Analog Devices ADSP-21065L EZ-KIT Lite User manual

ADSP-21065L EZ-KIT Lite
Evaluation System Manual
Part Number: 82-000490-01
Revision 2.0
January 2003
www.BDTIC.com/ADI

Notice
Analog Devices, Inc. reserves the right to make changes to or to discontinue any product or service
identified in this publication without notice.
Analog Devices assumes no liability for Analog Devices applications assistance, customer product design,
customer software performance, or infringement of patents or services described herein. In addition,
Analog Devices shall not be held liable for special, collateral, incidental or consequential damages in
connection with or arising out of the furnishing, performance, or use of this product.
Analog Devices products are not intended for use in life-support applications, devices, or systems. Use of
an Analog Devices product in such applications without the written consent of the Analog Devices officer
is prohibited.
Users are restricted from copying, modifying, distributing, reverse engineering, and reverse assembling or
reverse compiling the ADSP-21065L EZ-KIT Lite operational software (one copy may be made for back-
up purposes only).
No part of this document may be reproduced in any form without permission.
Trademark and Service Mark Notice
The Analog Devices logo, SHARC, the SHARC logo, VisualDSP, the VisualDSP logo, and EZ-ICE are
registered trademarks; and TigerSHARC, the TigerSHARC logo, White Mountain DSP, VisualDSP++, the
VisualDSP++ logo, Apex-ICE, EZ-KIT Lite, Mountain-ICE, Summit-ICE, Trek-ICE, and The DSP
Collaborative are trademarks of Analog Devices, Inc.
Microsoft and Windows are registered trademarks and Windows NT is a trademark of Microsoft
Corporation.
Adobe and Acrobat are trademarks of Adobe Systems Incorporated.
All other brand and product names are trademarks or service marks of their respective owners.
Limited Warranty
The ADSP-21065L EZ-KIT Lite hardware is warranted against defects in materials and workmanship for a
period of one year from the date of purchase from Analog Devices or from an authorized dealer.
Copyright © 2000-2003, Analog Devices, Inc. All rights reserved.
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TABLE OF CONTENTS
LIST OF TABLES.......................................................................................................................................4
LIST OF FIGURES.....................................................................................................................................6
1 INTRODUCTION ...............................................................................................................................7
1.1 FOR MORE INFORMATION ABOUT ANALOG DEVICES, INC. PRODUCTS ..........................................8
1.2 FOR TECHNICAL OR CUSTOMER SUPPORT ......................................................................................8
1.3 PURPOSE OF THIS MANUAL ............................................................................................................8
1.4 INTENDED AUDIENCE .....................................................................................................................8
1.5 MANUAL CONTENTS DESCRIPTION.................................................................................................9
1.6 DOCUMENTS AND RELATED PRODUCTS .......................................................................................10
2 GETTING STARTED.......................................................................................................................11
2.1 OVERVIEW ...................................................................................................................................11
2.2 CONTENTS OF YOUR EZ-KIT LITE PACKAGE...............................................................................11
2.3 PC CONFIGURATION.....................................................................................................................12
2.4 VISUALDSP++.............................................................................................................................12
2.5 INSTALLATION PROCEDURES........................................................................................................13
2.5.1 Installing the EZ-KIT Lite Hardware ..................................................................................13
2.5.2 Installing VisualDSP++......................................................................................................13
2.5.3 Installing the VisualDSP++ EZ-KIT Lite License...............................................................15
2.5.4 Default Settings ...................................................................................................................15
3 USING EZ-KIT LITE SOFTWARE ...............................................................................................17
3.1 OVERVIEW ...................................................................................................................................17
3.2 STANDARD OPERATION ................................................................................................................17
3.2.1 I/O Devices ..........................................................................................................................17
3.2.2 POST Routines.....................................................................................................................20
3.2.3 Monitor Program Operation ...............................................................................................22
3.2.4 AD1819 Transmissions........................................................................................................23
3.3 RUNNING YOUR OWN PROGRAMS................................................................................................24
3.3.1 ADSP-21065L Memory Map ...............................................................................................24
3.3.2 Using the AD1819A SoundPort Codec as the Analog Front End .......................................27
3.3.3 Method 1: Using the Monitor’s Codec DMA Buffers and Interrupt Handler .....................27
3.3.4 DSP Programming of the AD1819 Indexed Control Registers ...........................................32
3.3.5 EMAFE Programming.........................................................................................................32
4 DEMONSTRATION PROGRAMS.................................................................................................33
4.1 OVERVIEW ...................................................................................................................................33
4.2 STARTING THE VISUALDSP++ DEBUGGER ..................................................................................33
4.3 DEBUGGER OPERATION WITH THE ADSP-21065L EZ-KIT LITE .................................................34
