CHAPTER 4
Functional Description
Introduction................................................................................................................4-1
Summary of Features .................................................................................................4-1
Processor and Memory .......................................................................................4-2
I/O Implementation.............................................................................................4-3
ASICs..................................................................................................................4-4
Block Diagram ...........................................................................................................4-4
Functional Description...............................................................................................4-4
Data Bus Structure ..............................................................................................4-6
Microprocessor ...................................................................................................4-6
MC68xx040 Cache ......................................................................................4-6
Memory Options .................................................................................................4-7
DRAM .........................................................................................................4-7
SRAM..........................................................................................................4-8
About the Battery.........................................................................................4-9
I/O Interfaces ....................................................................................................4-12
Ethernet Interface ......................................................................................4-16
SCSI Interface............................................................................................4-17
SCSI Termination ......................................................................................4-17
Local Resources................................................................................................4-17
Watchdog Timer ........................................................................................4-18
Local Bus Timeout ....................................................................................4-18
Local Bus Arbiter..............................................................................................4-19
Connectors ........................................................................................................4-19
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