Evaluation Board User Guide
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UG-284
ADAU1373 Evaluation Board User Guide
PACKAGE CONTENTS
ADAU1373 evaluation board
5 V ac-to-dc power adapter
Evaluation board user guide
DOCUMENTS NEEDED
ADAU1373 data sheet
AN-1006 Application Note, Using the EVAL-ADUSB2EBZ
GENERAL DESCRIPTION
The ADAU1373 is a low power audio codec that supports stereo
record and playback. It provides eight single-ended or four
differential analog inputs with PGA for adjusting the gain. The
support for two stereo digital microphone inputs is provided so
that, in total, four digital microphones can be connected. In
addition, three serial digital audio in/out ports are provided
with ASRCs to support various sampling rates at the
input/output ports, allowing flexible system design.
The analog output side consists of line outputs, a headphone
output, a speaker output, and a receiver output. The two stereo
single-ended line level outputs are included, which can be
configured as two differential outputs. The headphone output is
stereo true-ground-centered with efficient Class-G architecture.
The efficient stereo filterless Class-D switching amplifier provides around 1 W stereo power for speakers. The differential
receiver amplifier can be used to connect the separate receiver
speaker.
The ADAU1373 evaluation board includes the complete
application circuit for the ADAU1373. The board is featured
with USBi connection to the SigmaStudio™ graphical development tool running on a host PC, which is used to program the
ADAU1373.
Included in this user guide is a detailed description for the
ADAU1373 evaluation board. It is recommended that the
ADAU1373 data sheet be read along with this user guide. Full
details about the part are available in the ADAU1373 data sheet,
which provides more detailed information about the specifications, internal block diagrams, and application guidance for the
codec IC.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 24
UG-284 Evaluation Board User Guide
TABLE OF CONTENTS
Package Contents .............................................................................. 1
Documents Needed .......................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Setting Up the Board—Quick Start ................................................ 3
SigmaStudio Software Installation ............................................. 3
Hardware Setup, USBi .................................................................. 3
Powering the Board ...................................................................... 3
Setting Up the Registers in SigmaStudio ................................... 3
REVISION HISTORY
6/11—Revision 0: Initial Version
Evaluation Board Hardware .............................................................5
Power Supplies ...............................................................................5
Digital Audio Interface and Digital Microphone Interface .....7
Analog Input and Output .............................................................9
Clock and Control Port ............................................................. 10
Evaluation Board Schematics and Artwork ................................ 11
Ordering Information .................................................................... 20
Bill of Materials ........................................................................... 20
Related Links ................................................................................... 21
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Evaluation Board User Guide UG-284
SETTING UP THE BOARD—QUICK START
SigmaStudio SOFTWARE INSTALLATION
To install the SigmaStudio software, follow these steps:
1. Open the provided .zip file and extract the files to your PC.
Alternatively, insert the SigmaStudio CD into the PC
optical drive and locate the SigmaStudio folder on the CD.
2. If Microsoft .NET Framework Version 3.5 is not already
installed on the PC, install it by double-clicking
dotnetfx.exe.
3. Install SigmaStudio by double-clicking setup.exe and
following the prompts. A computer restart is not required.
HARDWARE SETUP, USBi
To set up the USBi hardware, follow these steps:
1. Plug the USBi ribbon cable into Header J23.
2. Connect the USB cable to your computer and to the USBi.
3. When prompted for drivers, follow these steps:
a) Select Install from a list or a specific location.
b) Select Search for the best driver in these locations.
c) Select the box for Include this location in the search.
The USBi driver is located in C:\Program Files\Analog
Devices Inc\Sigma Studio\USB drivers.
d) Click Next.
e) If prompted to choose a driver, select CyUSB.sys.
f) If the PC is running Windows® XP and you receive the
message that the software has not passed Windows
logo testing, click Continue Anyway.
POWERING THE BOARD
1. Plug the external dc power adapter into J34 to input 5 V dc
power to the board.
2. Short Jumpers J40, J33, J31, and J32 to select the on-board
LDO-generated voltages that are connected to SPKVDD,
HPVDD, AVDD, and DVDD, respectively.
3. Set Jumpers J43, J36, J39, J37, and J38 to select the required
voltage (1.8 V, 2.4 V, or 3.3 V) connected to each IOVDDx
(x = 1 to 5).
SETTING UP THE REGISTERS IN SigmaStudio
The codec is configured with SigmaStudio software. To set up
the registers in SigmaStudio, follow these steps:
1. Create a new project. Select New Project under the File
menu. The Hardware Configuration tab opens.
