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參數(shù)資料
| 型號： | AM79C875KI |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | NetPHY⑩ 4LP Low Power Quad 10/100-TX/FX Ethernet Transceiver |
| 中文描述： | DATACOM, ETHERNET TRANSCEIVER, PQFP100 |
| 封裝： | 14 X 20 MM, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 17/48頁 |
| 文件大?。?/td> | 2480K |
| 代理商： | AM79C875KI |
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Am79C875
17
Table 1. Code-Group Mapping
MII (TXD[3:0])
Name
PCS Code-Group
Interpretation
0 0 0 0
0
1 1 1 1 0
Data 0
0 0 0 1
1
0 1 0 0 1
Data 1
0 0 1 0
2
1 0 1 0 0
Data 2
0 0 1 1
3
1 0 1 0 1
Data 3
0 1 0 0
4
0 1 0 1 0
Data 4
0 1 0 1
5
0 1 0 1 1
Data 5
0 1 10
6
0 1 1 1 0
Data 6
0 1 1 1
7
0 1 1 1 1
Data 7
1 0 0 0
8
1 0 0 1 0
Data 8
1 0 0 1
9
1 0 0 1 1
Data 9
1 0 1 0
A
1 0 1 1 0
Data A
1 0 1 1
B
1 0 1 1 1
Data B
1 1 0 0
C
1 1 0 1 0
Data C
1 1 0 1
D
1 1 0 1 1
Data D
1 1 1 0
E
1 1 1 0 0
Data E
1 1 1 1
F
1 1 1 0 1
Data F
Undefined
I
1 1 1 1 1
IDLE; used as inter-Stream fill code
0 1 0 1
J
1 1 0 0 0
Start-of-Stream Delimiter, Part 1 of 2; always used
in pairs with K
0 1 0 1
K
1 0 0 0 1
Start-of-Stream Delimiter, Part 2 of 2; always used
in pairs with J
Undefined
T
0 1 1 0 1
End-of-Stream Delimiter, Part 1 of 2; always used in
pairs with R
Undefined
R
0 0 1 1 1
End-of-Stream Delimiter, Part 2 of 2; always used in
pairs with T
Undefined
H
0 0 1 0 0
Transmit Error; used to force signaling errors
Undefined
V
0 0 0 0 0
Invalid Code
Undefined
V
0 0 0 0 1
Invalid Code
Undefined
V
0 0 0 1 0
Invalid Code
Undefined
V
0 0 0 1 1
Invalid Code
Undefined
V
0 0 1 0 1
Invalid Code
Undefined
V
0 0 1 1 0
Invalid Code
Undefined
V
0 1 0 0 0
Invalid Code
Undefined
V
0 1 1 0 0
Invalid Code
Undefined
V
1 0 0 0 0
Invalid Code
Undefined
V
1 1 0 0 1
Invalid Code
In 100BASE-FX mode, the external fiber-optic receiver
performs the signal energy detection function and com-
municates this information directly to the NetPHY
4LP device through SDI± pins.
In 10BASE-T mode, a link-pulse detection circuit will
constantly monitor the RX± pins for the presence of
valid link pulses.
10BASE-T Block
The NetPHY 4LP transceiver incorporates four fully
independent 10BASE-T physical layer functions, in-
cluding clock recovery (ENDEC), MAUs, and trans-
ceiver functions. The NetPHY 4LP transceiver
receives 10-Mbps data from the MAC, switch, or re-
peater across the RMII at 5 million di-bits per second.
It then Manchester encodes the data before transmis-
sion to the network.
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