LAN91C100-FD-SS SMSC [SMSC Corporation], LAN91C100-FD-SS Datasheet - Page 59

• Manufacturer Part Number: LAN91C100-FD-SS
• Description: FEAST Fast Ethernet Controller with Full Duplex Capability
• Manufacturer: SMSC [SMSC Corporation]

SMSC DS – LAN91C100FD REV. B
WRITE DATA
WRITE DATA
READ DATA
READ DATA
nRD, nWR
t5A
t5A
ADDRESS
t1
t3
t4
t5
t8
t9
ADDRESS
t1
t2
t3
t4
t5
nRD,nWR
nADS
nADS
A1-A15, AEN, nBE0-nBE3 Valid and nADS Low Setup to nRD,
nWR Active
nRD Low to Valid Data
nRD High to Data Floating
Data Setup to nWR Inactive
Data Hold After nWR Inactive
A1-A15, AEN, nBE0-nBE3 Setup to nADS Rising
A1-A15, AEN, nBE0-nBE3 Hold after nADS Rising
A1-A15, AEN, nBE0-nBE3 Valid and nADS Low Setup to
nRD, nWR Active
A1-A15, AEN, nBE0-nBE3 Hold After nRD, nWR Inactive
(Assuming nADS Tied Low)
nRD Low to Valid Data
nRD High to Data Floating
Data Setup to nWR Inactive
Data Hold After nWR Inactive
FIGURE 17 - ASYNCHRONOUS CYCLE - USING nADS
FIGURE 16 - ASYNCHRONOUS CYCLE - nADS=0
A1-A15, AEN, nBE0-nBE3
valid
PARAMETER
PARAMETER
t8
t1
t1
TIMING DIAGRAMS
A1-15, AEN, nBE0-nBE3 valid
Page 59
t3
t9
t3
D0-D31 valid
D0-D31 valid
t5
t5
MIN
25
20
30
5
MIN
25
30
10
15
5
t4
t4
TYP
TYP
MAX
t5A
40
30
t5A
MAX
t2
40
30
Rev. 01-20-06
UNITS
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns