Analog Devices ADSP-2181 User manual

a
ADSP-2181 EZ-KIT Lite®
Evaluation System Manual
Revision 2.1, October 2003
Part Number
82-000543-01
Analog Devices, Inc.
One Technology Way
Norwood, Mass. 02062-9106

Copyright Information
© 2003 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.
Limited Warranty
The EZ-KIT Lite evaluation system is warranted against defects in materi-
als and workmanship for a period of one year from the date of purchase
from Analog Devices or from an authorized dealer.
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, Blackfin, and EZ-KIT Lite are registered trade-
marks of Analog Devices, Inc.
VisualDSP++ is a trademark of Analog Devices, Inc.
All other brand and product names are trademarks or service marks of
their respective owners.

ADSP-2181 EZ-KIT Lite Evaluation System Manual iii
CONTENTS
PREFACE
Purpose of This Manual .................................................................. ix
Intended Audience ........................................................................... x
Manual Contents ............................................................................. x
What’s New in This Manual ............................................................ xi
Technical or Customer Support ....................................................... xi
Supported Processors ...................................................................... xii
Product Information ..................................................................... xiii
MyAnalog.com ........................................................................ xiii
DSP Product Information ........................................................ xiii
Related Documents .................................................................. xiv
Online Documentation ............................................................. xv
Printed Manuals ....................................................................... xvi
VisualDSP++ Documentation Set ......................................... xvi
Hardware Manuals ............................................................... xvi
Data Sheets .......................................................................... xvi
Contacting DSP Publications ................................................... xvii
Notation Conventions ................................................................... xvii

CONTENTS
iv ADSP-2181 EZ-KIT Lite Evaluation System Manual
GETTING STARTED
Contents of EZ-KIT Lite Package ................................................. 1-2
System Requirements .................................................................... 1-3
Installation Tasks .......................................................................... 1-3
Setting Up EZ-KIT Lite Hardware .......................................... 1-4
Installing VisualDSP++ and EZ-KIT Lite Software .................. 1-5
Installing VisualDSP++ License ............................................... 1-6
USING EZ-KIT LITE SOFTWARE
EZ-KIT Lite License Restrictions .................................................. 2-2
Memory Map ............................................................................... 2-2
Standard Operations ..................................................................... 2-3
Default Settings ...................................................................... 2-3
Input and Output Devices ....................................................... 2-3
Flags .................................................................................. 2-4
Interrupts ........................................................................... 2-4
Serial Ports ......................................................................... 2-5
POST Routines ....................................................................... 2-5
Memory Checks ................................................................. 2-6
UART Checks .................................................................... 2-6
AD1847 Codec Check and Initialization ............................. 2-7
Monitor Program Operations .................................................. 2-7
Halt loop ........................................................................... 2-7
UART ISR ......................................................................... 2-8

ADSP-2181 EZ-KIT Lite Evaluation System Manual v
CONTENTS
Command Processing .......................................................... 2-8
Software Breakpoints ............................................................... 2-9
AD1847 Codec Dual Analog Front End ................................... 2-9
AD1847 Codec Transmissions ................................................. 2-9
Using EZ-KIT Lite VisualDSP++ Interface .................................. 2-10
Developing Programs ............................................................. 2-10
Starting Visual DSP++ ........................................................... 2-11
Debugging With EZ-KIT Lite ............................................... 2-13
Loading Programs .................................................................. 2-13
Registers and Memory ....................................................... 2-14
Setting Breakpoints and Stepping ...................................... 2-14
Resetting EZ-KIT Lite Board ............................................ 2-14
Example Programs ................................................................. 2-15
ADPCM ........................................................................... 2-15
DTMF ............................................................................. 2-15
ECHO ............................................................................. 2-15
FIRDEMO ....................................................................... 2-16
LPC2K4 ........................................................................... 2-16
LPC7K8 ........................................................................... 2-16
PRIMES ........................................................................... 2-17
EZ-KIT HARDWARE REFERENCE
System Architecture ...................................................................... 3-2
Board Layout ................................................................................ 3-3
Socketed Memory .................................................................... 3-4

