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RTD PC/104 数据模块板DM6910HR Hardware Manual.pdf
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详细说明：RTD PC/104 数据模块板DM6910HR Hardware Manualpdf,RTD PC/104 数据模块板DM6910HR Hardware ManualDM6910
User/s Manual
RTD Embedded Technologies, INC.
103 Innovation blvd
State College. PA 16803-0906
Phone:+1-814-234-8087
FAX:+1-814-234-5218
F
-mal
sales(artd. com
techsupportrtd.com
http://www.rtd.com
Revision history
Rev. a
New manual naming method
Published by
RTD Embedded Technologies Inc
103 Innovation blvd
State College, PA 16803-0906
Copyright 1999, 2002, 2003 by RtD Embedded Technologies, Inc
All rights reserved
Printed inU.Sa
The rTD logo is a registered trademark of rTD Embedded Technologies. cpuModule and utility Module are trademarks
ofRTD Embedded Technologies. PhoenixPICO and PheonixPICO BIOS are trademarks of Phoenix Technologies Ltd. PS/
2. PC/XT. PC/AT and IbM are trademarks of International Business machines Inc. MS-DOS. Windows windows 95
Windows 98 and Windows nT are trademarks of microsoft Corp. PC/104 is a registered trademark of PC/104 Consortium
All other trademarks appearing in this document are the property of their respective owners
Table of contents
INTRODUCTION
Digital 1/o
8254 Timer/Counters
.i-3
What comes with your module
i-3
Module accessories
Using This manual...
·:.·+*······(
i-3
When You Need help
CHAPTER1一 MODULE SETTINGS…,1-1
Factory-Configured Switch and Jumper Settings
JPl, JP2- Interrupt Channel Select (Factory Setting: Jumper installed on G; IRQ Disabled)
JP3--8254 Clock and Gate Source Select(Factory Settings: See Figure 1-4)
IP5- Strobe Input Enable(Factory Setting: Disabled)
17
JP4-Interrupt Source Select(Factory Setting: OT2)
1-7
SW1-Base Address(Factory Setting: 300 hex(768 decimal))
1-8
JP6 through JPll, Pull-up/Pull-down resistors on Digital I/O Lines
CHAPTER 2- MODULE INSTALLATION
2-1
Module installation
2-3
External i/o Connections
2-3
C
ng the Digital I/O
2-4
Connecting the Timer/ Counter I/o
Connecting the External Interrupt
2-4
Running the 691odiag Diagnostics Program
CHAPTER 3- HARDWARE DESCRIPTION
。。自。自。;。非。D。b鲁自。。;·。。。。。。非鲁。·。鲁。。鲁看4非。·。自e自。。。自自非。鲁。
3-1
Digitall o
3-3
Timer/ Counters
CHAPTER4— LO MAPPING…
4-1
Defining the lo m
4-3
BA+0: Digital I/O Port O(Read/write)
BA+l: Digital I/O Port I(Read/write)
BA+2: Clear IRQ/Program Port 0/ Port 1 Direction/IRQ Source Registers(Read/Write)
4-4
BA+ 3: Read Digital I/O Status/Program Digital Mode(Read/Write)
4-5
BA+4: Digital I/O Port 2(Read/Write)
4-6
BA+5: Digital I/O Port3(Read/Wite)…...….
4-6
BA+6: Clear IRQ/Program Port 0/Port 1 Direction/IRQ Source Registers(Read/write)........4-6
BA+7: Read Digital 1/O Status/Program Digital Mode(read/write)
4-7
BA+8: Digital I/O Port 4(Read/write)..........
4-8
BA+9: Digital I/O Port 5(Read/Write)
4-8
BA+10: Clear IRQ/Program Port 0/Port 1 Direction/IRQ Source Registers(Read/Write)
4-8
BA+ll: Read Digital I/O Status/Program Digital Mode(read/write).
BA +12: 8254 Timer/ Counter 0(Read/Write)
4-10
BA+ 13: 8254 Timer/Counter 1( Read/write )..
4-10
BA+ 14: 8254 Timer/Counter 2(Read/ Write)
4-10
BA+15:8254 Timer/ Counter Control word( Write Only)……..….……4-10
BA+16: Clear IRQ/iRQ Enable(read/Write
4-10
BA+17: IRQ Status(Read Only)
BA +18: Reserved
4-11
BA+9: Reserved
.4-11
Programming the DM6910
4-12
Clearing and Setting Bits in a Port
4-12
CHAPTER5-DIGITAL IO.
Bit Programmable digital I/(
Digital Interrupts
Resetting the Digital Circuitry……13
Strobing Data into Ports 0/1, 2/3, and 4/5
5-3
CHAPTER 6-TIMER/COUNTERS
6-1
CHAPTER7— INTERRUPTS
7-1
JP4: Jumper Selectable Interrupts
.7-3
Digital Interrupts
Sampling Digital Lines for Change of State
7-3
Selecting the Interrupt Channel
7-3
Interrupt Sharing
·
7-3
Basic Programming For Interrupt Handling ............7-4
What Is an Interrupt'
Interrupt request Lines
8259 Programmable Interrupt Controller
74
Interrupt Mask Register(MR)……
74
End-of-Interrupt(Eo Command
74
What Exactly Happens When an Interrupt Occurs?
7
Using Interrupts in Your Programs
Writing an Interrupt Service Routine (ISr)
7-5
Saving the Startup Interrupt Mask Register(IMr)and Interrupt Vector
7-7
Restoring the Startup IMr and Interrupt Vector
卓··“““···““··
7-7
Common Interrupt mistakes........
7-7
APPENDIX A—DM6910 SPECIFICATIONS,…-1
APPENDIX B-CONNECTOR PIN ASSIGNMENTS
B-1
APPENDIX C- COMPONENT DATA SHEETS
APPENDIX D— WARRANTY
List of illustrations
1-1
Module Layout Showing Factory-Configured Settings
Interrupt Channel Select Jumpers, JPI and JP2
1-3
Pulling down the Interrupt request lines
8254 Clock and Gate Sources Jumpers, JP3
8254 Circuit Diagram
1-6
1-6
Strobe Input Enable Jumper, JP5
4··
17
1-7
Interrupt Source Select Jumper,JP4..…….….….….….….….…..…….….…1-7
1-8
Base address switch SW1
Port o Pull-up/Pull-down Resistor Connections, JP6
·*··
2-1
CN3 1O Connector pin assignments
DM6910 Block Diagram
∴.3-3
3-2
Timer/Counter Circuit block diagram
8254 Timer/Counter ci
Block di
6-3
7-1
Digital Interrupt Timing Diagram
7-3
lV
INTRODUCTION
2
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