digital control signals can be applied directly to J4 and J5 (top or bottom side). The modular
TLV320AIC12KEVMB/14KEVMB can also be connected directly to the USB-MODEVM Interface board
included as part of the TLV320AIC12EVMB-K/14EVMB-K. See the product folder for this EVM or the
TLV320AIC12K/14K for a current list of compatible interface and/or accessory boards.
5.4 Default Jumper Locations
Table 5 lists the jumpers found on the EVM and their respective factory default conditions. Please note
that jumper W5 must be set to position 1-2 (IOVDD=3.3V) when using the USB-MODEVM for I2C
communication.
JUMPER POSITION JUMPER DESCRIPTION
W1 1-2 digital audio clock signals. When set as slave (1-2), the codec receives the digital
W2 1-2
W3 Installed Provides a means of measuring IOVDD current
W4 Installed Provides a means of measuring DVDD current
W5 1-2
W6 Installed Selects on-board EEPROM as firmware source (required)
W7 Installed
W8 Installed Provides a means of measuring AVDD current
W9 Installed Provides a means of measuring DRVDD current
W10 Installed Coupling for OUTP1. Either directly or via capacitor
W11 1-2 Source for INM1. Set to 1-2 when using external common mode for MICIN
W12 Installed Disconnects electret microphone (MK1)
Kit Operation
Table 5. List of Jumpers
DEFAULT
Sets the codec as master or slave. When set as master (2-3), the codec provides the
audio clock signals.
Used for correct polarity for FSD. In stand-alone master, FSD must be pulled high
(2-3), In stand alone slave, FSD must be pulled low (1-2).
IOVDD select. Can be set to 3.3V (1-2) or 1.8V (2-3) although 3.3V is required when
using the USB-MODEVM for I2C communication.
When installed, allows the USB-MODEVM to hardware reset the device under user
control
6 Kit Operation
This section provides information on using the TLV320AIC12KEVMB-K/14KEVMB-K, including set up,
program installation, and program usage.
6.1 TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram
A block diagram of the TLV320AIC12KEVMB-K/14KEVMB-K is shown in Figure 1 . The evaluation kit
consists of two circuit boards connected together. The motherboard is designated as the USB-MODEVM
Interface board, while the daughtercard is the TLV320AIC12KEVMB/14KEVMB described previously in
this manual.
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EVMPosition2
EVMPosition1
TLV320AIC12KEVMB/14KEVMB
ControlInterface
TAS1020B
USB8051
Microcontroller
USB
I C
2
SMARTDM
AudioInterface
TLV320AIC12K/14K
Kit Operation
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Figure 1. TLV320AIC12KEVMB-K/14KEVMB-K Block Diagram
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, PCM/ SMARTDM™) externally. The source of these signals is controlled by SW2 on
the USB-MODEVM. Refer to Table 6 for details on the switch settings.
Additionally, SW3 on the USB-MODEVM (IOVDD SELECT) must be set up to 3.3V (SW3 position 1 on,
SW3 positions 2-8 off).
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Kit Operation
Table 6. USB-MODEVM SW2 Settings
SW-2 SWITCH
NUMBER LABEL SWITCH DESCRIPTION
1 A0 ON: A0 = 0
2 A1 ON: A1 = 0
3 A2 ON: A2 = 0
4 USB I2S ON: Digital Audio Bus connects to TAS1020
5 USB MCK ON: MCLK connects to TAS1020
6 USB SPI ON: SPI Bus connects to TAS1020
7 USB RST ON: EVM Reset Signal comes from TAS1020
8 EXT MCK ON: MCLK Signal is provided from USB-MODEVM J10
USB-MODEVM EEPROM I2C Address A0
OFF: A0 = 1
USB-MODEVM EEPROM I2C Address A1
OFF: A1 = 1
USB-MODEVM EEPROM I2C Address A2
OFF: A2 = 1
Digital Audio Bus Source Selection
OFF: Digital Audio Bus connects to USB-MODEVM J14
Digital Audio Bus MCLK Source Selection
OFF: MCLK connects to USB-MODEVM J14
SPI Bus Source Selection
OFF: SPI Bus connects to USB-MODEVM J15
RST Source Selection
OFF: EVM Reset Signal comes from USB-MODEVM J15
External MCLK Selection
OFF: MCLK Signal comes from either selection of SW2-5
For use with the TLV320AIC12KEVMB/14KEVMB, SW-2 positions 1, 3, 4, 5 and 6 should be set to ON,
while SW-2 positions 2, 7 and 8 should be set to OFF.
6.2 Installation
Ensure that the TLV320AIC12KEVMB/14KEVMB 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. The
Setup program will install the TLV320AIC12K/14K Evaluation Tool software on your PC.
The NI-VISA Runtime installer is embedded to the TLV320AIC12K/14K Evaluation Tool installer. This
software allows the program to communicate with the USB-MODEVM.