CONTENTS
vi ADSP-2181 EZ-KIT Lite Evaluation System Manual
User LEDs .............................................................................. 3-4
Switches .................................................................................. 3-4
Connectors ................................................................................... 3-5
Expansion Port Connectors ..................................................... 3-7
Power Connector .................................................................... 3-9
European Power Supply Connections .................................. 3-9
AD1847 Codec Connectors .................................................... 3-9
EPROM Jumper Settings ...................................................... 3-10
EZ-ICE Connector ............................................................... 3-12
Hardware Operation ............................................................. 3-13
Hardware Debugging ............................................................ 3-13
Designing EZ-ICE Compatible Systems ...................................... 3-14
RESTRICTIONS
BILL OF MATERIALS
INDEX

ADSP-2181 EZ-KIT Lite Evaluation System Manual vii
PREFACE
Thank you for purchasing the ADSP-2181 EZ-KIT Lite®, Analog Devices
(ADI) evaluation system for ADSP-2181 DSPs.
The ADSP-2181 DSP is a single-chip microcomputer optimized for digi-
tal signal processing (DSP) and other high-speed numeric processing
applications.
The evaluation board is designed to be used in conjunction with
VisualDSP++™ development environment to test the capabilities of the
ADSP-2181 DSPs. The VisualDSP++ software gives you the ability to
perform advanced application code development and debug, such as:
• Create, compile, assemble, and link application programs written
in C++, C and ADSP-2181 assembly
• Load, run, step, halt, and set breakpoints in application program
• Read and write data and program memory
• Read and write core and peripheral registers
• Plot memory
You can access the ADSP-2181 processor from a personal computer (PC)
through a serial port or an optional emulator. The monitor program gives
you complete target debug capability through the serial port. In contrast,
the emulator allows the PC to perform in-circuit emulation through the
processor’s emulation port.

viii ADSP-2181 EZ-KIT Lite Evaluation System Manual
The boards features:
• Analog Devices ADSP-2181SK-133 processor
!Operating at an instruction rate of 33 MHz (16.667 exter-
nal clock)
• Analog Audio Interface
!AD1847 – Analog Devices stereo codec
• Analog Inputs
!One stereo pair of 2V RMS AC coupled line-level inputs
!One stereo pair of 20 mV RMS AC coupled microphone
inputs
• Analog Outputs
!One stereo pair of 1V RMS AC coupled line-level outputs
• Power Source
!8 to 10V DC at 300 mA
• Environment
!0 to 70ocentigrade
!10 to 90 percent relative humidity (non condensing)
• RS-232 Interface
• Socketed EPROM
• User push buttons
• Expansion connectors
• User configurable jumper

ADSP-2181 EZ-KIT Lite Evaluation System Manual ix
Preface
The ADSP-2181 EZ-KIT Lite board is equipped with hardware that facil-
itates interactive demonstrations. Push button switches and user
programmable LEDs provide user control and board status checking.
Additionally, the AD1847 SoundPort codec provides access to an audio
input (selectable as line level or microphone) and an audio output (line
level). To learn more about AD1847 codec, refer to the AD1847 General
Purpose Analog Front End data sheet found at
http://www.analog.com/Uploaded-
Files/Obsolete_Data_Sheets/1215246AD1847.pdf.
The ADSP-2181 EZ-KIT Lite includes a monitor program stored in the
socketed EPROM. The monitor program lets the board communicate
over the serial port to a PC. This monitor program lets you download,
execute, and debug ADSP-2181 programs.
You can also connect an EZ-ICE (in-circuit emulator) to the EZ-KIT
Lite. Through the EZ-ICE, you can load programs, start and stop pro-
gram execution, observe and alter registers and memory, and perform
other debugging operations. To learn more about Analog Devices emula-
tors and DSP development tools, go to
http://www.analog.com/dsp/tools/.
Additionally, the EZ-KIT Lite provides user installed expansion connec-
tors that let you examine processor signals, as well as provide an interface
for host control.
"The VisualDSP++ licence provided with this EZ-KIT Lite evalua-
tion system limits the size of a user program to 8K bytes of internal
memory.
Purpose of This Manual
The ADSP-2181 EZ-KIT Lite Evaluation System Manual provides instruc-
tions for using the hardware and installing the software on your PC. This
manual provides guidelines for running your own code on the

