rtd DM6210 User manual

DM6210
Users Manual
BDM-610010009
Rev. A
(Real Time Devices)
RTD Embedded Technologies Inc.
Accessing the Analog World®

DM6210
Users Manual
RTDEmbeddedTechnologies,INC.
103 Innovation Blvd.
StateCollege,PA16803-0906
Phone:[phone]
FAX: [phone]
E-mail
[email protected]
[email protected]
web site
http://www.rtd.com

Revision History
Rev. A New manual naming method
Published by:
RTD Embedded Technologies, Inc.
103 Innovation Blvd.
StateCollege,PA 16803-0906
Copyright1999,2002,2003byRTDEmbeddedTechnologies,Inc.
All rights reserved
PrintedinU.S.A.
The RTD Logo is a registered trademark of RTD Embedded Technologies. cpuModule and utilityModule are trademarks
of RTD 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
i
INTRODUCTION .................................................................................................................................... i-1
Analog-to-Digital Conversion..............................................................................................................................i-3
8254 Timer/Counter ..............................................................................................................................................i-3
Digital I/O...............................................................................................................................................................i-3
What Comes With Your Module ..........................................................................................................................i-3
Module Accessories ..............................................................................................................................................i-4
Hardware Accessories.......................................................................................................................................i-4
Optional Configurations .......................................................................................................................................i-4
Using This Manual ................................................................................................................................................i-4
When You Need Help............................................................................................................................................i-4
CHAPTER 1  MODULE SETTINGS ............................................................................................... 1-1
Factory-Configured Switch and Jumper Settings ..............................................................................................1-3
JP1  8254 Timer/Counter Clock Sources (Factory Settings: CLK0-OSC, CLK1-OT0, CLK2-OT1) ....1-4
P5  Analog Input Voltage Range (Factory Setting: 10V) ........................................................................1-5
P6  Analog Input Voltage Polarity (Factory Setting: BIP (Bipolar)) ......................................................1-5
S1  Base Address (Factory Setting: 300 hex (768 decimal)) ....................................................................1-6
JS3, JS4, JS5 and JS6, Pull-up/Pull-down Resistors on Digital I/O Lines .......................................................1-7
Gx, Resistor Configurable Gain ..........................................................................................................................1-8
CHAPTER 2  MODULE INSTALLATION ..................................................................................... 2-1
Module Installation ..............................................................................................................................................2-3
External I/O Connections.....................................................................................................................................2-4
Connecting the Analog Inputs ........................................................................................................................2-4
Connecting the Timer/Counters and Digital I/O............................................................................................2-4
Running the 6210DIAG Diagnostics Program ...................................................................................................2-4
CHAPTER 3  HARDWARE DESCRIPTION .................................................................................. 3-1
A/D Conversion Circuitry ....................................................................................................................................3-3
Analog Inputs ...................................................................................................................................................3-3
A/D Converter ..................................................................................................................................................3-3
Timer/Counters .....................................................................................................................................................3-4
Digital I/O..............................................................................................................................................................3-4
Interrupts ...............................................................................................................................................................3-4
CHAPTER 4  MODULE OPERATION AND PROGRAMMING ................................................. 4-1
Defining the I/O Map ...........................................................................................................................................4-3
BA + 0: Read A/D Data / Start Convert (Read/Write 16-bit) .......................................................................4-3
BA + 1: Reserved ............................................................................................................................................4-3
BA + 2: Read Board ID LSB (Read Only 8-bit) ............................................................................................4-3
BA + 3: Read Board ID MSB (Read Only 8-bit) ...........................................................................................4-3
BA + 4: Channel Select (Read/Write 8-bit) ..................................................................................................4-3
BA + 5: IRQ Select (Read/Write 8-bit) ..........................................................................................................4-4
BA + 6: Read Status / Clear IRQ (Read/Write 8-bit) ....................................................................................4-4
BA + 7: Reserved ............................................................................................................................................4-6
BA + 8: 8254 Timer/Counter 0 (Read/Write 8-bit) ......................................................................................4-6
BA + 9: 8254 Timer/Counter 1 (Read/Write 8-bit) ......................................................................................4-6

