Analog Devices EVAL-AD2437A1MZ User manual

EVAL-AD2437A1MZ Manual
Revision 2.1 , August 2023
Part Number
EVAL-AD2437A1MZ
Analog Devices, Inc.
One Technology Way
Norwood, MA 02062-9106

Copyright Information
© 2023 Analog Devices, Inc., ALL RIGHTS RESERVED. This document may not be reproduced in any form
without prior, express written consent from Analog Devices, Inc.
Disclaimer
Analog Devices, Inc. reserves the right to change this product without prior notice. Information furnished by Ana-
log Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its
use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is
granted by implication or otherwise under the patent rights of Analog Devices, Inc.
Trademark and Service Mark Notice
The Analog Devices logo, Blackfin, SHARC, A2B, SigmaDSP, SigmaStudio+, and EngineerZone are registered
trademarks of Analog Devices, Inc.
All other brand and product names are trademarks or service marks of their respective owners.
Regulatory Compliance
The EVAL-AD2437A1MZ evaluation board is designed to be used solely in a laboratory environment. The board is
not intended for use as a consumer-end product or as a portion of a consumer-end product. The board is an open
system design, which does not include a shielded enclosure and, therefore, may cause interference to other electrical
devices in close proximity. This board should not be used in or near any medical equipment or RF devices.
The EVAL-AD2437A1MZ evaluation board contains ESD (electrostatic discharge) sensitive devices. Electrostatic
charges readily accumulate on the human body and equipment and can discharge without detection. Permanent
damage may occur on devices subjected to high-energy discharges. Proper ESD precautions are recommended to
avoid performance degradation or loss of functionality. Store unused boards in the protective shipping package.
EVAL-AD2437A1MZ Manual ii

Contents
Preface
Purpose of This Manual.................................................................................................................................1–2
Manual Contents ........................................................................................................................................... 1–2
Technical Support.......................................................................................................................................... 1–3
Supported Integrated Circuit ......................................................................................................................... 1–3
Supported Tools............................................................................................................................................. 1–3
Product Information...................................................................................................................................... 1–3
Analog Devices Website.............................................................................................................................. 1–4
EngineerZone ............................................................................................................................................. 1–4
Using the Board
Product Overview .......................................................................................................................................... 2–1
Package Contents........................................................................................................................................... 2–2
Default Configuration ................................................................................................................................... 2–2
Reference Design Information .......................................................................................................................2–3
AD2437 - Audio Bus A2B Transceiver ........................................................................................................... 2–4
ADAU1452 - SigmaDSP Digital Audio Processor.......................................................................................... 2–4
AD1937 - Four ADCs/Eight DACs with PLL, 192 kHz, 24-Bit Codec ........................................................ 2–5
ADA4841 - Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifiers..................................... 2–5
ADG774 - CMOS 3 V/5 V, Wide Bandwidth Quad 2:1 Mux........................................................................ 2–5
ADM6315 - Open-Drain Microprocessor Supervisory Circuit ......................................................................2–6
ADP2360 - 50 mA, 60 V, High Efficiency Buck Regulator............................................................................ 2–6
MAX16823AUE - High-Voltage, 3-Channel Linear High-Brightness LED Driver......................................... 2–6
MAX22503E -100Mbps Full-Duplex 3V/5V RS-485/RS-422 Transceiver with High EFT Immunity...........2–7
MMICT390200012 - Digital Output MEMS Microphone........................................................................... 2–7
Hardware Reference
Switches......................................................................................................................................................... 3–1
EVAL-AD2437A1MZ Manual iii

