Pipeline Stages - Sun Microsystems UltraSPARC-I User Manual

raSPARC User's Manual

2 Pipeline Stages

This section describes each pipeline stage in detail. Figure 2-2 illustrates the pipe-
line stages.
D G
IST_data
DU
address bus
data bus
instruction bus
Figure 2-2 UltraSPARC Pipeline Stages (Detail)
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E C
Icc
IEU
VA
D-Cache
Tag
TLB
D-Cache
Data
FPST_data
FP add
G ALU
FP mul
G mul
R X
1
N
N
1
2
(Results in Annex)
LSU
Tag Check
Hit
LDQ/STQ
PA
SB
X
X
2
3
N
W
3
ECU
FPU
GRU