LAN91C95 데이터 시트보기 (PDF) - SMSC -> Microchip
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LAN91C95 Datasheet PDF : 144 Pages
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A0-15
(ISA)
AEN
nIOWR
t3
nIORD
Z
D0-7
VALID ADDRESS
t5
VALID DATA OUT
VALID ADDRESS
t3
t7
t8
Z
VALID DATA IN
Parameter
min
typ
max
units
t3
Address, nSBHE, AEN Setup to Control Active 25
t5
nIORD Low to Valid Data
t7
Data Setup to nIOWR Rising
30
t8
Data Hold after nIOWR Rising
9
ns
40
ns
ns
ns
FIGURE 32 - 8 BIT MODE REGISTER CYCLES
A0-19
t3
nMEMRD
ADDRESS VALID
D0-15
Z
Parameter
t3
Address Setup to Control Active
t4
Address Hold after Control Inactive
t16
nMEMRD Low to nROM Low
t17
nMEMRD High to nROM High
BALE tied high
t4
min
typ
max
units
25
ns
20
ns
0
25
ns
0
30
ns
FIGURE 33 - EXTERNAL ROM READ ACCESS
131
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