RTD PC/104 数据模块板DM6916HR Hardware Manual.pdfRTD PC

文件名称: RTD PC/104 数据模块板DM6916HR Hardware Manual.pdf

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详细说明：RTD PC/104 数据模块板DM6916HR Hardware Manualpdf,RTD PC/104 数据模块板DM6916HR Hardware ManualDM6916 Users manual RTD Embedded Technologies. nc 103 Innovation blvd State College. Pa 16803-0906 Phone:+1-814-234-8087 FAⅩ:+1-814-234-5218 E-mail alesartd. com techsupport(artd. com web site http://www.rtd.com Revision history Rev. a New manual naming method ished by RTD Embedded Technologies, Inc 103 Innovation Blvd State College, PA 16803-0906 Copyright 1999, 2002, 2003 by RTDEmbedded Technologies, Inc Printed in u.s.a 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 Pulse Width Modulators(PWM 133 8254 Timer/Counters What Comes with your module i-3 Module accessories Using This manual ............. ····· ……….-3 When You need Help… CHAPTER1 MODULE SETTINGS………1-1 Factory-Configured Switch and Jumper settings 1,JP2— nterrupt Channel Select( Factory Setting;: Jumper installed on G; IRQ Disabled)………………1-4 JP3--8254 Clock and Gate Source Select(Factory Settings: See Figure 1-4) IP4- Interrupt Source Select(Factory Setting: OT2) 1-7 SW1- Base Address (Factory Setting: 300 hex(768 decimaL)) 1-8 CHAPTER 2 MODULE INSTALLATION .m..m..m...m.m.m. 2-1 Module installation External i/o connections 1· 2 Connecting the pwm and digital outputs Connecting the Timer/Counter I/O..….….….… 2-4 Connecting the External Interrupt 2-4 Running the 6916DIAG Diagnostics Program 2-5 ChAPTER 3- HARDWARE DESCRIPTION...m.m.m.m..3-1 Pulse width modulators Timer/ Counters 申申丰非 CHAPTER4—1 O MAPPING, ··命·································· 4-1 Defining the I/O Map......... 4-3 BA+O: Pulse Width Modulator 0. 0 Duty Cycle(Write only) 4-4 BA+1: Pulse Width Modulator 0. 1 Duty Cycle(Write only) 4-4 BA+ 2: Pulse Width Modulator 0.2 Duty Cycle(Write only)...... 4-4 BA+3: PWM Control and Digital Output Register (Write only) 4-4 BA+4: Pulse Width Modulator 1.0 Duty Cycle(Write only) BA+5: Pulse width Modulator 1. 1 Duty Cycle( Write only)...... 4-5 BA+6: Pulse Width Modulator 1. 2 Duty Cycle (write only).... 自d 4-5 BA+7: PWM Control and Digital Output Register(Write only) BA+8: Pulse Width Modulator 2.0 Duty Cycle(Write only)...... BA+9: Pulse Width Modulator 2. 1 Duty Cycle(Write only BA+10: Pulse Width Modulator 2.2 Duty Cycle(Write only) 4-6 BA+ll: PWM Control and Digital Output Register(Write only) .4-6 BA+ 12: 8254 Timer/ Counter 0 (Read/ Write) 4-7 BA+ 13: 8254 Timer/Counter 1(Read/Write) +++++++++ 4-7 BA+14: 8254 Timer/Counter 2(Read/Write) 4-7 BA+ 15: 8254 Timer/Counter Control word ( Write Only) .4-7 BA+ 16: Clear IRQ/RQ Enable(Read/Write) 4-7 BA+17: IRQ Status(Read Only) 4-8 BA+18: Reserved 4-8 BA +19: Reserved 4-8 Programming the dm6916 .4-9 Clearing and setting bits in a port...….… 4-9 CHAPTER5一 DIGITAL OUTPUTS.……...4...5-1 CHAPTER 6-TMMER/ CHAPTER T-INTERRUPTS 47-1 JP4: Jump able Interrupts Selecting the Interrupt Channel 7 interrup 7-3 Basic Programming For Interrupt Handling 7-4 What Is an Interrupt? 4 Interrupt Request Lines………….….….. 7-4 8259Pr able in 74 Interrupt Mask Register (IMR) 7-4 End-of-Interrupt(EOD Command What Exactly Happens When an Interrupt Occurs? 7-5 Using Interrupts in Your Programs........ Writing an Interrupt Service Routine (ISR) Saving the Startup Interrupt Mask Register(IMR) and Interrupt Vector………………..77 Restoring the startup imr and Interrupt Vector 7-7 Common Interrupt Mistakes …7-7 APPENDIX A- DM6916 SPECIFICATIONS....m.A-1 APPENDIXB- CONNECTOR PIN ASSIGNMENTS B-1 APPENDIX C- COMPONENT DATA SHEETS mm. C-1 APPENDIX D- WARRANTY D-1 List of lustrations odule Layout Showing Factory-Configured Settings........ 1-4 Interrupt Channel Select Jumper.JPl and JP2 8254 Clock and Gate Sources Jumpers,JP,.…… Pulling down the Interrupt request lines…… 1-4 8254 Circuit diagram 1-6 Interrupt Source Select Jumper. JP4 1-7 1-7 Base Address switch. 2-1 CN3 I/O Connector Pin assignments DM69 16 Block Diagram.................. Timer/Counter circuit block diagram 6-1 8254 Timer/ Counter Circuit Block Diagram.............................6-3 112 lV INTRODUCTION

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