System Unit; Upa Interconnect; Figure C-6 Keyboard And Mouse, Diskette, And Parallel Port; C.1 System Unit - Sun Microsystems Ultra 60 Service Manual

C.1

System Unit

The system unit is an UltraSPARC port architecture (UPA)-based multiprocessor
machine that uses peripheral component interconnect (PCI) as the I/O bus.
The CPU modules, PSYCHO+ ASIC (UPA-to-PCI bridge), and UPA graphics cards
communicate with each other using the UPA protocol. The CPU modules and the
PSYCHO+ ASIC are UPA master-slave devices. The UPA graphics cards are UPA
slave-only devices.
The Marvin ASIC routes UPA requests packets through the UPA address bus and
controls the flow of data using the XB9+ ASIC. See
UPA Interconnect—page C-4
PCI Bus—page C-6
UltraSPARC II Processor—page C-8
Memory System—page C-9
Graphics and Imaging—page C-14
Peripherals—page C-15
Other RMA Storage Device X-Options—page C-19
Keyboard and Mouse, Diskette, and Parallel Port—page C-19
Serial Port—page C-22
Ethernet—page C-24
Audio Card and Connector—page C-28
SCSI—page C-30
ASICs—page C-33
SuperIO—page C-36
C-2 Sun Ultra 60 Service Manual • August 2001
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FIGURE C-1