2. Click and drag an ADAU1373 cell and a USBi cell into the
blank work area.
3. Connect the USBi cell to the ADAU1373 cell by clicking
and dragging from the top blue output pin of the USBi cell
to the green input pin of the ADAU1373 cell. The window
should now resemble Figure 1.
4. In the IC 1 - ADAU1373_REVB_V1.13 tab, configure the
ADAU1373 registers by clicking the intuitive graphic user
interface (GUI) elements in the Input A to Input D,
Analog Input Signal Routing, and Mic Bias Control
sections to set up the proper datapath (see Figure 2).
The SigmaStudio software includes help information. Press the
F1 key to open the help window.
Figure 1. Hardware Configuration Tab—USBi Connection
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09899-001
UG-284 Evaluation Board User Guide
09899-002
Figure 2. Hardware Configuration Tab—Register Setup
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Evaluation Board User Guide UG-284
EVALUATION BOARD HARDWARE
POWER SUPPLIES
IOVDD5
FOR
2
I
C/SPI
IOVDD2
FOR
DAI B
IOVDD1
FOR
DAI A
IOVDD4
FOR
DMIC
IOVDD3
FOR
DAI C
SPKVDD
DVDD
5V DC INPUT
Figure 3. Power Supply
The evaluation board requires an external 5 V dc power adapter
plugged into J34. This 5 V dc input drives the on-board LDOs
to generate 1.5 V, 1.8 V, 2.4 V, 3.3 V, or 3.6 V, which feeds into
the ADAU1373 and other on-board circuits. The power
supplies the ADAU1373 requires are listed in Tab le 1.
Table 1. ADAU1373 Power Supplies
Power Supply LDO Voltage
AVDD 1.8 V
HPVDD 1.8 V
SPKVDD 3.6 V
DVDD 1.5 V
IOVDD1 to IOVDD5 1.8 V, 2.4 V, or 3.3 V
If voltages other than the default LDO output are needed, external
power supplies can be used for this purpose. Each power supply
for the ADAU1373 has a set of jumpers to select the LDO
output or external power supply.
J31 is for AVDD power supply selection. The selection options
are shown in Ta ble 2 .
Table 2. J31
Jumper
Position
Func tion
On On-board LDO-generated 1.8 V connected to AVDD
Off
External power supply connected to Test Pin AVDD
and Test Pin GND
J33 is for HPVDD power supply selection. The selection table is
shown in Table 3.
Rev. 0 | Page 5 of 24
HPVDD AVDD
09899-003
Table 3. J33
Jumper
Position
On
Off
Function
On-board LDO-generated 1.8 V connected to
HPVDD
External power supply connected to Test Pin HPVDD
and Test Pin GND
J32 is for DVDD power supply selection. The selection options
are shown in Ta ble 4 .
Table 4. J32
Jumper
Position
Function
On On-board LDO-generated 1.5 V connected to DVDD
Off
External power supply connected to Test Pin DVDD
and Test Pin GND
J40 is for SPKVDD power supply selection. The selection
options are shown in Tab l e 5.
Table 5. J40
Jumper
Position
On
Off
Function
On-board LDO-generated 3.6 V connected to
SPKVDD
External power supply connected to SPKVDD: J41
for SPKVDD and J42 for GND
J43 is for IOVDD1 power supply selection, which powers
Digital Audio Interface A. The selection options are shown in
Tabl e 6.
UG-284 Evaluation Board User Guide
Table 6. J43
Jumper
Position
1-2
3-4
5-6
Off
1
Jumper Position x-y means Pin x and Pin y are connected together via a
1
Func tion
On-board LDO-generated 1.8 V connected to
IOVDD1
On-board LDO-generated 3.3 V connected to
IOVDD1
On-board LDO-generated 2.4 V connected to
IOVDD1
External power supply connected to
Test Pin IOVDD1 and Test Pin GND
jumper capacitor.
J36 is for IOVDD2 power supply selection, which powers digital
Audio Interface B. The selection options are shown in Ta ble 7 .
Table 7. J36
Jumper
Position
1-2
3-4
5-6
Off
1
Jumper Position x-y means Pin x and Pin y are connected together via a
1
Function
On-board LDO-generated 1.8 V connected to
IOVDD2
On-board LDO-generated 3.3 V connected to
IOVDD2
On-board LDO-generated 2.4 V connected to
IOVDD2
External power supply connected to
Test Pin IOVDD2 and Test Pin GND
jumper capacitor.
