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LAN91C94 Datasheet(PDF) 96 Page - SMSC Corporation

Part # LAN91C94
Description  ISA/PCMCIA SINGLE CHIP ETHERNET CONTROLLER WITH RAM
PDF  120 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

LAN91C94 Datasheet(HTML) 96 Page - SMSC Corporation

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FIGURE 21 - ISA CONSECUTIVE READ CYCLES
VALID ADDRE SS
VALID ADDRE SS
VALID DATA
OUT
VALID DATA
OUT
t15
t4
t3
t20
t5
t6
Z
Z
A0-15
AEN, nSB HE
nIOCS16
nIORD
D0-15
t3
t4
t5
t6
t15
t20
Address, nSB HE , AEN Setup to Control Acti ve
Address, nSBHE, AEN Hol d after Control
Inacti ve
nIORD Low to Valid Data
nIORD High to Data Fl oating
A 4-A15, AEN Low, B ALE High to nIOCS16
Low
Cycl e ti me*
Parameter
m in
typ
max
units
25
20
185
40
30
25
ns
ns
ns
ns
ns
ns
B ALE T ied High
IOCHRDY not used - t20 has to be met
*Note: The cycle time is defined only for consecutive accesses to the Data Register. These values assume
that IOCHRDY is not used.



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