Reset Pushbutton ( SW1) ............................................................................................................................ 3–1
Gain ( S1) .................................................................................................................................................. 3–1
Connectors .................................................................................................................................................... 3–1
Power Plug ( P1) ........................................................................................................................................ 3–2
Wire-to-Board Terminal ( P2) .................................................................................................................... 3–2
SPDIF Optical Input ( P3)......................................................................................................................... 3–3
SPDIF Optical Output ( P5)...................................................................................................................... 3–3
ADAU1452 AUX ADC Connector ( P8).................................................................................................... 3–3
A2B ( P22 and P10) .................................................................................................................................. 3–3
Audio Input/Output ( P29 and P28) ........................................................................................................ 3–4
SigmaStudio+ ( P30).................................................................................................................................. 3–4
AD2437 Signals Connector ( P15) ............................................................................................................ 3–4
A2B Interface ( P32) .................................................................................................................................. 3–4
Jumpers ......................................................................................................................................................... 3–4
PDM CLK Select and 2-Step Discovery ( JP1).......................................................................................... 3–5
ADAU1452 I2C Bus Switch ( JP2 and JP3)......................................................................................... 3–5
LTC4368 Wakeup ( JP4)........................................................................................................................... 3–5
AD2437 SIO0 Routing ( JP6)................................................................................................................... 3–6
AD2437 SIO1 Routing ( JP9)................................................................................................................... 3–6
ADAU1452 CLK Select ( JP38)................................................................................................................ 3–6
USBi SPI Chip Select ( JP42) ................................................................................................................... 3–6
PWM Select ( JP47) ................................................................................................................................. 3–7
LEDs ............................................................................................................................................................. 3–7
Reset ( DS1) ............................................................................................................................................... 3–7
Power Status Indicator ( DS2, DS7, DS8) ................................................................................................. 3–7
USBi ( DS5) ............................................................................................................................................... 3–7
LTC4368 Circuit Breaker Status( DS3) ...................................................................................................... 3–8
ADAU1452 Status( DS4) ........................................................................................................................... 3–8
RGB LED( DS6) ........................................................................................................................................ 3–8
iv EVAL-AD2437A1MZ Manual

A2B Interrupt ( DS9).................................................................................................................................. 3–8
SIO2 Status ( DS10) .................................................................................................................................. 3–8
I2C Bus Switch ( DS11)............................................................................................................................. 3–8
EVAL-AD2437A1MZ Manual v

1 Preface
Thank you for purchasing the Analog Devices, Inc. EVAL-AD2437A1MZ evaluation board.
The EVAL-AD2437A1MZ is an evaluation board to evaluate various peripherals of the AD2437 A2B (Audio Bus)
transceiver. Refer to the datasheet/manual to get more details about the AD2437.
The EVAL-AD2437A1MZ can be configured to be a Main Node or Local-Powered Sub (LPS) Node. The EVAL-
AD2437A1MZ can be connected to a Main Node, Local Powered Sub (LPS) or a Bus Powred Sub (BPS) node.
These evaluation boards are intended to be used with the SigmaStudio+ graphical development tool.
Block Diagram of Evaluation Board:
In the default configuration (Main Mode), this evaluation board provides A2B main node functionality for an A2B
network.
Preface
EVAL-AD2437A1MZ Manual 1–1

A PC host controls the AD2437 A2B main transceiver I2C/SPI signals over the USB-to- I2C/SPI bridge, US-
Bi(EVAL-ADUSB2EB). This allows SigmaStudio+ to directly discover and control an A2B network as well as to
read back registers and monitor performance. Alternatively, the EVAL-AD2437A1MZ is controllable over a SOM
interface through an external DSP host device like the SC594. In the main mode, AD2437 digital audio signals
interface directly to the ADAU1452 SigmaDSPTM, which provides the clock and frame sync signals to the A2B net-
work.
The evaluation board also supports local-powered sub mode with different jumper settings, where AD2437 digital
audio signals could interface to ADAU1937 audio codec or four microphones with the help of the ADAU1452. In
the sub mode, AD2437 drives clock and frame sync to the ADAU1937 and ADAU1452 for transmitting or receiv-
ing data. Four digital MEMS microphones interface directly with the transceiver, they can be either downstream or
upstream.
The SigmaStudio+®graphical development tool is the programming, development, and tuning software for the Sig-
maDSP, A2B, 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
engineers 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,
calculating 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
microcontroller.
Purpose of This Manual
This manual provides instructions for installing the product hardware (board). This manual describes the operation
and configuration of board components and provides guidelines for running code on the board.
Manual Contents
The manual consists of:
•Using the board
Provides basic board information.
•Hardware Reference
Purpose of This Manual
1–2 EVAL-AD2437A1MZ Manual

