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VR4102 Datasheet(PDF) 100 Page - NEC

Part # VR4102
Description  64/32-bit Microprocessor
PDF  701 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

VR4102 Datasheet(HTML) 100 Page - NEC

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CHAPTER 4 VR4102 PIPELINE
100
Figure 4-2. Instruction Execution in the Pipeline
(Five stages)
Current CPU cycle
PCycle
IF1
IF2
RF1 RF2 EX1 EX2 DC1 DC2 WB1 WB2
IF1
IF2
RF1 RF2 EX1 EX2 DC1 DC2 WB1 WB2
IF1
IF2
RF1 RF2 EX1 EX2 DC1 DC2 WB1 WB2
IF1
IF2
RF1 RF2 EX1 EX2 DC1 DC2 WB1 WB2
IF1
IF2
RF1 RF2 EX1 EX2 DC1 DC2 WB1 WB2
4.1.1 Pipeline Activities
Figure 4-3 shows the activities that can occur during each pipeline stage; Table 4-1 describes these pipeline
activities.
Figure 4-3. Pipeline Activities
IF1
I Fetch
and
Decode
Branch
Load/Store
ALU
Cycle
Phase
PCycle
PClock
IF2
)2
)1
)2
)1
)2
)1
)2
)1
)2
)1
RF1
RF2
EX1
EX2
DC1
DC2
WB1
WB2
ITLB
IDC
ITC
ICA
IDEC
WB
WB
DCW
DTD
SA
DVA
EX
BAC
RF
DCA
DLA
DTLB
DTC



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