Intended Audience
x ADSP-2181 EZ-KIT Lite Evaluation System Manual
ADSP-2181 EZ-KIT Lite. The manual also describes the operation and
configuration of the evaluation board’s components. Finally, a bill of
materials are provided as a reference for future ADSP-2181 board designs.
Intended Audience
This manual is a user’s guide and reference to the ADSP-2181 EZ-KIT
Lite evaluation system. Programmers who are familiar with the Analog
Devices processor architecture, operation, and programming are the pri-
mary audience for this manual.
Programmers who are unfamiliar with Analog Devices 16-bit fixed-point
processors can use this manual in conjunction with the ADSP-218x DSP
Hardware Reference and the ADSP-218x DSP Instruction Set Reference,
which describe the processor architecture and instruction set. Program-
mers who are unfamiliar with VisualDSP++ should refer to the
VisualDSP++ online Help and the VisualDSP++ user’s or getting started
guides. For the locations of these documents, refer to “Related
Documents”.
Manual Contents
The manual consists of:
• Chapter 1,“Getting Started” on page 1-1
Provides software and hardware installation procedures, PC system
requirements, and basic board information.
• Chapter 2, “Using EZ-KIT LITE Software” on page 2-1
Provides information on the EZ-KIT Lite from a programmer’s
perspective and provides an easy-to-access memory map.

ADSP-2181 EZ-KIT Lite Evaluation System Manual xi
Preface
• Chapter 3, “EZ-KIT Hardware Reference” on page 3-1
Provides information on the hardware aspects of the evaluation
system.
• Appendix A, “Restrictions” on page A-1
Provides a list of restrictions applicable to Release 1.1 of the
ADSP-2181 EZ-KIT Lite evaluation board.
• Appendix B, “Bill Of Materials” on page B-1
Provides a list of components used to manufacture the EZ-KIT
Lite.
What’s New in This Manual
This is the second revision of the ADSP-2181 EZ-KIT Lite Evaluation Sys-
tem Manual. The manual provides the updated listing of related
documents, updated installation procedure and Bill of Materials, and
additional information on the processor’s internal memory.
Technical or Customer Support
You can reach DSP Tools Support in the following ways.
• Visit the DSP Development Tools website at
www.analog.com/technology/dsp/developmentTools/index.html
• Email questions to
[email protected]
• Phone questions to 1-800-ANALOGD
• Contact your ADI local sales office or authorized distributor
• Send questions by mail to

Supported Processors
xii ADSP-2181 EZ-KIT Lite Evaluation System Manual
Analog Devices, Inc.
One Technology Way
P.O. Box 9106
Norwood, MA 02062-9106
USA
Supported Processors
The ADSP-2181 EZ-KIT Lite evaluation system supports ADSP-2181
Analog Devices microprocessors.

ADSP-2181 EZ-KIT Lite Evaluation System Manual xiii
Preface
Product Information
You can obtain product information from the Analog Devices website,
from the product CD-ROM, or from the printed publications (manuals).
Analog Devices is online at www.analog.com. Our website provides infor-
mation about a broad range of products—analog integrated circuits,
amplifiers, converters, and digital signal processors.
MyAnalog.com
MyAnalog.com is a free feature of the Analog Devices website that allows
customization of a webpage to display only the latest information on
products you are interested in. You can also choose to receive weekly email
notification containing updates to the webpages that meet your interests.
MyAnalog.com provides access to books, application notes, data sheets,
code examples, and more.
Registration:
Visit www.myanalog.com to sign up. Click Register to use MyAnalog.com.
Registration takes about five minutes and serves as means for you to select
the information you want to receive.
If you are already a registered user, just log on. Your user name is your
email address.
DSP Product Information
For information on digital signal processors, visit our website at
www.analog.com/dsp, which provides access to technical publications, data
sheets, application notes, product overviews, and product announcements.

