LAN91C100 Datasheet, PDF (84/101 Pages) SMSC Corporation – FEAST™ Fast Ethernet Controller

FIGURE 14 - ASYNCHRONOUS CYCLE - USING nADS
ADDRESS
nADS
A1-A15, AEN,nBE0-nBE3 valid
t8
t9
READ DATA
t3
t4
nRD, nWR
t1
WRITE DATA
PARAMETER
t5
D0-D31 valid
MIN
TYP
t1 A1-A15, AEN, nBE0-nBE3 Valid and nADS Low Setup 25
to nRD, nWR Active
t3 nRD Low to Valid Data
t4 nRD High to Data Floating
t5 Data Setup to nWR Inactive
30
t5A Data Hold After nWR Inactive
5
t8 A1-A15, AEN, nBE0-nBE3 Setup to nADS Rising
10
t9 A1-A15, AEN, nBE0-nBE3 Hold after nADS Rising
15
t5A
MAX
40
30
UNITS
ns
ns
ns
ns
ns
ns
ns
73