ii
BA + 10: 8254 Timer/Counter 2 (Read/Write 8-bit) ....................................................................................4-6
BA + 11: 8254 Control Word (Write Only 8-bit) .........................................................................................4-6
BA + 12: Digital I/O Port 0 (Read/Write 8-bit) ............................................................................................4-7
BA + 13: Digital I/O Port 1 (Read/Write 8-bit) ............................................................................................4-7
BA + 14: Digital I/O Strobe Select (Read/Write 8-bit) ................................................................................4-7
BA + 15: Digital I/O Control (Read/Write 8-bit) ..........................................................................................4-8
Programming the DM6210 ..................................................................................................................................4-9
Clearing and Setting Bits in a Port ..................................................................................................................4-9
CHAPTER 5  A/D CONVERSIONS ................................................................................................. 5-1
Selecting a Channel..........................................................................................................................................5-3
Starting an A/D Conversion ............................................................................................................................5-3
Monitoring Conversion Status ........................................................................................................................5-3
Reading the Converted Data ...........................................................................................................................5-4
Channel Scanning ............................................................................................................................................5-5
CHAPTER 6  INTERRUPTS ............................................................................................................ 6-1
Software Selectable Interrupt Sources ...........................................................................................................6-3
Software Selectable Interrupt Channel ...........................................................................................................6-3
Basic Programming For Interrupt Handling ..................................................................................................6-4
What Is an Interrupt? ...................................................................................................................................6-4
Interrupt Request Lines ...............................................................................................................................6-4
8259 Programmable Interrupt Controller ..................................................................................................6-4
Interrupt Mask Register (IMR) ...................................................................................................................6-4
End-of-Interrupt (EOI) Command ..............................................................................................................6-5
What Exactly Happens When an Interrupt Occurs? .................................................................................6-5
Using Interrupts in Your Programs ............................................................................................................6-5
Writing an Interrupt Service Routine (ISR) ...............................................................................................6-5
Saving the Startup Interrupt Mask Register (IMR) and Interrupt Vector ...............................................6-6
Restoring the Startup IMR and Interrupt Vector .......................................................................................6-7
Common Interrupt Mistakes .......................................................................................................................6-7
CHAPTER 7  TIMER / COUNTERS ............................................................................................... 7-1
CHAPTER 8  DIGITAL I/O .............................................................................................................. 8-1
BA + 12: Digital I/O Port 0 (Read/Write 8-bit) .................................................................................................8-3
BA + 13: Digital I/O Port 1 (Read/Write 8-bit) .................................................................................................8-3
BA + 14: Digital I/O Strobe Select (Read/Write 8-bit).....................................................................................8-3
BA + 15: Digital I/O Control (Read/Write 8-bit) ..............................................................................................8-4
Strobing Data into Port 0 or Port 1 ......................................................................................................................8-4
CHAPTER 9  EXAMPLE PROGRAMS .......................................................................................... 9-1
C Programs ............................................................................................................................................................9-3
Quick Basic Programs ..........................................................................................................................................9-3
CHAPTER 10  CALIBRATION ...................................................................................................... 10-1
Required Equipment .......................................................................................................................................... 10-3
A/D Calibration .................................................................................................................................................. 10-4
Unipolar Calibration ..................................................................................................................................... 10-5
Bipolar Calibration........................................................................................................................................ 10-5

APPENDIX A  DM6210 SPECIFICATIONS ................................................................................... A-1
APPENDIX B  CN3 CONNECTOR PIN ASSIGNMENTS ............................................................ B-1
APPENDIX C  COMPONENT DATA SHEETS ............................................................................. C-1
APPENDIX D  WARRANTY ............................................................................................................ D-1

iii
List of Illustrations
1-1 Module Layout Showing Factory-Configured Settings .......................................................................1-3
1-2 8254 Timer/Counter Clock Source Jumpers, JP1 .................................................................................1-4
1-3 8254 Timer/Counter Circuit Block Diagram ........................................................................................1-4
1-4 Analog Input Voltage Range and Polarity, P5 and P6 .........................................................................1-5
1-5 Base Address Switch, S1 ........................................................................................................................1-6
1-6 Pull-up/Pull-down Resistors for the Digital I/O ...................................................................................1-7
1-7 Gain Circuitry and Formulas for Calculating Gx and f .......................................................................1-9
1-8 Diagram for Removal of Solder Short ...................................................................................................1-9
2-1 CN3 I/O Connector Pin Assignments ....................................................................................................2-4
2-2 Analog Input Connections ..................................................................................................................... 2-5
3-1 DM6210 Block Diagram ........................................................................................................................3-3
7-1 Uset TC Circuitry ....................................................................................................................................7-3
10-1 Module Layout ..................................................................................................................................... 10-3

i-1
INTRODUCTION

i-2