Analog Devices SHARC EZ-Extender User manual

a
SHARC®Audio
EZ-Extender®Manual
Revision 1.1, August 2012
Part Number
82-000223-01
Analog Devices, Inc.
One Technology Way
Norwood, Mass. 02062-9106

Copyright Information
© 2012 Analog Devices, Inc., ALL RIGHTS RESERVED. This docu-
ment may not be reproduced in any form without prior, express written
consent from Analog Devices, Inc.
Printed in the USA.
Disclaimer
Analog Devices, Inc. reserves the right to change this product without
prior notice. Information furnished by Analog 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 impli-
cation or otherwise under the patent rights of Analog Devices, Inc.
Trademark and Service Mark Notice
The Analog Devices logo, CrossCore, EngineerZone, EZ-Board,
EZ-Extender, SHARC, and VisualDSP++ 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 SHARC Audio EZ-Extender is designed to be used solely in a labora-
tory 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 SHARC Audio EZ-Extender has been certified to comply with the
essential requirements of the European EMC directive 2004/108/EC and
therefore carries the “CE” mark.
The SHARC Audio EZ-Extender has been appended to Analog Devices,
Inc. EMC Technical File (EMC TF) referenced DSPTOOLS1, issue 2
dated June 4, 2008 and was declared CE compliant by an appointed Noti-
fied Body (No.0673) as listed below.
Notified Body Statement of Compliance: Z600ANA2.037, dated
May 21, 2010.
Issued by: Technology International (Europe) Limited
56 Shrivenham Hundred Business Park
Shrivenham, Swindon, SN6 8TY, UK
The SHARC Audio EZ-Extender 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 extender boards in the protective ship-
ping package.

SHARC Audio EZ-Extender Manual v
CONTENTS
PREFACE
Product Overview .......................................................................... x
Purpose of This Manual ................................................................ xi
Intended Audience ........................................................................ xi
Manual Contents ......................................................................... xii
What’s New in This Manual ......................................................... xii
Technical Support ....................................................................... xiii
Supported Products ...................................................................... xiv
Product Information .................................................................... xiv
Analog Devices Web Site ........................................................ xiv
EngineerZone .......................................................................... xv
Related Documents ...................................................................... xvi
USING THE SHARC AUDIO EZ-EXTENDER
Package Contents .......................................................................... 1-2
SHARC Audio EZ-Extender Default Configuration ....................... 1-2
SHARC Audio EZ-Extender Setup ................................................ 1-4
Audio Interface ............................................................................. 1-4
Example Programs ........................................................................ 1-6

Contents
vi SHARC Audio EZ-Extender Manual
SHARC AUDIO EZ-EXTENDER HARDWARE REFERENCE
System Architecture ...................................................................... 2-2
Configuration Switches ................................................................. 2-5
Audio Loopback Switches (SW1–6) ......................................... 2-6
Audio In1 Left Selection Switch (SW7) ................................... 2-6
Audio In1 Right Selection Switch (SW8) ................................. 2-7
Audio In2 Left Selection Switch (SW9) ................................... 2-7
Audio In2 Right Selection Switch (SW10) ............................... 2-8
Audio In3 Left Selection Switch (SW11) ................................. 2-9
Audio In3 Right Selection Switch (SW12) ............................... 2-9
Audio In4 Left Selection Switch (SW13) ............................... 2-10
Audio In4 Right Selection Switch (SW14) ............................. 2-11
Audio In5 Left Selection Switch (SW15) ............................... 2-11
Audio In5 Right Selection Switch (SW16) ............................. 2-12
Audio In6 Left Selection Switch (SW17) ............................... 2-13
Audio In8 Right Selection Switch (SW18) ............................. 2-13
Memory Configuration Switch (SW19) ................................. 2-14
Soft Reset Enable Switch (SW20) .......................................... 2-15
Power LED ................................................................................. 2-16

SHARC Audio EZ-Extender Manual vii
Contents
Connectors ................................................................................. 2-17
Expansion Interface II Connector (J1) ................................... 2-18
RCA Audio Connectors (J2–7) .............................................. 2-18
Differential In/Out Connectors (P1–5) .................................. 2-19
SHARC AUDIO EZ-EXTENDER BILL OF MATERIALS
SHARC AUDIO EZ-EXTENDER SCHEMATIC
INDEX

Contents
viii SHARC Audio EZ-Extender Manual

SHARC Audio EZ-Extender Manual ix
PREFACE
Thank you for purchasing the SHARC® Audio EZ-Extender®, Analog
Devices, Inc. daughter board to the EZ-Board®evaluation system for the
ADSP-21xxx processors.
SHARC processors are based on a 32-bit super Harvard architecture that
includes a unique memory architecture comprised of two large on-chip,
dual-ported SRAM blocks coupled with a sophisticated IO processor,
which gives a SHARC processor the bandwidth for sustained high-speed
computations. SHARC processors represents today’s de facto standard for
floating-point processing, targeted toward premium audio applications.
The EZ-Board and SHARC Audio EZ-Extender are designed to be used
in conjunction with the CrossCore®Embedded Studio (CCES) and Visu-
alDSP++®software development environments. The development
environment facilitates advanced application code development and
debug, such as:
• Create, compile, assemble, and link application programs written
in C++, C, and SHARC Audio EZ-Extender assembly
• Load, run, step, halt, and set breakpoints in application programs
• Read and write data and program memory
• Read and write core and peripheral registers
• Plot memory
To learn more about Analog Devices development software, go to
http://www.analog.com/dsp/tools.