Product Information
xiv ADSP-2181 EZ-KIT Lite Evaluation System Manual
You may also obtain additional information about Analog Devices and its
products in any of the following ways.
• Email questions or requests for information to
[email protected]
• Fax questions or requests for information to 1-781-461-3010
(North America) or [phone] (Europe)
Related Documents
For information on product related development software, see the follow-
ing publications.
Table 1. Related DSP Publications
Title Description
ADSP-2181 DSP Microcomputer Data Sheet General functional description, pinout, and
timing.
ADSP-218x DSP Hardware Reference Description of internal processor architecture
and all register functions.
ADSP-218x DSP Instruction Set Reference Description of all allowed processor assembly
instructions.
Table 2. Related VisualDSP++ Publications
Title Description
VisualDSP++ 3.5 User’s Guide for 16-Bit Proces-
sors Detailed description of VisualDSP++ 3.5 fea- tures and usage.
VisualDSP++ 3.5 Assembler and Preprocessor
Manual for ADSP-218x and 219x Processors Description of the assembler function and commands for processors.
VisualDSP++ 3.5 C Complier and Library Man-
ual for ADSP-218x Processors Description of the complier function and com- mands for processors

ADSP-2181 EZ-KIT Lite Evaluation System Manual xv
BookTitle2
Preface
The listed documents can be found through online Help or in the Docs
folder of your VisualDSP++ installation. Most documents are available in
printed form.
"If you plan to use the EZ-KIT Lite board in conjunction with a
JTAG emulator, refer to the documentation that accompanies the
emulator.
Online Documentation
Your software installation kit includes online Help as part of the Win-
dows® interface. These help files provide information about
VisualDSP++ and the ADSP-2181 EZ-KIT Lite evaluation system.
To view VisualDSP++ Help, click on the Help menu item or go to the
Windows task bar and select Start -->Programs -->VisualDSP -->Visu-
alDSP++ Documentation.
To view ADSP-2181 EZ-KIT Lite Help, which now is a part of the Visu-
alDSP++ Help system, go the Contents tab of the Help window and select
Manuals --> ADSP-BF533 EZ-KIT Lite.
For more documentation, please go to
http://www.analog.com/technology/dsp/library.html.
VisualDSP++ 3.5 Linker & Utilities Manual for
16-Bit Processors Description of the linker function and com- mands for 16-bit processors.
VisualDSP++ 3.5 Loader Manual for 16-Bit
Processors Description of the loader/splitter function and commands for 16-bit processors.
Table 2. Related VisualDSP++ Publications (Cont’d)
Title Description

Product Information
xvi ADSP-2181 EZ-KIT Lite Evaluation System Manual
BookTitle2
Printed Manuals
For general questions regarding literature ordering, call the Literature
Center at 1-800-ANALOGD (1-800-262-5643) and follow the prompts.
VisualDSP++ Documentation Set
Printed copies of VisualDSP++ manuals may be purchased through Ana-
log Devices Customer Service at 1-781-329-4700; ask for a Customer
Service representative. The manuals can be purchased only as a kit. For
additional information, call 1-603-883-2430.
If you do not have an account with Analog Devices, you will be referred to
Analog Devices distributors. To get information on our distributors, log
onto www.analog.com/salesdir/continent.asp.
Hardware Manuals
Printed copies of hardware reference and instruction set reference manuals
can be ordered through the Literature Center or downloaded from the
Analog Devices website. The phone number is 1-800-ANALOGD
(1-800-262-5643). The manuals can be ordered by a title or by product
number located on the back cover of each manual.
Data Sheets
All data sheets can be downloaded from the Analog Devices website. As a
general rule, printed copies of data sheets with a letter suffix (L, M, N, S)
can be obtained from the Literature Center at 1-800-ANALOGD
(1-800-262-5643) or downloaded from the website. Data sheets without
the suffix can be downloaded from the website only—no hard copies are
available. You can ask for the data sheet by part name or by product
number.

