Preface - Analog Devices EVAL-AD2428WD1BZ Manual

1 Preface

Thank you for purchasing the Analog Devices, Inc. EVAL-AD2428WD1BZ evaluation system.
In the default configuration (master mode), this evaluation board provides A
2
A B network. A PC host controls the AD2428 A
USB-to-I2C bridge. This allows the PC to directly discover and control an A
registers and monitor performance. Alternatively, the AD2428 master transceiver is controllable over the EI3 con-
nector through an external uController/DSP host device like the Blackfin ADSP-BF527 processor. In the master
mode, AD2428 digital audio signals interface directly to the ADAU1452 SigmaDSP
frame sync signals to the A
The evaluation board also supports local-powered slave mode with different jumper settings, where AD2428 digital
audio signals could interface directly to the ADAU1761 audio codec or three microphones, without the ADAU1452
SigmaDSP sitting in the middle of the signal chain. In the slave mode, the AD2428 transceiver drives clock and
frame sync signals to the ADAU1761 SigmaDSP for transmitting or receiving data. Three digital MEMS micro-
phones with PDM output feed the A
®
The SigmaStudio graphical development tool is the programming, development, and tuning software for the Sig-
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maDSP, A B and Sharc processors. Familiar audio processing blocks can be wired together as in a schematic, and the
compiler generates DSP-ready code and a control surface for setting and tuning parameters. This tool allows engi-
neers with no DSP code writing experience to easily implement a DSP into their design and yet is still powerful
enough to satisfy the demands of experienced DSP designers. SigmaStudio links with both Analog Devices evalua-
tion boards and production designs to provide full in-circuit real-time IC control.
SigmaStudio includes an extensive library of algorithms to perform audio processing such as filtering, mixing, and
dynamics processing, as well as basic low-level DSP functions and control blocks. Advanced record-side processing
algorithms such as Enhanced Stereo Capture and wind noise detection are included in the standard libraries. Plug-in
algorithms from Analog Devices and 3rd party partners can be added to SigmaStudio's drag-and-drop library.
Along with its graphical DSP signal flow development, SigmaStudio also includes other features to speed up the
design cycle from product concept to release. SigmaStudio includes tools for intuitively setting control registers, cal-
culating tables of filter coefficients, visualizing filter magnitude and phase responses, generating C header files, and
sequencing a series of controls to ease your transition from SigmaStudio to system implementation on your micro-
controller.
EVAL-AD2428WD1BZ A
2
B master transceiver I2C signals over the EVAL-ADUSB2EB
2
B network.
2
B bus slots in the slave mode.
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B Evaluation Board Manual
2
B master node functionality for an
2
B network, as well as to read back
®
, which provides the clock and
Preface
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