4.3.1 Loading Programs...............................................................................................................34
4.3.2 Registers and Memory.........................................................................................................35
4.3.3 Setting Breakpoints and Stepping........................................................................................35
4.3.4 Resetting the EZ-KIT Lite Board .........................................................................................36
4.4 BENCHMARKING UTILITIES ..........................................................................................................36
4.5 DEMONSTRATION PROGRAMS ......................................................................................................38
4.5.1 FFT.dxe ...............................................................................................................................38
4.5.2 BP.dxe..................................................................................................................................38
4.5.3 Pluck.dxe .............................................................................................................................38
4.5.4 Gunn.dxe..............................................................................................................................38
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4.5.5 Primes.dxe ...........................................................................................................................39
4.5.6 Tt.dxe ...................................................................................................................................39
4.5.7 Blink.dxe ..............................................................................................................................39
5 WORKING WITH EZ-KIT LITE HARDWARE..........................................................................40
5.1 OVERVIEW ...................................................................................................................................40
5.2 SYSTEM ARCHITECTURE...............................................................................................................40
5.3 BOARD LAYOUT ...........................................................................................................................41
5.3.1 Boot EPROM .......................................................................................................................41
5.3.2 User Push-Button Switches .................................................................................................42
5.3.3 User LED’s..........................................................................................................................42
5.4 POWER SUPPLIES ..........................................................................................................................42
5.4.1 Power Connector.................................................................................................................43
5.4.2 European Power Supply Specifications...............................................................................43
5.4.3 AD1819 Connections...........................................................................................................44
5.4.4 Expansion Port Connectors.................................................................................................44
5.4.5 EMAFE Interface Connector...............................................................................................44
5.4.6 JTAG Connector (Emulator Port) .......................................................................................44
5.5 JUMPERS.......................................................................................................................................45
5.5.1 Boot Mode Selection Jumper...............................................................................................45
5.5.2 EPROM Size Selection Jumpers ..........................................................................................46
5.5.3 Processor ID Jumpers .........................................................................................................46
5.6 EPROM OPERATION....................................................................................................................47
5.6.1 Designers Note ....................................................................................................................48
5.7 UART ..........................................................................................................................................48
5.7.1 Designers Note ....................................................................................................................48
5.8 EMAFE .......................................................................................................................................49
5.9 AD1819 .......................................................................................................................................49
5.10 S...................................................................................................................................................49
5.11 TIMING DIAGRAMS.......................................................................................................................50
6 EXPANSION CONNECTORS ........................................................................................................53
6.1 OVERVIEW ...................................................................................................................................53
6.2 EMAFE EXPANSION ....................................................................................................................54
6.2.1 EMAFE Connector Interface Signal Descriptions ..............................................................57
7 REFERENCE ....................................................................................................................................60
7.1 OVERVIEW ...................................................................................................................................60
7.2 SETTINGS MENU COMMANDS.......................................................................................................60
7.2.1 Test Communications ..........................................................................................................60
7.3 Baud Rate and COM Port ............................................................................................................60
7.2.2 Codec...................................................................................................................................62
7.3 DEMO MENU COMMANDS ............................................................................................................64
APPENDIX A RESTRICTIONS & CPLD CODE LISTING ...............................................................66
