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:+1-814-234-8087

FAX: +1-814-234-5218

E-mail

[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

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

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

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