Laptop User Manual

vii
Contents
CHAPTER 1 BOARD LEVEL HARDWARE DESCRIPTION
Introduction.............................................................................................................1-1
Overview...........................................................................................................1-1
Related Documentation ..................................................................................1-2
Requirements....................................................................................................1-5
Features .............................................................................................................1-5
Specifications....................................................................................................1-6
Manual Terminology.......................................................................................1-6
Block Diagram.........................................................................................................1-8
Functional Description...........................................................................................1-9
Front Panel Switches and Indicators.............................................................1-9
Data Bus Structure.........................................................................................1-10
MC68040 MPU ...............................................................................................1-10
Flash Memory and Download EPROM......................................................1-10
SRAM...............................................................................................................1-11
Onboard DRAM.............................................................................................1-12
Battery Backed Up RAM and Clock............................................................1-13
VMEbus Interface ..........................................................................................1-13
VME Subsystem Bus (VSB) Interface..........................................................1-13
I/O Interfaces.................................................................................................1-13
Serial Port Interface................................................................................1-13
MC68230 Parallel Interface/Timer.......................................................1-14
Parallel Port Interface.............................................................................1-15
Ethernet Interface....................................................................................1-15
SCSI Interface..........................................................................................1-16
SCSI Termination....................................................................................1-16
Local Resources..............................................................................................1-16
Programmable Tick Timers...................................................................1-17
Watchdog Timer.....................................................................................1-17
Software-Programmable Hardware Interrupts..................................1-17
Local Bus Timeout..................................................................................1-17
Connectors......................................................................................................1-17
Memory Maps .......................................................................................................1-18
Local Bus Memory Map................................................................................1-18
Normal Address Range.........................................................................1-18
VMEbus Memory Map..................................................................................1-22