National CP3BT26 Manual Do Utilizador
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268
CP3BT26
Figure 135.
Early Write Between Fast Read Cycles
T
idle
T1-2
T1
T1
T2
T3
T1-2
Fast Read
Early Write
CLK
SELx
SELy
WR[1:0]
D[15:0]
(y
≠ x)
(y
≠ x)
RD
Fast Read
t
5
,
t
12
t
5
,
t
12
t
2
t
1
t
5
,
t
12
t
5
,
t
12
t
4
,
t
12
t
4
A[21:0]
A22 ('13 only)
Bus State
DS128
In
In
Out