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| PC87570 Datasheet, PDF (146/168 Pages) National Semiconductor (TI) – PC87570 Keyboard and Power Management Controller | |||
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19.5.2 BIU
Device Specifications
CLK
t3
A0-18
Normal
Read
T1
T2
t3, t12
Early Write
T1
T2
T3
Idle
Cycle
Normal
Read
T1
T2
SELx
t5, t12
SELy
(y â x)
t5, t12
t5, t12
D0-15
t3
t8,
t12
In
Out
t5, t12
RD
WR0,1
t5,
t12
t9
t6, t13
t6, t13
BST0-2
t4, t13
t4, t13
t5, t12
t1
t2
In
Figure 19-8. Early Write Between Normal Read Bus Cycles, 0 Wait, AC Timing
146
www.national.com
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