ADSP-2181 EZ-KIT Lite Evaluation System Manual xvii
BookTitle2
Preface
If you want to have a data sheet faxed to you, the phone number for that
service is 1-800-446-6212. Follow the prompts and a list of data sheet
code numbers will be faxed to you. Call the Literature Center first to find
out if requested data sheets are available.
Contacting DSP Publications
Please send your comments and recommendations on how to improve our
manuals and online Help. You can contact us at
[email protected] .
Notation Conventions
The following table identifies and describes text conventions used in this
manual.
"Additional conventions, which apply only to specific chapters, may
appear throughout this document.
Example Description
Close command
(File menu) or OK Text in bold style indicates the location of an item within the VisualDSP++ environment’s and boards’ menu system and user interface
items.
{this | that} Alternative required items in syntax descriptions appear within curly
brackets separated by vertical bars; read the example as this or that.
[this | that] Optional items in syntax descriptions appear within brackets and sepa-
rated by vertical bars; read the example as an optional this or that.
[this,…] Optional item lists in syntax descriptions appear within brackets delim-
ited by commas and terminated with an ellipsis; read the example as an
optional comma-separated list of this.
PF9-0 Registers, connectors, pins, commands, directives, keywords, code exam-
ples, and feature names are in text with letter gothic font.
filename Non-keyword placeholders appear in text with italic style format.

Notation Conventions
xviii ADSP-2181 EZ-KIT Lite Evaluation System Manual
BookTitle2
Note: A note providing information of special interest or identifying a
related topic. In the online version of this book, the word Note appears
instead of this symbol.
Caution: A caution providing information about critical design or programming
issues that influence operation of a product. In the online version of this
book, the word Caution appears instead of this symbol.
Example Description

ADSP-2181 EZ-KIT Lite Evaluation System Manual 1-1
1 GETTING STARTED
This chapter provides the information you need to begin using
ADSP-2181 EZ-KIT Lite evaluation system. For correct operation, install
the software and hardware in the order presented in “Installation Tasks”
on page 1-3.
The chapter includes the following sections.
•“Contents of EZ-KIT Lite Package” on page 1-2
Provides a list of the components shipped with this EZ-KIT Lite
evaluation system.
•“System Requirements” on page 1-3
Describes the minimum requirements for the PC to work with the
EZ-KIT Lite evaluation system.
•“Installation Tasks” on page 1-3
Describes the step-by-step procedures for setting up the hardware
and software.

Contents of EZ-KIT Lite Package
1-2 ADSP-2181 EZ-KIT Lite Evaluation System Manual
Contents of EZ-KIT Lite Package
Your ADSP-2181 EZ-KIT Lite evaluation system package contains the
following items.
• ADSP-2181 EZ-KIT Lite board
• Power cable with 8-10V DC power supply
• RS-232 serial port 9-pin cable
• CD containing:
!VisualDSP++ for 16-bit processors with a limited license
!ADSP-2181 EZ-KIT Lite debug software
!Example programs
!ADSP-2181 EZ-KIT Lite Evaluation System Manual (this
document)
If any item is missing, contact the vendor where you purchased your
EZ-KIT Lite or contact Analog Devices, Inc.
The EZ-KIT Lite evaluation system contains ESD
(electrostatic discharge) sensitive devices. Electro-
static 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
EZ-KIT Lite boards in the protective shipping
package.