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ø
A
to A
,
23
0
CS to CS
3
0
AS
RD
(read)
D
to D
15
0
(read)
HWR, LWR
(write)
D
to D
15
0
(write)
T
1
t
CYC
t
t
CH
CL
t
CF
t
cyc
t
AD
t
t
ASD
ACC3
t
AS1
t
t
ASD
ACC3
t
AS1
t
ACC1
t
ASD
t
AS1
t
WSW1
t
WDS1
t
WDD
Figure 21-7 Basic Bus Cycle: Two-State Access
T
2
t
CR
t
PCH
t
t
SD
AH
t
PCH
t
t
SD
AH
t
t
RDS
RDH
t
PCH
t
t
SD
AH
t
WDH
693
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