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Evaluation Board User Guide
UG-072
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
ADAU1401A, ADAU1401, ADAU1701, and ADAU1702 SigmaDSP Evaluation Board
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. A | Page 1 of 20
GENERAL DESCRIPTION
The EVA L-ADAU1401AEBZ is a platform that operates all of
the ADAU1401A’s functions with a full range of analog and
digital inputs and outputs. Digital I/O connections are available
in both S/PDIF and 3-wire serial data formats. The DSP is
controlled by the SigmaStudio™ software, which interfaces to
the board through a USB connection. This evaluation board is
powered by a single supply, which is regulated to the proper
voltages on the board. The PCB is in a 6” × 6” 4-layer design,
with a single ground plane and a single power plane on the
inner layers.
The ADAU1401A can be controlled via the USBi interface
control board connected to the I
2
C/SPI communications
interface. On-board self-boot EEPROM is included for
operating the board independently of the SigmaStudio software.
Push-buttons, LEDs, potentiometers, and other interface
options on the included GPIO board can be connected to the
evaluation board to enable GPIO control.
The EVA L-ADAU1401AEBZ can also be used for evaluation of
the pin-compatible ADAU1701 and ADAU1702 SigmaDSP®s.
The differences between the ADAU1401A, ADAU1401,
ADAU1701, and ADAU1702 are:
• The ADAU1701, ADAU1401A, and ADAU1401 have 1024
program RAM locations, while the ADAU1702 has 512
program RAM locations.
• The ADAU1701 has 2k words of data memory, while the
ADAU1702 has 0.5k words of data memory.
• The ADAU1401A is qualified over the automotive
temperature range (−40°C to +105°C), while the
ADAU1701 and ADAU1702 are qualified over the
consumer temperature range (0°C to 70°C).
• The ADAU1401 is an older revision of the ADAU1401A.
The ADAU1401A is recommended for new designs.
PACKAGE CONTENTS
EVAL-ADAU1401AEBZ evaluation board
GPIO control board
USBi board
Universal power supply
Mini-USB cable
Evaluation board/software quick-start guide, including a
download link for the SigmaStudio tools
OTHER SUPPORTING DOCUMENTATION
When using this evaluation board, refer also to the following
documentation available at www.analog.com:
• ADAU1401A, ADAU1401, ADAU1701, ADAU1702 data
sheets
• AN-923 Application Note, Designing a System Using the
ADAU1701/ ADAU1702 in Self-Boot Mode
• AN-951 Application Note, Using Hardware Controls with
SigmaDSP GPIO Pins
• AN-1006 Application Note, Using the EVAL-ADUSB2EBZ
• SigmaStudio help file (included with the software)
EVALUATION BOARD BLOCK DIAGRAM
CPLD
ANALOG
INPUTS
ANALOG
OUTPUTS
S/PDIF
RECEIVER AND
TRANSMITTER
POWER SUPPLY
REGULATION
USB
INTERFACE
MULTI-
PURPOSE
PIN
INTERFACE
ADAU1401A
08697-001
Figure 1.