When the installation completes, click Finish on the TLV320AIC12K/14K Evaluation Tool installer window.
You may be prompted to restart your computer.
When installation is complete, attach a USB cable from your PC to the USB-MODEVM Interface board. As
configured at the factory, the board will be powered from the USB interface, so the power indicator LEDs
and the 'USB ACTIVE' LED on the USB-MODEVM should light.
The Found New Hardware Wizard will show up on the screen. Select the ' No, not this time' radio button
and click ' Next >'. Select ' Install the software automatically (Recommended)' and click ' Next >'. If the
driver installs correctly the message: ' The wizard has finished installing the software for: AIC12K/14K
EVM' should appear. Click ' Finish'. The AIC12K/14K EVM driver should now be installed. The device
should now appear on the Device Manager as ' NI-VISA USB Devices>AIC12K/14K EVM' and as ' Sound,
video and game controllers>USB Audio Device'.
Once the device drivers are installed launch the TLV320AIC12K/14K Evaluation Tool software on your
PC, located on the computer's desktop or in 'Start>Programs>Texas Instruments'.
The software should automatically find the TLV320AIC12K/14K, and a screen similar to the one in
Figure 2 should appear.
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6.3 USB-MODEVM Interface Board
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 TLV320AIC12KEVMB/14KEVMB is a double-wide modular EVM, it is installed with connections
to both EVM positions, which connects the TLV320AIC12K/14K 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 TLV320AIC12KEVMB/14KEVMB. To view
all the functions and configuration options available on the USB-MODEVM board, see the USB-MODEVM
Interface Board schematic in Appendix B .
6.4 Program Description
After the TLV320AIC12KEVMBK/14KEVMB-K software installation (described in Section 6.2 ) is complete,
evaluation and development with the TLV320AIC12K/14K can begin.
TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's Guide10 SLAU229B – October 2007 – Revised August 2008
Figure 2. Default Software Screen
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6.5 Indicators and Main Screen Controls
Figure 2 illustrates the indicators and the main screen controls near the top of the software screen display,
and a large tabbed interface below. This section discusses the controls above this tabbed section.
At the top left of the screen is an Interface indicator. The TLV320AIC12K/14K has an I2C interface. The
indicator is lit after the program begins. Below the Interface indicator is the Device Connected indicator.
The TLV320AIC12K/14K Evaluation Tool detects whether or not the TLV320AIC12KEVMB-K/14KEVMB-K
is present. If the device is unplugged from the USB port or if the device driver is not installed properly, the
Device Connected indicator will turn red. Otherwise, it will turn green.
To the right of the Interface indicator is a group box called Firmware. This box indicates the product
identification of the USB device, so AIC12K/14K EVM should be displayed in the box labeled Located
On:. The version of the firmware appears in the Version box below this.
To the right, the next group box contains controls for resetting the TLV320AIC12K/14K. A software reset
can be done by writing to a register in the TLV320AIC12K/14K; the writing is accomplished by pushing the
button labeled Software Reset. This button also resets to the default I2C address and refreshes the GUI's
register table and controls/indicators by reading all registers. The TLV320AIC12K/14K also may be reset
by toggling a GPIO pin on the USB-MODEVM, which is done by pushing the Hardware Reset button.
In order to perform a hardware reset, the RESET jumper (W7) must be installed
and SW2-7 on the USB-MODEVM must be turned OFF. Failure to do either of
these steps results in not generating a hardware reset or causing unstable
operation of the EVM, which may require cycling power to the USB-MODEVM.
Kit Operation
CAUTION
The ADC Overflow and DAC Overflow indicators light when the overflow flags are set in register 1 of the
TLV320AIC12K/14K. These indicators, as well as the other indicators on this panel, update only when
writing or reading registers, on resets or by pushing the Refresh button. The Indicator Updates and
Control Updates buttons enable/disable updates of indicators and controls, respectively.
6.6 Information Tab
The information tab (Figure 3 ) shows information for two TLV320AIC12KEVMB-K/14KEVMB-K hardware
configurations.
The USB-MODEVM Audio Interface Configuration allows audio data and I2C communication between
the host computer and the TLV320AIC12K/14K. SW2 on the USB-MODEVM must be configured as
shown in the left section of Figure 3 .
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Kit Operation
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Figure 3. Information Tab
Additionally, the operating system's audio device must be configured as AIC12K/14K EVM (see Figure 4 ).
The External Audio Interface Configuration only allows I2C communication between the host computer
and the TLV320AIC12K/14K. In this configuration, the TLV320AIC12K/14K can transmit and receive audio
data to/from an external PCM device or DSP. SW2 on the USB-MODEVM must be configured as shown in
the right section of Figure 3 .
12 TLV320AIC12KEVMB-K and TLV320AIC14KEVMB-K User's Guide SLAU229B – October 2007 – Revised August 2008
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