ADLINK Technology NuDAQ ACL-8454 Manuel utilisateur
NuDAQ
ACL-8454
MultiFunctions
Counter / Timer Card
User’s Guide
@Copyright 1997~2000 ADLINK Technology Inc.
All Rights Reserved.
Manual Rev. 1.22: April 15, 2000
The information in this document is subject to change without
prior notice in order to improve reliability, design and function and
does not represent a commitment on the part of the manu-
facturer.
In no event will the manufacturer be liable for direct, indirect,
special, incidental, or consequential damages arising out of the
use or inability to use the product or documentation, even if ad-
vised of the possibility of such damages.
This document contains proprietary information protected by
copyright. All rights are reserved. No part of this manual may be
reproduced by any mechanical, electronic, or other means in any
form without prior written permission of the manufacturer.
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NuDAQis registered trademarks of ADLINKTechnology Inc.
Other product names mentioned herein are used for identification
purposes only and may be trademarks and/or registered
trademarks of their respective companies.
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Tech Inc. If you need any help or service, please contact us and get it.
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Contents
•
i
Contents
Contents......................................................................i
How to Use This Guide.............................................iii
Chapter 1 Introduction .............................................1
1.1 Features..............................................................................3
1.2 Applications........................................................................3
1.3 Specifications.....................................................................4
Chapter 2 Installation...............................................5
2.1 What You Have ...................................................................5
2.2 Unpacking...........................................................................5
2.3 PCB Layout of ACL-8454 .....................................................6
2.4 Default Configurations........................................................7
2.5 Base Address Setting..........................................................8
2.6 Pin Assignment of Connector............................................10
2.7 Clock System....................................................................11
2.8 Counters Architecture .......................................................12
2.9 Clock Source Configurations............................................17
2.10 Gate Control Configurations.............................................19
2.11 Counter Outputs................................................................20
2.12 DuaI Interrupt System.......................................................21
2.13 Digital Input and Output....................................................23
2.14 Summary of Default Setting..............................................24
2.15 Notes for Installing More 8254 Chips.................................24
2.16 Daughter Board Connection .............................................25
Chapter 3 Registers Format...................................26
3.1 I/O Port Address................................................................26
3.2 Timer/Counter Registers...................................................27
3.3 Chip Select Register.........................................................27
ii
•
Contents
3.4 Digital Input Registers.......................................................28
3.5 Digital Output Register......................................................28
3.6 Low-level Programming...................................................30
Chapter 4 Applications...........................................32
4.1 Timer / Counter Connection..............................................32
4.2 Frequency Generator........................................................33
4.3 Pulse Width Measurement................................................35
4.4 Frequency Measurement..................................................36
4.5 Event Counter...................................................................38
Chapter 5 C/C++ Library..........................................39
5.1 Installation........................................................................40
5.2 W_8454_Initial...................................................................42
5.3 Set_Chip...........................................................................43
5.4 W_8454_Write_Counter.....................................................44
5.5 W_8454_Read_Counter.....................................................45
5.6 W_8454_Stop_Counter......................................................45
5.7 W_8454_DO.......................................................................46
5.8 W_8454_DI ........................................................................47
5.9 8454 Mode Functions........................................................49
5.10 W_8454_INT_Enable..........................................................50
5.11 W_8454_INT_Disable.........................................................51
Appendix 8254 Timer Chip Operation.....................52
Product Warranty / Service......................................55
How to Use This Guide
•
iii
How to Use This Guide
This manual is designed to help you use the ACL-8454. The manual
describes how to modify various settings on the ACL-8454 card to
meet your requirements. It is divided into 5 chapters:
•Chapter 1, "Introduction," gives an overview of the product features,
applications, and specifications.
•Chapter 2, "Installation & Configurations" describes the operation
method and multi-functions of the ACL-8454. Users should read
through this chapter to understand the configurations of the ACL-
8454. The chapter will also teach user how to install the ACL-
8454.
•Chapter 3, "Registers Format," describes the details of register
format of the ACL-8454, this information is very useful for the
programmers who want to control the hardware by low level
programming.
•Chapter 4, "Signal Connection & Applications," describes the
connectors' pin assignment and how to connect the outside signal
and devices to / from the ACL-8454. Some applications also be
introduced.
•Chapter 5, "C/C++ Library" introduces the C-language library for
operating the ACL-8454. Some examples are shown too.
Ce manuel convient aux modèles suivants
2
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