Product Overview
x SHARC Audio EZ-Extender Manual
Product Overview
The SHARC Audio EZ-Extender is a separately sold daughter board that
plugs onto the expansion interface II of the ADSP-21469 EZ-Board and
all future SHARC evaluation boards. The daughter board aids the design
and prototyping phases of analog audio applications.
The board extends the capabilities of the evaluation system by providing a
connection to three analog audio codecs.
The SHARC Audio EZ-Extender features:
• Analog audio interface
• AD1939 – three Analog Devices 192 kHz audio codecs
• 24 channels of audio out (twelve stereo channels)
• Twelve channels of audio in (six stereo channels)
• TDM and I2S modes at 48 KHz, 96 KHz, and 192 KHz
sample rates
• Single-ended input/output
• Three RCA phono jack inputs (4 x 1)
• Three RCA phono jack outputs (4 x 2)
• Differential input/output
• Two DB25 connector inputs
• Three DB25 connector outputs
All of the power necessary to operate the extender is derived from the mat-
ing EZ-Board. Before using any of the interfaces, follow the setup
procedure in “SHARC Audio EZ-Extender Setup” on page 1-4.

SHARC Audio EZ-Extender Manual xi
Preface
Example programs are available to demonstrate capabilities of the SHARC
Audio EZ-Extender board.
Purpose of This Manual
The SHARC Audio EZ-Extender Manual describes operation and configu-
ration of the extender board components. A schematic and a bill of
materials are provided as a reference guide for future SHARC processor
board designs.
Intended Audience
This manual is a user’s guide and reference to the SHARC Audio
EZ-Extender. Programmers who are familiar with the Analog Devices
SHARC processor architecture, operation, and development tools are the
primary audience for this manual.
Programmers who are unfamiliar with Analog Devices processors can use
this manual but should supplement it with other texts that describe your
target architecture. For the locations of these documents, see “Related
Documents”.
Programmers who are unfamiliar with CCES or VisualDSP++ should refer
to the online help and user’s manuals.

Manual Contents
xii SHARC Audio EZ-Extender Manual
Manual Contents
The manual consists of:
• Chapter 1, “Using the SHARC Audio EZ-Extender” on page 1-1
Provides basic board information.
• Chapter 2, “SHARC Audio EZ-Extender Hardware Reference” on
page 2-1
Provides information about the hardware aspects of the board.
• Appendix A, “SHARC Audio EZ-Extender Bill of Materials” on
page A-1
Provides a list of components used to manufacture the board.
• Appendix B, “SHARC Audio EZ-Extender Schematic” on
page B-1
Provides the resources to allow board-level debugging or to use as a
reference guide. Appendix B is part of the online help.
What’s New in This Manual
This is revision 1.1 of the SHARC Audio EZ-Extender Manual. The man-
ual has been updated to include CCES information. In addition,
modifications and corrections based on errata reports against the previous
manual revision have been made.
For the latest version of this manual, please refer to the Analog Devices
Web site.

SHARC Audio EZ-Extender Manual xiii
Preface
Technical Support
You can reach Analog Devices processors and DSP technical support in
the following ways:
• Post your questions in the processors and DSP support community
at EngineerZone®:
http://ez.analog.com/community/dsp
• Submit your questions to technical support directly at:
http://www.analog.com/support
• E-mail your questions about processors, DSPs, and tools develop-
ment software from CrossCore Embedded Studio or
VisualDSP++:
Choose Help > Email Support. This creates an e-mail to
[email protected] and automatically attaches
your CrossCore Embedded Studio or VisualDSP++ version infor-
mation and license.dat file.
• E-mail your questions about processors and processor applications
to:
[email protected] or
[email protected] (Greater China support)
•IntheUSA only, call 1-800-ANALOGD (1-800-262-5643)
• Contact your Analog Devices sales office or authorized distributor.
Locate one at:
www.analog.com/adi-sales

