National Instruments 320174B-01

Appendix C

AMD 8253 Data Sheet*

This appendix contains the manufacturer data sheet for the AMD 8253 System Timing

Controller integrated circuit (Advanced Micro Devices, Inc.). This circuit is used on the Lab-

NB.

Advanced Micro Devices, Inc. 1987 Data Book MOS Microprocessors and Peripherals.

Contents

Main Page Limited Warranty Copyright Trademarks Page Contents About This Manua l Chapter 1 Introductio n Chapter 2 Configuration and Installatio n Chapter 3 Theory Chapter 4 Register-Level Programmin g Page Page Figures Tables Page About This Manual Organization of This Manual Conventions Used in This Manual National Instruments Documentation Related Documentation Customer Communication Chapter 1 Introduction About the Lab-NB What You Need to Get Started Software Programming Choices LabVIEW and LabWindows/CVI Application Software NI-DAQ Driver Software Register-Level Programming Optional Equipment Cabling Unpacking Chapter 2 Configuration and Installation Board Configuration Page Factory Default Jumper Settings Analog Output Configuration Analog Input Configuration Installation Signal Connections I/O Connector Pin Description Configuration and Installation Chapter 2 Lab-NB User Manual 2-6 National Instruments Corporation Figure 2-6. Lab-NB I/O Connector Pin Assignments Signal Connection Descriptions Page Page Page Page Page The following signals are used in the timing diagrams shown later in this chapter: Page Page Page Page Page Page Page Page Page Page Configuration and Installation Chapter 2 Lab-NB User Manual 2-24 National Instruments Corporation National Instruments Corporation 3-1 Lab-NB User Manual Chapter 3 Theory of Operation Figure 3-1. Lab-NB Block Diagram Functional Overview The block diagram in Figure 3-1 shows a functional overview of the Lab-NB board. NuBus Interface Circuitry Chapter 3 Theory of Operation National Instruments Corporation 3-3 Lab-NB User Manual Analog Input and DAQ Circuitry Figure 3-3. Analog Input and DAQ Circuitry Block Diagram Analog Input Circuitry DAQ Timing Circuitry Page Page Analog Output Circuitry Page Digital I/O Circuitry Theory of Operation Chapter 3 Lab-NB User Manual 3-10 National Instruments Corporation Timing I/O Circuitry Figure 3-6. Timing I/O Circuitry Block Diagram Page Chapter 4 Register-Level Programming Register Access Slot Address Space Register Map Page Register Sizes Register Descriptions Register Description Format Analog Input Register Group Page Page Page Page Page Page Page Page Page Page 8253 Counter/Timer Register Groups Page Page Page Page Page Page Page Page 82C55A Digital I/O Register Group Page Page Page Page Page Page Page Page Page Configuration EPROM Programming Considerations Register Programming Considerations Initializing the Lab-NB Board Programming the Analog Input Circuitry Page Page Programming Multiple A/D Conversions on a Single Input Channel Page Page Page Page Page External Timing Considerations for Multiple A/D Conversions Programming Multiple A/D Conversions Using External Timing Page Page Page Page Programming Multiple A/D Conversions with Channel Scanning Interrupt Programming for the Analog Input Circuitry Programming the Analog Output Circuitry Page Interrupt Programming for the Analog Output Circuitry Programming the Digital I/O Circuitry Page Chapter 4 Register-Level Programming National Instruments Corporation 4-57 Lab-NB User Manual Figure 4-1. Control-Word Format with Control-Word Flag Set to 1 Figure 4-2. Control-Word Format with Control-Word Flag Set to 0 Page Page Page Page Page Page Page Interrupt Programming for the Digital I/O Circuitry Chapter 5 Calibration Calibration Equipment Requirements Calibration Trimpots Analog Input Calibration Board Configuration Bipolar Input Calibration Procedure Unipolar Input Calibration Procedure Analog Output Calibration Board Configuration Bipolar Output Calibration Procedure Unipolar Output Calibration Procedure Page Appendix A Specifications Analog Input Explanation of Analog Input Specifications Analog Data Acquisition Analog Output Explanation of Analog Output Specifications Digital I/O Timing I/O Power Requirements (from Macintosh NuBus) Page National Instruments Corporation B-1 Lab-NB User Manual Appendix B I/O Connector Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Appendix E Customer Communication Technical Support Form Lab-NB Hardware and Software Configuration Form National Instruments Products Other Products Documentation Comment Form Glossary Page Index Numbers/Symbols A Page B C D Page E F G I J L M N O P R Page S T U W