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Intel 80386

Intel 80386
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IDLE
SRAM
READ
SRAM READ SRAMWRITE
SRAM
READ
NON·LOCAL SRAMREAD
IDLE
NON·PIPELINED
PIPELINED
PIPELINED PIPELINED
BUS
CYCLE
. PIPELINED
1 2
3 1 2
1
2 3 1 2
1 2 1 2
W W
WW
S N N N S N N N S N
N N
N N
S N N N S N N N S N N N
W W
CLK
-
V
U-U-
U-
U-
LF
Lr
U-
lr
U-U-
u-
Lr
Lr
LF
U-
ADS#
\.1.
iII
ru
La
I\l
l1J
\ \
fT
~
lIJ
I\l
JJ
ADDR
XX
1'ftJI..
I~
I 'Itt
1m
IXXYXX
IXXYXX
DATA
XX
XXX
X
mxx
xx
YJ.
rtU:X
xm
IXXXX
mx
mxx
xm
READ
READ
WRITE
REfD
READ
READ
SEL
XX
I'IX'IXX
lX
I~
xx
IBm rxmm
I
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1'if!Y:I.
ri
xxn
NONE SELECTED
en
1
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In
In
In
V\-v
\
II
DEN#
IL
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1/\
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"
\
II
MWTC# \ I
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IU
IU
IU
ru
READY#
IL
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V
IL
V-
rL
1,-
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I,
IL"
GENERATED
BY
NON·LOCAL
DEVICE
Figure
6-7.
100-Nanosecond SRAM Timing Diagram
1
W W
U-
\l
IXXX
mx
SRAMWRITE
NON·PIPELINED
2 3 4
S N
N N N N
U-
U-
U-
I'-
W
\.1.
LJ
I
XXX
X
WRITE
[X
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If
r
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IL-
If
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