MC68LC040RC25A Datasheet, PDF (100/442 Pages) Freescale Semiconductor, Inc – M68040 Users Manual

Freescale Semiconductor, Inc.
I4—CPU WRITE MISS/WT
I7—CINV
I8—CPUSH
INVALID
V7—CINV
V8—CPUSH
V10—SNOOP READ HIT/INVALIDATE
V11—SNOOP WRITE HIT/INVALIDATE
V12—SNOOP WRITE HIT/SINK DATA &
SIZE = LINE
V13—SNOOP WRITE HIT/SINK DATA &
SIZE = LINE
I1—CPU READ MISS
V1—CPU READ MISS
V2—CPU READ HIT
V4—CPU WRITE MISS/WT
V6—CPU WRITE HIT/WT
V9—SNOOP READ HIT/LEAVE DIRTY
VALID
D7—CINV
I3—CPU WRITE MISS/CB
D8—CPUSH
D10—SNOOP READ
HIT/INVALIDATE
D11—SNOOP WRITE HIT/
INVALIDATE
D13—SNOOP WRITE HIT/SINK
DATA & SIZE = LINE
V3—CPU WRITE MISS/CB
V5—CPU WRITE HIT/CB
DIRTY
D1—CPU READ MISS
ABBREVIATIONS:
WT—WRITE-THROUGH MODE
CB—COPYBACK MODE
SNOOP OPERATION INDICATES:
READ OR WRITE / SNOOP CONTROL
ENCODING
D2—CPU READ HIT
D3—CPU WRITE MISS/CB
D4—CPU WRITE MISS/WT
D5—CPU WRITE HIT/CB
D6—CPU WRITE HIT/WT
D9—SNOOP READ HIT/LEAVE DIRTY
D12—SNOOP WRITE HIT/SINK DATA
& SIZE = LINE
Figure 4-6. Data-Cache Line State Diagram
4-16
M68040 USER'S MANUAL
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