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Datasheet
SMSC LAN91C111 REV C 23 Revision 1.91 (08-18-08)
DATASHEET
Figure 7.1 MI Serial Port Frame Timing Diagram
M
D
I
O
M
D
C
0
2
1
3
4
7
6
5
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
0
0
1
1
P
4
P
1
P
2
P
3
P
0
R
4
R
3
R
2
R
1
R
0
1
0
D
1
5
D
1
4
D
1
3
D
1
2
D
1
1
D
1
0
D
9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
S
T
[
1
:
0
]
O
P
[
1
:
0
]
P
H
Y
A
D
[
4
:
0
]
R
E
G
A
D
[
4
:
0
]
T
A
[
1
:
0
]
D
A
T
A
[
1
5
:
0
]
W
R
I
T
E
B
I
T
S
P
H
Y
C
L
O
C
K
S
I
N
D
A
T
A
O
N
R
I
S
I
N
G
E
D
G
E
S
O
F
M
D
C
W
R
I
T
E
C
Y
C
L
E
M
D
I
O
M
D
C
0
2
1
3
4
7
6
5
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
0
1
1
0
P
4
P
1
P
2
P
3
P
0
R
4
R
3
R
2
R
1
R
0
Z
0
D
1
5
D
1
4
D
1
3
D
1
2
D
1
1
D
1
0
D
9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
S
T
[
1
:
0
]
O
P
[
1
:
0
]
P
H
Y
A
D
[
4
:
0
]
R
E
G
A
D
[
4
:
0
]
T
A
[
1
:
0
]
D
A
T
A
[
1
5
:
0
]
W
R
I
T
E
B
I
T
S
P
H
Y
C
L
O
C
K
S
I
N
D
A
T
A
O
N
R
I
S
I
N
G
E
D
G
E
S
O
F
M
D
C
R
E
A
D
C
Y
C
L
E
R
E
A
D
B
I
T
S
P
H
Y
C
L
O
C
K
S
O
U
T
D
A
T
A
O
N
R
I
S
I
N
G
E
D
G
E
S
O
F
M
D
C