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VAISALA ________________________________________________________________________ 1
Table of Contents
CHAPTER 1
GENERAL INFORMATION............................................................................ 3
About This Manual ................................................................... 3
Contents of This Manual ....................................................... 3
Feedback............................................................................... 4
Safety......................................................................................... 4
General Safety Considerations ............................................. 4
ESD Protection...................................................................... 5
Recycling .................................................................................. 5
CHAPTER 2
PRODUCT OVERVIEW.................................................................................. 7
Introduction to MPU112 Main Processor Unit....................... 7
CHAPTER 3
FUNCTIONAL DESCRIPTION....................................................................... 9
PC Core module ....................................................................... 9
Flash Disk ............................................................................... 10
CHAPTER 4
SYSTEM LOGIC PLD................................................................................... 11
Programmable Logic Device (PLD) ...................................... 11
ISA Bus Interface ................................................................ 12
Address Decoders............................................................... 12
Serial Channels 3 and 4...................................................... 13
Interrupt Line Selectors ....................................................... 13
ARCNET Filter .................................................................... 13
Data Output Registers......................................................... 13
Device Registers and Slot/Rack Codes .............................. 13
CHAPTER 5
EXTERNAL COMMUNICATION INTERFACES.......................................... 15
Ethernet Controller................................................................. 15
Ethernet Switch ...................................................................... 16
ARCNET Line Interface.......................................................... 17
Serial Channels ...................................................................... 18
CHAPTER 6
SUPPORT LOGIC ........................................................................................ 19
Reset Circuit ........................................................................... 19