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Rev. 5.00, 09/03, page 148 of 760
Interrupt
acceptance
IRL
0.5 × Icyc
+ 0.5 × Bcyc
+ 2 × Pcyc
Instruction (instruction
replaced by interrupt
exception handling)
IF ID EX EX EX EX
IF
IF ID EX
5 × Icyc
Start of interrupt
handling
IF: Instruction fetch: Instruction is fetched from memory in which program is stored.
ID: Instruction decode: Fetched instruction is decoded.
EX: Instruction execution: Data operation and address calculation are performed.
Overrun fetch
First instruction of interrupt
handler
Figure 6.4 Example of Pipeline Operations when IRL Interrupt is Accepted