Service manual

C-2 Sun Ultra 2 Series Service Manual • July 1996
FIGURE C-1 System Unit or Server Functional Block Diagram
144
UPA data bus
72
576
SBus
SCSI
TPE/
MII
Parallel
port
Line
in
out
Headphone
Mic.
in
APC
Slavio
ASIC
Serial
ports
Diskette drive
Keyboard
and
mouse
Flash
PROM
SBus
UltraSPARC
processor
ASIC
Data
Control
EBus
Data
(2)
P/O ADRSBUS1
SYSIO
ASIC
SBus
slot (4)
72
BMX/CBT
ASICs
64
UPA data bus
Control, address
DTAGs
FBC
ASIC
UPA graphics
Clock control
RISC
ASIC
FBRAM
RAMDAC
DSIMM
(16 max.)
FEPS
ASIC
NVRAM/TOD
ADRSBUS0
P/O ADRSBUS1
Processor data bus
SC_MP
ASIC
Memory data bus
Note: UPA graphics associated with desktop workstation only.