APPENDIX B BILL OF MATERIALS ..................................................................................................75
APPENDIX C SCHEMATICS.................................................................................................................81
INDEX.........................................................................................................................................................82
LIST OF TABLES
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TABLE 2-1 PC MINIMUM CONFIGURATION .................................................................................................12
TABLE 2-2 USER CONFIGURABLE EZ-KIT LITE SETTINGS .........................................................................15
TABLE 3-1 FLAG SUMMARY........................................................................................................................18
TABLE 3-2 INTERRUPTS USED BY THE MONITOR PROGRAM........................................................................19
TABLE 3-3 TABLE 3-3. POST ROUTINES ......................................................................................................20
TABLE 3-4 TABLE 3-4. POST ERROR CODES..............................................................................................20
TABLE 3-5 MEMORY MAP...........................................................................................................................25
TABLE 3-6 AVAILABLE MEMORY LOCATIONS ON THE EZ-KIT LITE ..........................................................26
TABLE 3-7 DSP PROGRAMMING OF THE AD1819 INDEXED CONTROL REGISTERS .....................................32
TABLE 5-1 POWER CONNECTOR ..................................................................................................................43
TABLE 5-2 EUROPEAN POWER SUPPLY SPECIFICATIONS .............................................................................43
TABLE 5-3 BOOT MODE SELECTION............................................................................................................45
TABLE 5-4 EPROM SIZE SELECTION..........................................................................................................46
TABLE 5-5 PROCESSOR SELECTION .............................................................................................................46
TABLE 5-6 LINE IN SELECTION ...................................................................................................................47
TABLE 5-7 AD1819 CODEC SELECTION......................................................................................................47
TABLE 5-8 SDRAM PIN CONNECTIONS.......................................................................................................50
TABLE 6-1 EXPANSION CONNECTORS .........................................................................................................53
TABLE 6-2 EVALUATION BOARD POWER CONNECTIONS.............................................................................55
TABLE 6-3 EMAFE CONNECTOR................................................................................................................56
TABLE 6-4 EMAFE CONNECTOR INTERFACE SIGNAL DESCRIPTION ROW A ..............................................57
TABLE 6-5 EMAFE CONNECTOR INTERFACE SIGNAL DESCRIPTION ROW B ..............................................58
TABLE 6-6 EMAFE CONNECTOR INTERFACE SIGNAL DESCRIPTION ROW C ..............................................59
TABLE 7-1 FFT DEMO DIALOG DESCRIPTION.............................................................................................64
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LIST OF FIGURES
FIGURE 2-1 COMPONENT SELECTION ...........................................................................................................14
FIGURE 3-1 ADSP-21065L EZ-KIT LITE MONITOR KERNEL CODEC TRANSFER SCHEME ..........................29
FIGURE 4-1 TARGET SELECTION DIALOG .....................................................................................................33
FIGURE 4-2 TARGET MESSAGE.....................................................................................................................34
FIGURE 4-3 TARGET COMMUNICATIONS STATUS MESSAGE BOX.................................................................34
FIGURE 5-1 EZ-KIT LITE SYSTEM BLOCK DIAGRAM ..................................................................................40
FIGURE 5-2 EZ-KIT LITE LAYOUT.............................................................................................................41
FIGURE 5-3 JTAG CONNECTOR WITH JUMPERS INSTALLED ........................................................................45
FIGURE 5-4 EPROM ADDRESS (256K X 8 EXAMPLE)..............................................................................48
FIGURE 5-5 EMAFE WRITE CYCLE TIMING PARAMETER DEFINITIONS.......................................................50
FIGURE 5-6 EMAFE WRITE CYCLE TIMING DIAGRAM................................................................................51
FIGURE 5-7 EMAFE READ CYCLE TIMING PARAMETER DEFINITIONS ........................................................51
FIGURE 5-8 EMAFE READ CYCLE TIMING DIAGRAM.............................................................................52
FIGURE 6-1 PHYSICAL LAYOUT OF ADSP-21065L DSP EVALUATION BOARD AND EMAFE DAUGHTER
BOARD..................................................................................................................................................55
FIGURE 7-1 SETTINGS MENU COMMANDS....................................................................................................60
FIGURE 7-2 SAMPLE RATE DIALOG..............................................................................................................63
FIGURE 7-3 SOURCE SETTING ......................................................................................................................63
FIGURE 7-4 FFT DEMO DIALOG...................................................................................................................64
FIGURE 7-5 BANDPASS DEMO CONTROLS DIALOG.......................................................................................65
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1 INTRODUCTION
Thank you for purchasing the ADSP-21065L EZ-KIT Liteevaluation kit. The evaluation board is
designed to be used in conjunction with VisualDSP++  development environment and is based on
the ADSP-21065L SHARC®floating-point digital signal processor (DSP). The kit is shipped with an
evaluation board and VisualDSP++ software. The VisualDSP++ that comes with the kit will only
operate with the evaluation board. The complete version must be purchased seperately. Using the
EZ-KIT Lite with VisualDSP++, you can observe the ADSP-21065L DSP execute programs from
on-chip RAM, interact with on-board devices, and communicate with other peripherals.