J39 is for IOVDD3 power supply selection, which powers digital
Audio Interface C. The selection options are shown in Tab le 8.
Table 8. J39
Jumper
Position
1-2
3-4
5-6
Off
1
Jumper Position x-y means Pin x and Pin y are connected together via a
1
Function
On-board LDO-generated 1.8 V connected to
IOVDD3
On-board LDO-generated 3.3 V connected to
IOVDD3
On-board LDO-generated 2.4 V connected to
IOVDD3
External power supply connected to
Test Pin IOVDD3 and Test Pin GND
jumper capacitor.
J37 is for IOVDD4 power supply selection, which powers the
digital microphone interface. The selection options are shown
in Tabl e 9 .
Table 9. J37
Jumper
Position
1-2
3-4
5-6
Off
1
Jumper Position x-y means Pin x and Pin y are connected together via a
1
Function
On-board LDO-generated 1.8 V connected to
IOVDD4
On-board LDO-generated 3.3 V connected to
IOVDD4
On-board LDO-generated 2.4 V connected to
IOVDD4
External power supply connected to
Test Pin IOVDD4 and Test Pin GND
jumper capacitor.
J38 is for IOVDD5 power supply selection, which powers the
2
I
C/SPI port. The selection options are shown in Tab le 1 0.
Table 10. J38
Jumper
Position
1-2
3-4
5-6
Off
1
Jumper Position x-y means Pin x and Pin y are connected together via a
1
Func tion
On-board LDO-generated 1.8 V connected to
IOVDD5
On-board LDO-generated 3.3 V connected to
IOVDD5
On-board LDO-generated 2.4 V connected to
IOVDD5
External power supply connected to
Test Pin IOVDD5 and Test Pin GND
jumper capacitor.
Rev. 0 | Page 6 of 24
Evaluation Board User Guide UG-284
DIGITAL AUDIO INTERFACE AND DIGITAL MICROPHONE INTERFACE
DIGITAL AUDIO
INTERFACE A
DIGITAL MIC
INTERFACE 1
DIGITAL MIC
INTERFACE 2
Figure 4. Digital Audio Interface and Digital Microphone Interface
The evaluation board provides three digital audio interfaces
(J28 to J30) and two digital microphone interfaces (J44/J45
and J46/J47).
The pin definitions for J28, J29, and J30 are shown in Figure 5,
Figure 6, and Figure 7, respectively.
12
GND
1
GND
3
GND
5
GND
7
GND
9
GND
11
Figure 5. Pin Definitions for J28
12
GND
1
GND
3
GND
5
GND
7
GND
9
GND
11
Figure 6. Pin Definitions for J29
2
4
6
8
10
12
2
4
6
8
10
12
MCLK1
GPIO1
A_BCLK
A_LRC
A_DACDAT
A_ADCDAT
MCLK2
GPIO2
B_BCLK
B_LRC
B_DACDAT
B_ADCDAT
09899-016
09899-017
DIGITAL AUDIO
INTERFACE B
DIGITAL AUDIO
INTERFACE C
09899-004
12
1
GND
3
GND
5
GND
7
GND
9
GND
11
GND
NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
2
NC
4
GPIO3
6
C_BCLK
8
C_LRC
10
C_DACDAT
12
C_ADCDAT
09899-018
Figure 7. Pin Definitions for J30
The pin definitions for J44 are listed in Tabl e 11.
Table 11. J44
Pin No. Signal
1 IOVDD4
2 DMIC_DATA1
3 LR_SEL (high)
4 NC
5 DMIC_CLK
6 GND
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UG-284 Evaluation Board User Guide
The pin definitions for J45 are listed in Tabl e 12.
The pin definitions for J47 are listed in Tabl e 14.
Table 12. J45
Pin No. Signal
1 IOVDD4
2 DMIC_DATA1
3 LR_SEL (low)
4 NC
5 DMIC_CLK
6 GND
The pin definitions for J46 are listed in Tabl e 13.
Table 13. J46
Pin No. Signal
1 IOVDD4
2 DMIC_DATA1
3 LR_SEL (high)
4 NC
5 DMIC_CLK
6 GND
Table 14. J47
Pin No. Signal
1 IOVDD4
2 DMIC_DATA1
3 LR_SEL (low)
4 NC
5 DMIC_CLK
6 GND
Rev. 0 | Page 8 of 24