參數(shù)資料
型號(hào)： L80227
廠商： LSI CORP
元件分類： 網(wǎng)絡(luò)接口
英文描述： 10BASE-T/100BASE-TX Ethernet Physical Layer Device (PHY)(10BASE-T/100BASE-TX 以太網(wǎng)物理層處理器)
中文描述： DATACOM, ETHERNET TRANSCEIVER, PQFP64
封裝： LQFP-64
文件頁數(shù)： 26/158頁
文件大?。?/td> 1084K
代理商： L80227
Draft 6/5/00
2-6
Functional Description
Copyright 1999 by LSI Logic Corporation. All rights reserved.
2.2.3.1 100BASE-TX
In 100BASE-TX transmit operation, data is received on the Controller
Interface from an external Ethernet controller according to the format
shown in
Figure 2.3
and
Table 2.2
. The data is sent to the 4B5B encoder,
which scrambles the encoded data. The scrambled data is then sent to
the TP transmitter. The TP transmitter converts the encoded and
scrambled data into MLT3 ternary format, preshapes the output, and
drives the twisted-pair cable.
Figure 2.3
MII Frame Format
Table 2.2
Transmit Preamble and SFD Bits at MAC Nibble Interface
Signals
Bit Value
TXDO
X
X
1
1
1. 1st preamble nibble transmitted.
2. 1st SFD nibble transmitted.
3. 1st data nibble transmitted.
4. D0 through D7 are the first 8 bits of the data field.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
D0
3
D4
4
TXD1
X
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D1
D5
TXD2
X
X
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D2
D6
TXD3
X
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
D3
D7
TX_EN
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
PRMBLE
SFD
DATA 1
TX_EN = 1
PREAMBLE =
SFD =
DATAn =
IDLE =
[ 1 0 1 0 ...] 62 Bits Long
[ 1 1 ]
[Between 64
1518 Data Bytes]
TX_EN = 0
TX_EN = 0
IDLE
PREAMBLE
Start
of
Frame
DATA Nibbles
DATA 2
DATA N-1 DATA N
62 Bits
2 Bits
a. MII Frame Format
b. MII Nibble Order
D0
D1
D2
D3
D4
First Bit
MAC Serial Bit Stream
D5
D6
D7
LSB
TXD2/RXD2
TXD3/RXD3
TX_EN = 0
IDLE
MSB
Second
Nibble
TXD0/RXD0
TXD1/RXD1
First
Nibble
MII
Nibble
Stream
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L80227/B 制造商:LSI Corporation 功能描述: 制造商:LSI Corporation 功能描述:L80227/B
L80227/BI 制造商:LSI Corporation 功能描述:L80227/BI
L80227FR 制造商:LAUREL ELECTRONICS 功能描述:Laureate 1/8 DIN multi-function counter / timer, universal 85-264 Vac power, two
L80227-I 制造商:LSI Corporation 功能描述:STD CELL ASIC
L80227-I-LEADFREE 制造商:LSI Corporation 功能描述:796000124413
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