參數(shù)資料
型號: μPD30100
廠商: NEC Corp.
英文描述: 64-bit RISC Microprosessor(64位 RISC 微處理器)
中文描述: 64位RISC Microprosessor(64位的RISC微處理器)
文件頁數(shù): 12/52頁
文件大?。?/td> 365K
代理商: ΜPD30100
12
μ
PD30100
3.2 Pipeline
Each instruction is executed in the following five steps:
(1) IF
(2) RF
(3) EX
(4) DC
(5) WB
instruction cache fetch
register fetch
execution
data cache
write back
The V
R
4100 is provided with a 5-stage pipeline. Although it takes five clocks to execute each instruction,
paralleling is implemented at instruction level. PClock, which is the pipeline clock, operates at a frequency 4
times higher than that of the master clock input.
The following shows the pipeline outline.
Figure 3-3. Pipeline of V
R
4100 (5 stages)
PClock
IF
RF
EX
DC
WB
IF
RF
EX
DC
WB
IF
RF
EX
DC
WB
IF
RF
EX
DC
WB
IF
RF
EX
DC
WB
Current
CPU
cycle
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