You can access the ADSP-21065L SHARC processor using the PC through a serial port or an
optional JTAG emulator. The monitor program that runs on the EZ-KIT Lite, gives you access to the
ADSP-21065L processor’s internal memory space through the serial port. In contrast, the JTAG
emulator allows the PC to perform in-circuit emulation through the processor’s JTAG interface.
The board’s features include:
• Analog Devices ADSP-21065L DSP running at 60MHz
• Analog Devices AD1819A 16-bit SoundPort®Codec
• RS-232 interface
• Socketed EPROM (128K x 8 on board, or 256K x 8, 512K x 8, and 1M x 8 selectable)
• SDRAM (1M x 32)
• Four push buttons for Flag inputs
• Three push buttons for IRQ inputs
• Six user programmable LEDs
• Power supply regulation
• EMAFE (Enhanced Modular Analog Front End) connector for expansion
• Expansion connectors
The EZ-KIT Lite board is equipped with hardware that facilitates interactive demonstrations. The
push button switches and user programmable LEDs provide user control and board status.
Additionally, the AD1819A SoundPort Codec provides access to an audio input (selectable as line
level or microphone) and an audio output (line level).
The EZ-KIT Lite includes a monitor program stored in non-votilitile memory. The monitor program
allows the user to download, execute and debug ADSP-21065L programs. By removing the socketed
EPROM, replacing it with an EPROM containing user code, the board can run as a stand-alone unit,
without the PC.
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The user can also connect a JTAG emulator to the EZ-KIT Lite. Through the JTAG emulator, you
can load programs, start and stop program execution, observe and alter registers and memory, and
perform other debugging operations. JTAG emulators are purchased seperately through Analog
Devices.
Additionally, the EZ-KIT Lite provides expansion connectors that let the user examine the processor
signals, as well as provide an interface for host control.
1.1 For More Information About Analog Devices, Inc. Products
Analog Devices is accessible on the Internet at www.analog.com. The DSP web page is directly
accessible at www.analog.com/dsp. This page provides access to DSP specific technical
information and documentation, product overviews, and product announcements.
1.2 For Technical or Customer Support
Y
Yo ou u c ca an n r re ea ac ch h o ou ur r C Cu us st to om me er r S Su up pp po or rt t g gr ro ou up p i in n t th he e f fo ol ll lo ow wi in ng g w wa ay ys s: :
• Email questions to [email protected]
• Contact your local Analog Devices sales office or an authorized Analog Devices distributor
1.3 Purpose of This Manual
The ADSP-21065L EZ-KIT Lite evaluation system manual gives directions for installing the
evaluation board and software on the PC. Also, the manual provides guidelines for running user
code on the ADSP-21065L.
1.4 Intended Audience
This manual is a user’s guide and reference to the ADSP-21065L EZ-KIT Lite evaluation board.
DSP programmers who are familiar with Analog Devices SHARC architecture, operation, and
programming are the primary audience for this manual.
DSP programmers who are unfamiliar with Analog Devices DSPs can use this manual, but
should supplement this manual with the ADSP-21065L User’s Manual, the ADSP-21065L
Technical Reference and the VisualDSP++ tools manuals.
