BlueChip AOP-12D Bedienungsanleitung
AOP-12D
Multi-Function
Analogue Output Card
User Manual
AOP-12d
User Manual
Document Part N°0127-0146
Document Reference AOP-12d\..\0127-0146.doc
Document Issue Level 2.0
Manual covers PCBs identified KFA12o Rev. B
All rights reserved. No part of this publication may be reproduced, stored in any retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopied, recorded or otherwise,
without the prior permission, in writing, from the publisher. For permission in the UK contact Blue Chip
Technology.
Information offered in this manual is correct at the time of printing. Blue Chip Technology accepts no
responsibility for any inaccuracies. This information is subject to change without notice.
All trademarks and registered names acknowledged.
Blue Chip Technology Ltd.
Chowley Oak, Tattenhall,
Chester, Cheshire, CH35 9EX.
Telephone : (01829) 772000 Facsimile : (01829) 772001.
Amendment History
Issue
Level Issue
Date Author Amendment Details
1.0 9/8/95 SH First approved issue, new front sheet.
2.0 20/12/95 EGW Addition of EMC information to Technical Section.
Errors corrected. References to current outputs
removed. Added layout diagram. Earlier part no.
was 127-038. Filename was ...\Userg.doc
Contents
Blue Chip Technology Ltd. 01270146.doc
OUTLINE DESCRIPTION 1
SPECIFICATION 2
Analogue Outputs 2
Digital Input/Outputs 3
Timers 4
Board Connectors 4
Electromagnetic Compatibility (EMC) 5
QUICK INSTALLATION 7
Base Address 7
Interrupts 7
DMA Settings 8
Fitting the Card 8
USING THE CARD 9
External Input/Output Connections 9
Analogue Connections 9
Analogue Voltage Outputs 10
Digital Connections 11
OPERATION OF THE CARD 12
Programmable Digital Input/Outputs 12
Control Codes 13
Timers 14
Timer Initialisation 16
DAC Section 17
Auto Channel Scanning 18
MAPS AND REGISTERS 19
Card Address Map 19
DAC Control Register 19
Channel Enable Registers 20
SAMPLE PROGRAM DESCRIPTIONS 22
QBASIC and C Examples 22
Contents
DETAILED CARD INSTALLATION 23
Base Address 23
Interrupts 25
DMA Settings 26
Card Layout Diagram 27
APPENDIX A - NUMBERING SYSTEMS 28
Binary and Hexadecimal Numbers 28
Base Address Selection 31
APPENDIX B - PC MAPS 32
PC XT/AT I/O Address Map 32
PC XT Interrupt Map 33
PC AT Interrupt Map 34
DMA Channels 34
APPENDIX C - USING DMA 35
The DMA Controller 35
The DMA Controller Registers 37
Addressing 40
DMA Limitations 41
Programming Example 42
Outline Description Page 1
Blue Chip Technology Ltd. 01270146.doc Page 1
OUTLINE DESCRIPTION
The AOP-12d is a PC-compatible short card which provides digital inputs and
outputs, and analogue outputs.
There are 24 TTL compatible programmable digital input/outputs available
externally. There are also three programmable timers. One of the timer outputs
is available externally to the user.
There are 12 analogue outputs available as ±10 Volts. Output resolution is
12 bits.
DMA data transfer is available on the analogue output channels.
Page 2Specification
Page 201270146.doc Blue Chip Technology Ltd.
SPECIFICATION
Analogue Outputs
Analogue Outputs 12 channels
Resolution 12 Bit Monotonic
Voltage Outputs ±10 Volts @ 10mA maximum one O/P,
or 5mA each from all O/Ps
Output Error Volts 0.5% of Span
Output Settling Time 3µS to ±1 LSB
Data Transfer I/O Port or DMA
DMA Channels Supported 1,2 and 3
Fastest DMA Transfer Rate 12µS per Transfer
Channel Selection Any or all channels may be selected to
be updated
DMA Transfer Initialisation Software Start Signal
Maximum Time Skew
Channel 1 To Channel 12 144µS
Between Channels 12µS
DMA Timing Source On-board Programmable Timer
Specification Page 3
Blue Chip Technology Ltd. 01270146.doc Page 3
Digital Input/Outputs
Number of Channels 24
Digital Inputs
High Level Input 2.2 Volts minimum
Current 10µA sink
Low Level Input 0.8 Volts maximum
Current 10µA source
Digital Outputs
Logic High Voltage 3.5 Volt minimum
Current 400µA source
Logic Low Voltage 0.4 Volt
Current 2.5mA sink
Page 4Specification
Page 401270146.doc Blue Chip Technology Ltd.
Timers
Number Of Timer Channels 3
Timer Usage
Timer 0 Pre-Scalar for timer 1
Timer 1 Timer for DMA transfer
Timer 2 Uncommitted (output available)
Timer 0
Resolution 1µS
Minimum Time 2µS
Maximum Time 130mS
Timer 1
Resolution timer 0 output value
Minimum Time 4µS
Maximum Time 2.3 hours
Timer 2
Resolution 1µS
Minimum Time 2µS
Maximum Time 130mS
Board Connectors
PC ISA 8-bit card
Analogue Signals 50 Way Male `D' Type
Digital Signals 50 Way IDC Male Box Header
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