User`s manual

User’s Manual
GSM35 5 RTD Finland Oy
Table of Contents
List of illustrations and tables ................................6
Chapter 1 Introduction ............................................7
Features .................................................................................................. 7
GSM cellular modem............................................................................... 7
16C550 compatible UART....................................................................... 8
I/O interfaces........................................................................................... 8
Mechanical description............................................................................ 8
Connector description ............................................................................. 8
What comes with your board?................................................................. 9
Using this manual.................................................................................... 9
When you need help ............................................................................... 9
Chapter 2 Board settings ......................................10
Factory configured jumper settings ....................................................... 11
Base address jumpers........................................................................... 12
Host interrupts....................................................................................... 14
Chapter 3 Board installation .................................15
Board installation................................................................................... 15
General purpose digital I/O connector .................................................. 16
SIM card holder..................................................................................... 17
Chapter 4 Hardware description...........................19
The GSM wireless modem module........................................................ 20
GSM antenna considerations................................................................ 20
SIM card reader .................................................................................... 21
UART serial port circuitry ...................................................................... 21
Digital I/O .............................................................................................. 22