NEC Network Controller uPD98502 User Manual
Page 86
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CHAPTER 2 V
R
4120A
86
Preliminary User’s Manual S15543EJ1V0UM
Table 2-22. Operation in Each Stage of Pipeline (MIPS III)
Cycle
Phase
Mnemonic
Description
IF
Φ1
IDC
Instruction cache address decode
ITLB
Instruction address translation
Φ2
ICA
Instruction cache array access
ITC
Instruction tag check
RF
Φ1
IDEC
Instruction decode
Φ2
RF
Register operand fetch
BAC
Branch address calculation
EX
Φ1
EX
Execution stage
DVA
Data virtual address calculation
SA
Store align
Φ2
DCA
Data cache address decode/array access
DTLB
Data address translation
DC
Φ1
DLA
Data cache load align
DTC
Data tag check
DTD
Data transfer to data cache
WB
Φ1
DCW
Data cache write
WB
Write back to register file
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