AM79C874 Datasheet, PDF (19/60 Pages) Advanced Micro Devices – NetPHY-1LP Low Power 10/100-TX/FX Ethernet Transceiver

MII (TXD[3:0])
0000
0001
0010
0011
0100
0101
0 1 10
0111
1000
1001
1010
1011
1100
1101
1110
1111
Undefined
0101
0101
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
PRELIMINARY
Table 2. Code-Group Mapping
Name
PCS Code-Group
Interpretation
0
11110
Data 0
1
01001
Data 1
2
10100
Data 2
3
10101
Data 3
4
01010
Data 4
5
01011
Data 5
6
01110
Data 6
7
01111
Data 7
8
10010
Data 8
9
10011
Data 9
A
10110
Data A
B
10111
Data B
C
11010
Data C
D
11011
Data D
E
11100
Data E
F
11101
Data F
I
11111
IDLE; used as inter-Stream fill code
J
11000
Start-of-Stream Delimiter, Part 1 of 2; always used
in pairs with K
K
10001
Start-of-Stream Delimiter, Part 2 of 2; always used
in pairs with J
T
01101
End-of-Stream Delimiter, Part 1 of 2; always used in
pairs with R
R
00111
End-of-Stream Delimiter, Part 2 of 2; always used in
pairs with T
H
00100
Transmit Error; used to force signaling errors
V
00000
Invalid Code
V
00001
Invalid Code
V
00010
Invalid Code
V
00011
Invalid Code
V
00101
Invalid Code
V
00110
Invalid Code
V
01000
Invalid Code
V
01100
Invalid Code
V
10000
Invalid Code
V
11001
Invalid Code
Am79C874
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