ARM Cortex-M3 Manuale Utente Scaricare il pdf (Pagina 28)

28

Cycle

Operation

ADD

SUB

ORR

AND

EOR

ORR

Optimal Pipelining



All operations here are on registers (single cycle execution)



In this example it takes 6 clock cycles to execute 6 instructions



Clock cycles per Instruction (CPI) = 1

1

2

3

4

5

6

7

8

9

F

D

E

F

D

E

F

E

F

D

E

F

D

E

D

F

D

E

F

-

Fetch

D

-

Decode

E

-

Execute

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