
Note A: Real-Time
Transfer Bus B to Bus A
Note B: Real-Time
Transfer Bus A to Bus B
OEAB OEBA CPAB CPBA SAB SBA
L
L
X
X XL
Note C: Storage
OEAB OEBA CPAB CPBA SAB SBA
H
H
X
X
LX
Note D: Transfer Storage
Data to A or B
OEAB OEBA
X
H
L
X
L
H
CPAB CPBA SAB SBA
X XX
X
XX
XX
OEAB OEBA CPAB CPBA SAB SBA
H
L H or L H or L H H
FIGURE 1.
3
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