Apex Digital Tracer Manuel utilisateur
TRACER Reference Manual
RUGGEDIZED COTs PC/104 High Drive 48-line DIO and counter-timer module
Apex Embedded Systems LLC
116 Owen Road
Monona, WI 53716
Phone 608.256.0767
www.apexembeddedsystems.com
Copyright Notice
Copyright © 2003-2018 by Apex Embedded Systems LLC. All rights reserved.
Table of Contents
Welcome 1
Legal Notice 2
Benefits and Features 3
Exective Summary 3
Photo 4
Tracer Block Diagram 5
Errata 6
ESD Caution 7
PC/104 Insertion Caution 8
Hardware Configuration 9
Base Address and Configuration 9
Base Address Table 10
Register Set 12
Summary 12
8255 Device #1 Registers 12
Digital I/O Connector J12, 8255 #1 14
External IRQ Source 0 (IRQ_IN0) J5 15
8255 Device #2 Registers 15
Digital I/O Connector J9, 8255 #2 17
External IRQ Source 1 (IRQ_IN1) J7 18
8254 Counter/Timer Registers 18
Counter/Timer Setup Registers 19
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Counter/Timer I/O Connector J13 21
General Configuration Register 22
Connector Summary 24
Specification 28
TRACER-DIO-3.3VIO 29
TRACER-DIO-5VIO 29
Valid Part Numbers 30
Revision Information 31
Application Notes 32
Quadrature Decoder 32
Limited Warranty 33
Index a
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Tracer Reference Manual
1Welcome
Dear Valued Customer:
Thank you for your interest in our products and services.
Apex Embedded Systems "Continuous improvement" policy utilizes customer feedback to improve existing products and create
new product offerings based on needs of our customers.
Continued Success,
Apex Embedded Systems LLC
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2Legal Notice
Apex Embedded Systems’ sole obligation for products that prove to be defective within 1 year from date of purchase will be for
replacement or refund. Apex Embedded Systems gives no warranty, either expressed or implied, and specifically disclaims all
other warranties, including warranties for merchantability and fitness. In no event shall Apex Embedded Systems’ liability exceed
the buyer's purchase price, nor shall Apex Embedded Systems be liable for any indirect or consequential damages.
This warranty does not apply to products which have been subject to misuse (including static discharge), neglect, accident or
modification, or which have been soldered or altered during assembly and are not capable of being tested.
DO NOT USE PRODUCTS SOLD BY APEX EMBEDDED SYSTEMS AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS!
Products sold by Apex Embedded Systems are not authorized for use as critical components in life support devices or systems.
A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to
cause the failure of the life support device or system, or to affect its safety or effectiveness.
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3Benefits and Features
3.1 Exective Summary
What is the Tracer? The Tracer is a standard digital I/O card utilizing 8255 style software interfacing. In addition, an 8254
counter/timer function is available for general use.
Description
What are the Benefits of using the Tracer? The Tracer has the following benefits:
• Digital I/O connectors organized to allow direct interfacing to OPTO-22’s isolated I/O racks including the G4 series, the
PB16-H, PB16-J, PB16-K, PB16-L, PB8H and the PB24HQ. All that is required is a 50-pin ribbon cable from the Tracer to any
of the OPTO-22 racks.
• High current capacity sinking 32mA on each digital output
• Broad selection of interrupt sources and software configurable.
• On-board LED to indicate general status and useful for system debugging. A wide variety of signals can be routed to the LED
via software selection.
• 8254 Counter/Timer operation to 40 MHz
• Counter/Timer can be easily configured to support quadrature encoder signals, see application note ( see page 32).
• Industrial temperature range from -40oCto +85oC
• No tantalum capacitors or electrolytic capacitors used in the design
3.2 Photo Tracer Reference Manual
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3.2 Photo
Tracer Reference Manual 3.3 Tracer Block Diagram
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3.3 Tracer Block Diagram
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4Errata
Addresses known board related issues and includes methods to work around the issues.
Description
none
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