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1.5 Manual Contents Description
This manual contains the following information:
• Chapter 1 — Introduction
Provides manual information and Analog Devices contact information.
• Chapter 2 — Getting Started
Provides software and hardware installation procedures, PC system requirements, and basic
board information.
• Chapter 3 — Using EZ-KIT Lite Software
Provides information on the EZ-KIT Lite system from a software perspective, and details the
monitor program, EMAFE, and codec.
• Chapter 4 — Demonstration Programs
Provides information on VisualDSP++ debugger operation with the ADSP-21065L EZ-KIT
Lite, benchmarking utilities, and demonstration programs.
• Chapter 5 — Working With EZ-KIT Lite Hardware
Provides information on the Hardware aspects of the evaluation system.
• Chapter 6 — Expansion Connectors
Provides information on EMAFE expansion and descriptions of connector interface signals.
• Chapter 7 — Reference
Provides information on settings menu commands and demo menu commands.
• Appendix A — Restrictions & CPLD Code Listing
Provides information on board restrictions you may encounter when using your EZ-KIT
Lite, and the files used on the programmable device(s) on the EZ-KIT Lite board.
• Appendix B — Bill of Materials
Provides a list of components used in the manufacture of the EZ-KIT Lite board.
 Appendix C — Schematics
Provides a resource to allow EZ-KIT Lite board level debugging or to use as a reference
design.
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1.6 Documents and Related Products
For more information on the ADSP-21065L and the components of the EZ-KIT Lite system, see
the following documents:
• ADSP-21065L SHARC User's Manual & Technical Reference
• ADSP-21065L
• AC’97 SoundPort®
The ADSP-2106x family of processors is supported by a complete set of evaluation tools.
Software tools include a C compiler, assembler, runtime libraries and librarian, linker, simulator,
and PROM splitter. See the following documents:
• VisualDSP++ Getting Started Guide
• VisualDSP++ User's Guide for the ADSP-21xxx Family DSPs
• Assembler Manual for the ADSP-21xxx Family DSPs
• C/C++ Compiler & Library Manual for the ADSP-21xxx Family DSPs
• Linker & Utilities for the ADSP-21xxx Family DSPs
• Product Bulletin for VisualDSP++ and the ADSP-21xxx Family DSPs
If you plan to use the EZ-KIT Lite in conjunction with the JTAG emulator, refer to the
documentation that accompanies the emulator.
Your software installation kit includes on-line help as part of the Windows interface. These help
files provide information about the ADSP-21065L evaluation board and accompanying tools.
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2 GETTING STARTED
2.1 Overview
This chapter provides information to install the software and the ADSP-21065L evaluation
board. It is important that installation of the software and hardware are in the order presented for
correct operation. This chapter also provides basic board information and conatins the following
sections:
• Contents of your EZ-KIT Lite package
• PC configuration
• Installation procedures
2.2 Contents of Your EZ-KIT Lite Package
The EZ-KIT Lite 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.
Unused EZ-KIT Lites should be stored in the protective shipping package.
The ADSP-21065L EZ-KIT Lite evaluation board package should contain the following items.
If any item is missing, contact the vendor where you purchased your EZ-KIT Lite or Analog
Devices.
• ADSP-21065L EZ-KIT Lite board
• Power cable with DC power supply (7.5 Volts)
• RS-232 serial port 9-pin cable
• EZ-KIT Lite CD containing examples, target .dll files, help files, and utilities
• VisualDSP++ CD
• Registration card - please fill out and return
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2.3 PC Configuration
For correct operation of the VisualDSP++ software and EZ-KIT Lite demos, all computers must
have the minimum configuration shown below.