Supported Products
xiv SHARC Audio EZ-Extender Manual
• Send questions by mail to:
Processors and DSP Technical Support
Analog Devices, Inc.
Three Technology Way
P.O. Box 9106
Norwood, MA 02062-9106
USA
Supported Products
The SHARC Audio EZ-Extender is designed as an extender board to the
ADSP-214xx EZ-Board evaluation systems.
Product Information
Product information can be obtained from the Analog Devices Web site
and the online help.
Analog Devices Web Site
The Analog Devices Web site, www.analog.com, provides information
about a broad range of products—analog integrated circuits, amplifiers,
converters, and digital signal processors.
To access a complete technical library for each processor family, go to
http://www.analog.com/dsp/tools. The manuals selection opens a list of
current manuals related to the product as well as a link to the previous
revisions of the manuals. When locating your manual title, note a possible
errata check mark next to the title that leads to the current correction
report against the manual.
Also note, myAnalog is a free feature of the Analog Devices Web site that
allows customization of a Web page to display only the latest information

SHARC Audio EZ-Extender Manual xv
Preface
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
provides access to books, application notes, data sheets, code examples,
and more.
Visit myAnalog 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. It allows
you direct access to ADI technical support engineers. You can search
FAQs and technical information to get quick answers to your embedded
processing 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.

Related Documents
xvi SHARC Audio EZ-Extender Manual
Related Documents
For additional information about the product, refer to the following
publications.
Table 1. Related Processor Publications
Title Description
ADSP-214xx SHARC Processor Data Sheet General functional description, pinout, and
timing
ADSP-214xx SHARC Processor Hardware Reference Description of the internal processor archi-
tecture and all register functions
SHARC Processor Programming Reference Description of all allowed processor assembly
instructions

SHARC Audio EZ-Extender Manual 1-1
1 USING THE SHARC AUDIO
EZ-EXTENDER
This chapter describes the SHARC Audio EZ-Extender package contents,
configuration, installation procedure, and analog audio interface.
The information is presented in the following order.
•“Package Contents” on page 1-2
Describes the product’s package contents.
•“SHARC Audio EZ-Extender Default Configuration” on page 1-2
Describes the board’s default configuration.
•“SHARC Audio EZ-Extender Setup” on page 1-4
Provides the board’s setup procedure.
•“Audio Interface” on page 1-4
Describes the board’s analog audio interface.
•“Example Programs” on page 1-6
Describes the example programs installed with the board’s
software.
For more information about the mating ADSP-21469 processor, see docu-
ments referred to as “Related Documents”.

Package Contents
1-2 SHARC Audio EZ-Extender Manual
Package Contents
Your SHARC Audio EZ-Extender package contains the following items.
• SHARC Audio EZ-Extender board
• 3.5 mm stereo headphones
• 6-foot RCA audio cable
• 6-foot 3.5 mm/RCA x 2 Y-cable
• 3.5 mm stereo female to RCA male Y-cable
If any item is missing, contact the vendor where you purchased your
EZ-Extender or contact Analog Devices, Inc.
SHARC Audio EZ-Extender Default
Configuration
The SHARC Audio EZ-Extender board is designed to run outside your
personal computer as a standalone unit. You do not have to open your
computer case.
The SHARC Audio EZ-Extender 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 extender boards in the protective ship-
ping package.

SHARC Audio EZ-Extender Manual 1-3
Using the SHARC Audio EZ-Extender
When removing the extender board from the package, handle the board
carefully to avoid the discharge of static electricity, which may damage
some components. Figure 1-1 shows the default jumper and switch
settings, connector locations, and LED used in installation. Confirm that
your board is in the default configuration before using the board.
Figure 1-1. EZ-Extender Lite Hardware Setup

SHARC Audio EZ-Extender Setup
1-4 SHARC Audio EZ-Extender Manual
SHARC Audio EZ-Extender Setup
It is important to set up all components of the system containing the
SHARC Audio EZ-Extender, then apply power to the system. The follow-
ing procedure is recommended for the correct setup.
Power your system after these steps are completed:
1. Read the audio interface section in this chapter—the text provides
an overview of the interface capabilities.
2. Read “System Architecture” on page 2-2 to understand physical
connections of the daughter board. For detailed information, refer
to “SHARC Audio EZ-Extender Schematic” on page B-1.
3. Refer to the readme files in the Examples folder of the installation
directory. For custom setups, use “System Architecture” on
page 2-2 in conjunction with “SHARC Audio EZ-Extender Hard-
ware Reference” on page 2-1.
Audio Interface
The SHARC Audio EZ-Extender’s analog audio interface is comprised of
three Analog Devices AD1939 multichannel audio codecs.
The AD1939 is a high performance, single-chip codec featuring four ana-
log-to-digital converters (ADCs) for audio input and eight
digital-to-analog converters (DACs) for audio output. This translates to
twelve channels of audio in and twenty four channels of audio out. The
codec/extender can input and output data at a sample rate of up to
192 kHz on all channels.
The audio interface connections are shown in Figure 2-2; more details can
be found in “SHARC Audio EZ-Extender Schematic” on page B-1. The
three codec chips (referred to as “AD1939A”, “AD1939B”, and