LAN91C100 Datasheet, PDF (3/101 Pages) SMSC Corporation – FEAST™ Fast Ethernet Controller

even though ISA cannot sustain 100 Mbps
traffic. Fast Ethernet could be adopted for ISA-
based nodes on the basis of the aggregate
traffic benefits.
FEAST is software-compatible with the existing
LAN9000 family of products and can use current
LAN9000 drivers in 16- and 32-bit Intel X86-
based environments.
Two different interfaces are supported on the
network side. The first is a conventional seven
wire ENDEC interface that connects to the
LAN83C694 for 10BASE-T and coax 10 Mbps
Ethernet networks. The second interface follows
the MII (Media Independent Interface)
specification draft standard, consisting of 4 bit
wide data transfers at the nibble rate. FEAST
also interfaces to the MII serial management
protocol. Four I/O ports (one input and three
output pins) are provided for LAN83C694
configuration.
PIN CONFIGURATION
nLNK
1
TXEN
2
XTAL1
3
XTAL2
4
VDD
5
MIISEL
6
nCSOUT
7
NC
8
TX25
9
VDD
10
RX_ER
11
RX_DV
12
IOS0
13
GND
14
IOS1
15
IOS2
16
RX25
17
COL100
18
CRS100
19
RXD0
20
RXD1
21
RXD2
22
VDD
23
RXD3
24
TXD0
25
TXD1
26
VDD
27
TXD2
28
TXD3
29
TXEN100
30
nRWE0
31
GND
32
RD7
33
RD6
34
RD5
35
RD4
36
NC
37
RD3
38
RD2
39
RD1
40
VDD
41
RD0
42
RD15
43
RD14
44
RD13
45
GND
46
RD12
47
RD11
48
RD10
49
GND
50
ENEEP
51
EEDO
52
LAN91C100
208 Pin PQFP
and TQFP
3
156
A12
155
A11
154
A10
153
A9
152
A8
151
A7
150
A6
149
A5
148
A4
147
A3
146
A2
145
A1
144
D8
143
VDD
142
D9
141
D10
140
D11
139
D12
138
GND
137
D13
136
D14
135
D15
134
GND
133
D16
132
VDD
131
D17
130
D18
129
D19
128
GND
127
D20
126
D21
125
VDD
124
D22
123
D23
122
GND
121
D24
120
GND
119
VDD
118
D25
117
D26
116
GND
115
D27
114
D28
113
D29
112
D30
111
GND
110
D31
109
nRDYRTN
108
nLDEV
107
VDD
106
nSRDY
105
LCLK