Table 2-1 PC Minimum Configuration
Windows 98, 2000, XP Windows NT
Windows 98, Windows 2000, or Windows XP Windows NT, release 4.0, Service Pack 3 or later
Pentium processor 166 MHz or faster Pentium processor 166 MHz or faster
VGA Monitor and color video card VGA Monitor and color video card
2-button mouse 2-button mouse
100 MB available space 100 MB available space
32 MB RAM 32 MB RAM
CD-ROM CD-ROM
2.4 VisualDSP++
The ADSP-21065L EZ-KIT Lite system is shipped with the VisualDSP++ Integrated
Development Environment (IDE), debugger and code generation tools. VisualDSP++ is limited
in functionality by the EZ-KIT Lite serial number that is shipped with this product. The EZ-KIT
Lite serial number restricts the VisualDSP++ debugger to only connect to the ADSP-21065L EZ-
KIT Lite evaluation board running the debug monitor via the serial port (no emulator or
simulator support). Additionally, the linker will restrict the user to only 25% (2.5k words) of the
ADSP-21065L’s on-chip program memory space. If the full VisualDSP++ software suite is
purchased, the user will obtain a new serial number from Analog Devices that will lift the
restrictions mentioned above. The basic components that are shipped with VisualDSP++ are:
• Integrated Development Environment (IDE) — graphical interface for project management,
allowing the user to set project options, access the code generation tools, and launch the
debugger.
• Debugger — allows the user to view the insides of the DSP and perform debug operations
such as read/write memory, read/write registers, load programs, run, step, halt, and more.
• SHARC Family Code Generation Tools — C compiler, assembler, runtime libraries and
librarian, linker, simulator, and PROM splitter.
• Example Projects — Both VisualDSP++ and the ADSP-21065L EZ-KIT Lite are shipped
with example projects and C and Assembly source code that demonstrate various features of
the tools and ADSP-21065L DSP.
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2.5 Installation Procedures
The following procedures are provided for the safe and effective use of the ADSP-21065L
evaluation board. It is important that you follow these instructions in the order presented to
ensure correct operation of your software and hardware.
2.5.1 Installing the EZ-KIT Lite Hardware
The ADSP-21065L EZ-KIT Lite board is designed to run outside the PC as a stand alone
unit. There is no need to remove the chassis from your computer. Use the following steps to
connect the EZ-KIT Lite board:
1. Remove the EZ-KIT Lite board from the package—be careful when handling these
boards to avoid the discharge of static electricity, which may damage some components.
2. Connect the RS-232 cable to an available Comm Port on the PC and to J3 on the
ADSP-21065L evaluation board.
3. Plug the provided cord into a 120-Volt AC receptacle and plug the connector at the
other end of the cable into J1 (Power In) on the evaluation board.
All of the LEDs light up briefly. The FLAG9 and power (red) LED remain on. If the LEDs
do not light up, check the power connections.
To configure your board to take advantage of the audio capabilities of the demos, use the
following procedure:
1. Plug a set of self-powered computer speakers into jack J7(Line Out) on the board.
Turn on the speakers and set the volume to an adequate level.
2. Connect the line out of an electronic audio device to jack J8 (MIC/Line In) on the
board. Set jumpers JP1 and JP2 to LINE.
3. Set Jumper JP3 to GND to enable the AD1819 codec. (This is the board default)
This completes the hardware installation.
2.5.2 Installing VisualDSP++
This EZ-KIT Lite comes with the latest evaluation version of VisualDSP++ for SHARC
Family DSPs. You must install this software prior to installing the EZ-KIT Lite software.
Insert the VisualDSP++ CD into the CD-ROM drive. This will bring up the CD browser.
Click on the “Install VisualDSP++” option. This will launch the setup wizard. When
prompted, by the component selection dialog of the installation wizard, insure that the
21065L EZ-Kit Light check box is checked. Follow this wizard with the on-screen
instructions.
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Figure 2-1 Component Selection
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2.5.3 Installing the VisualDSP++ EZ-KIT Lite License
Before the VisualDSP++ software can be used, the license must be installed. To install the
EZ-KIT Lite license, follow these steps:
1. Make sure VisualDSP++ has been installed first.
2. Insert the VisualDSP++ CD into the CD-ROM drive if it is not already
in the drive.
3. Once the CD browser is on the screen select the "Install License"
option.
4. Now follow the setup wizard instructions. (Note: Make sure that you
have the proper serial number located on the back of the CD holder.)
