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.