GPS140 Datasheet, PDF (5/38 Pages) List of Unclassifed Manufacturers – GPS Positioning Module

TABLE OF CONTENTS
CHAPTER 1 - INTRODUCTION.........................................................................................8
Features .............................................................................................................................................................................................8
Some of the key features of the GPS140HR include:.......................................................................................................... 8
GPS receiver.....................................................................................................................................................................................8
16C550 compatible UART..............................................................................................................................................................9
I/O interfaces....................................................................................................................................................................................9
Mechanical description...................................................................................................................................................................9
Connector description.....................................................................................................................................................................9
What comes wi th your board..........................................................................................................................................................9
Using this manual ..........................................................................................................................................................................10
When you need help.......................................................................................................................................................................10
CHAPTER 2 - BOARD SETTINGS..................................................................................11
Factory-Configured Jumper Settings........................................................................................................................................12
Base address jumpers (Factory setting: 2E8h) ........................................................................................................................13
Host interrupt (Factory setting: IRQ5, G closed)...........................................................................................................15
GPS configuration (Factory setting: ROM disabled, NMEA)...........................................................................................16
CHAPTER 3 BOARD INSTALLATION ...........................................................................18
Board installation ..........................................................................................................................................................................18
General installation guidelines:............................................................................................................................................ 18
GPS receiver connector................................................................................................................................................................19
Utility I/O header connector J3...................................................................................................................................................21
CHAPTER 4 - HARDWARE DESCRIPTION.................................................................22
Antenna............................................................................................................................................................................................23
UART channel ................................................................................................................................................................................24
Pulse outputs ..................................................................................................................................................................................24
1 PPS output and LED........................................................................................................................................................... 24
10KHz output ......................................................................................................................................................................... 24
Fuses ....................................................................................................................................................................................... 25
CHAPTER 5 BOARD OPERATION AND PROGRAMMING.......................................26
Defining the Memory Map............................................................................................................................................................26
INTERRUPTS .................................................................................................................................................................................27
What is an interrupt? ............................................................................................................................................................ 27
Interrupt request lines........................................................................................................................................................... 27
8259 Programmable Interrupt Controller............................................................................................................................. 27
Interrupt Mask Register (IMR)............................................................................................................................................ 28
End-of-Interrupt (EOI) Command........................................................................................................................................ 28
What exactly happens when an interrupt occurs?........................................................................................................... 28
GPS140HR
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RTD Embedded Technologies, Inc.