2.5.4 Default Settings
After you have installed the board and utility software, your PC and EZ-KIT Lite have
the default settings shown in Table 2-2. You can change these settings through the
Settings menu in the debugger.
Table 2-2 User Configurable EZ-KIT Lite Settings
Selection Default Setting
Comm Port Comm 1
Baud Rate 115200
Codec Sample Rate 48000 Hz
Codec Source Microphone
Codec Gain 0.0
2.5.4.1 On-Line Help
The VisualDSP++ Debugger comes with a complete on-line help file and Adobe .pdf
files of all manuals.
•You can use the context help button to get help on any command or icon
or
•Highlight a command and press F1.
For help on commands and dialogs click from the toolbar Help -> Help Topics to get to
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the Debugger Help help file.
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3 USING EZ-KIT LITE SOFTWARE
3.1 Overview
The combination of the EZ-KIT Lite board and the monitor software operate as a target for the
VisualDSP++ debugger. The debugger allows viewing of the processor registers and memory,
perform several debugging activities, such as: setting breakpoints, stepping through code, and
plotting a range of memory.
If VisualDSP++ is not installed, please install it from the VisualDSP++ CD that came with this
product. For more information, refer to Chapter 2, section “VisualDSP++”.
This chapter provides monitor level software information on how the EZ-KIT Lite board operates
with the installed software. This chapter also provides information that helps the user run his/her
own programs on the ADSP-21065L EZ-KIT Lite board. This information appears in the
following sections:
• “Standard Operation”
Describes the operation of the EZ-KIT Lite board, from Power On self Test (POST)
routines to the AD1819 codec’s operation.
• “Running Your Own Programs”
Provides information about writing and running your own DSP executables that link with
the monitor program to run on the EZ-KIT Lite board.
3.2 Standard Operation
This section covers the standard operation of the EZ-KIT Lite board. It describes the I/O
capabilities of the on-board components, board power-up, and the on-board Monitor program.
3.2.1 I/O Devices
3.2.1.1 Flags
The ADSP-21065L has 12 asynchronous FLAG I/O pins that let you interact with the
running program. All flags are configured as inputs on reset of the DSP. For more
information on the Flag pins, see Chapter 12, “System Design, Flag Pins” in the ADSP-
21065L SHARC User’s Manual. The flags and their uses, are as follows:
• FLAG0-3 are connected to the push buttons on the EZ-KIT Lite board and are for
user input. For instance, the user can tell the program to poll for a flag and
when it occurs, do some other operation such as jump to another instruction.
The push button flags are set as inputs through the MODE2 register. Once
configured, they may be read through the ASTAT register.
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• FLAG4-9 connect to the LEDs and supply feedback for program execution. For
example the user can write code to trigger a flag (and the corresponding LED)
when a routine is complete the LED will light. The LED flags are configured
through the IOCTL register and are set/read through the IOSTAT register.
• FLAG10 is available to the EMAFE interface and is used for signaling. The
EMAFE flag is configured through the IOCTL register and is set/read through
the IOSTAT register.
• FLAG11 is reserved for the monitor to determine if the AD1819 codec is
enabled. When using the monitor program supplied with the EZ-KIT Lite
board, do not use or alter this flag pin.
Table 3-1 Flag Summary
Flag Use
Flag0-3 Push-button Input
(SW3, SW5, SW7, SW8)
Flag4-9 LED Feedback
Flag10 EMAFE Flag
Flag11 Reserved for monitor
3.2.1.2 Interrupts
Each of the three external interrupts, IRQ0-2, of the ADSP-21065L are directly accessible
through push button switches SW2, SW4, and SW6 on the EZ-KIT Lite board. IRQ0-1
are “wire-Or’ed”; IRQ0is used to implement interrupt driven serial routines with the
UART and IRQ1is provided for use with an EMAFE board and can be set to read and
write registers.
The external interrupts are controlled through the MODE1, MODE2, and IMASK regis-
ters and are configured in one of two ways: by modifying the vector table or through
instructions in user code. The MODE2 register also controls the interrupt sensitivity
between level and edge. To prevent an interrupt from being masked, write to the
particular interrupt in the IMASK register.
The monitor program running on the ADSP-21065L uses three interrupts; IRQ0, SPT1I
and SFT3, for normal operation. These interrupt vectors are provided in the
“demorth.asm” file that comes with the EZ-KIT Lite.
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When writing code, these interrupts (and their corresponding vectors) should not be
altered. If these vectors are overwritten, the kernel may not work as shown in Table 3-1.
For more information on the registers that control interrupts, and a complete list of inter-
rupt vector addresses, see Appendix E and F in the ADSP-21065L SHARC Technical
Reference.
Table 3-2 Interrupts Used by the Monitor Program
Interrupt Description Lost Functionality if Overwritten
IRQ0 Multiplexed from the UART through
an open collector device
Debugger’s ability to interrupt
running code
SFT3 Used to signal the monitor to send
data back to the Host
Ability to send messages from
user code to the debugger
SPT1 AD1819 Transmit Interrupt
Monitor’s ability to control the
AD1819
SPR1 AD1819 Receive Interrupt
The following rules and restrictions should be followed when using interrupts:
• You cannot step into an interrupt.
• Interrupts are disabled when the user program is halted.
• The board cannot communicate with the host if an interrupt higher than IRQ0 is
used.
• The board cannot communicate with the host if interrupt nesting is disabled.
• If the user does not require the supplied monitor program, IRQ0 with SW2 can be
configured by the user. In the initialization code of the user’s program, the interrupt
vector for IRQ0 must be replaced. This removes all monitor functionality.
• If the user does not connect an EMAFE to the EZ-KIT Lite, IRQ1 with SW4 can be
configured for other purposes. If an EMAFE card is attached and it uses IRQ1, there
is no way to disable the EMAFE's control of the interrupt line. If the EMAFE is not
attached, IRQ1 is available for other uses. Note: the monitor program does not
interact with the EMAFE board, and does not have any response to an IRQ1 request.
3.2.1.3 Serial Ports
The ADSP-21065L features two synchronous Serial Ports (SPORT0 and SPORT1). The
SPORTs can operate at up to 1x clock frequency, providing each with a maximum data
rate of 30 Mbit/sec. Each SPORT has a primary and a secondary set of transmit and
receive channels. SPORT data can be automatically transferred to and from on-chip
memory using DMA.
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Each of the SPORTs supports three operation modes: DSP SPORT mode, I2S mode (an
interface commonly used by audio codecs) and TDM (Time Division Multiplex)
multichannel mode. For additional information on the serial ports please refer to Chapter
9 of the ADSP-21065L SHARC User’s Manual.
Both of the synchronous serial ports are connected to the EMAFE interface. SPORT1 is
also connected to the on-board AD1819. Jumper JP3 is used to disable the AD1819, so it
doesn’t interfere with the EMAFE. For normal operation of the AD1819, JP3 must be
connected to GND. If the EMAFE is using SPORT1, the serial communication to the
AD1819A should be disabled by connecting JP3 to +3.3VCC.
3.2.2 POST Routines
POST (Power On Self Test) routines are a series of standard tests and initializations that the
EZ-KIT Lite performs on a power-on reset. To perform a power-on reset, disconnect power
to the board for at least three seconds and then reconnect power. The board automatically
resets (note that all the LED’s light up briefly). The user may also reset the board during
operation through the Debug -> Reset command from the debugger menu bar. Both types
of reset cause the DSP to reset to a known state and is followed by a message box that
displays the message “Communications Success”. At this point the user should reload any
programs he/she was working on. Table 3-3 shows the types of resets and their functions.
Table 3-3 Table 3-3. Post Routines
Routine Power-on Reset Reset During Operation
EPROM Check Yes No
Internal Memory Check Yes No
External Memory Check Yes No
UART Check Yes No
AD1819 Check Yes No
Initializations Yes Yes
Error codes are transmitted to the PC and are displayed on the LEDs. If the LED remains
lit after reset, then the error has been caused by the component shown in Table 3-4
Table 3-4 Table 3-4. POST Error Codes
Flag LED Error
4 EPROM
5 UART
6 AD1819
7 Memory
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