Provides information about the hardware aspects of the board.
•Bill of Materials
A companion file in PDF format that lists all of the components used on the board is available on the website
at https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/EVAL-
AD2437A1MZ.html.
•Schematic
A companion file in PDF format documenting all of the circuits used on the board is available on the website
at https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/EVAL-
AD2437A1MZ.html.
Technical Support
You can reach Analog Devices technical support in one of the following ways:
•Post your questions in the A2B support community at EngineerZone®:
http://ez.analog.com/a2b/
•Submit your questions to technical support directly at:
http://www.analog.com/support
•E-mail your questions about A2B transceiver applications and SigmaStudio+ to:
[email protected]
•Contact your Analog Devices sales office or authorized distributor. Locate one at:
http://www.analog.com/adi-sales
Supported Integrated Circuit
This evaluation system supports the Analog Devices AD2437 IC.
Supported Tools
Information about SigmaStudio+ and the A2B software plug-in for the EVAL-AD2437A1MZ evaluation board is
available at: www.analog.com/SigmaStudio+.
Product Information
Information about the AD2437 product family is available at: www.analog.com/A2B
Technical Support
EVAL-AD2437A1MZ Manual 1–3

Analog Devices Website
The Analog Devices website, http://www.analog.com, provides information about a broad range of products - ana-
log integrated circuits, amplifiers, converters, transceivers, and digital signal processors.
Also note, MyAnalog.com is a free feature of the Analog Devices website that allows customization of a web page to
display only the latest information about products you are interested in. You can choose to receive weekly e-mail
notifications containing updates to the web pages that meet your interests, including documentation errata against
all manuals. MyAnalog.com provides access to books, application notes, data sheets, code examples, and more.
Visit MyAnalog.com to sign up. If you are a registered user, just log on. Your user name is your e-mail address.
EngineerZone
EngineerZone is a technical support forum from Analog Devices, Inc. It allows you direct access to ADI technical
support engineers. You can search FAQs and technical information to get quick answers to your embedded process-
ing and DSP design questions.
Use EngineerZone to connect with other DSP developers who face similar design challenges. You can also use this
open forum to share knowledge and collaborate with the ADI support team and your peers. Visit http://
ez.analog.com to sign up.
Product Information
1–4 EVAL-AD2437A1MZ Manual

2 Using the Board
This chapter provides information on the major components and peripherals on the board, along with instructions
for installing and setting up the emulation software.
Product Overview
The board features:
•Analog Devices AD2437 - Audio Bus Transceiver
•Analog Devices ADA4841 - Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifiers
•Analog Devices ADG774 - CMOS 3 V/5 V, Wide Bandwidth Quad 2:1 Mux
•Analog Devices ADM6315 - Open-Drain Microprocessor Supervisory Circuit
•Analog Devices ADP2360 - 50 mA, 60 V, High Efficiency Buck Regulator
•Analog Devices MAX16823AUE - High-Voltage, 3-Channel Linear High-Brightness LED Driver
•Analog Devices MAX22503E -100Mbps Full-Duplex 3V/5V RS-485/RS-422 Transceiver with High EFT Im-
munity
•TDK MMICT390200012 - Digital Output MEMS Microphone
•Audio
•Analog Devices ADAU1452 - SigmaDSP Digital Audio Processor
•Analog Devices AD1937 - Four ADCs/Eight DACs with PLL, 192 kHz, 24-Bit Codec
•Input and Output SPDIF Connectors with galvanic isolation
•ADC Input and DAC Output 3.5mm connectors
•A2B
•Two RJ45 Shielded Terminals
•LEDs
•11 LEDs: more details will be in LED section
Using the Board
EVAL-AD2437A1MZ Manual 2–1