參數(shù)資料
型號: L80227
廠商: LSI CORP
元件分類: 網絡接口
英文描述: 10BASE-T/100BASE-TX Ethernet Physical Layer Device (PHY)(10BASE-T/100BASE-TX 以太網物理層處理器)
中文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封裝: LQFP-64
文件頁數(shù): 23/158頁
文件大?。?/td> 1084K
代理商: L80227
Draft 6/5/00
Overview
2-3
Copyright 1999 by LSI Logic Corporation. All rights reserved.
2.2 Overview
This section gives a brief overview of the device functional operation.
The L80227 is a complete 100/10 Mbits/s Ethernet Media Interface IC. A
block diagram is shown in
Figure 2.1
.
2.2.1 General Operation and Frame Format
2.2.2 Channel Operation
The PHY operates in the 100BASE-TX mode at 100 Mbits/s mode, or in
the 10BASE-T mode at 10 Mbits/s. The 100 Mbits/s mode and the
10 Mbits/s mode differ in data rate, signaling protocol, and allowed wiring
as follows:
100BASE-TX mode uses two pairs of category 5 or better UTP or
STP twisted-pair cable with 4B5B encoded, scrambled, and MLT3
coded 62.5-MHz ternary data to achieve a throughput of 100 Mbits/s.
10 Mbits/s mode uses two pairs of category 3 or better UTP or STP
twisted-pair cable with Manchester encoded 10-MHz binary data to
achieve a 10 Mbits/s throughput
The data symbol format on the twisted-pair cable for the 100 and 10
Mbits/s modes is defined in IEEE 802.3 specifications and shown in
Figure 2.2
.
2.2.3 Data Paths
In each device, there is a transmit data path and a receive data path
associated with each PHY channel. The transmit data path is from the
Controller Interface to the twisted-pair transmitter. The receive data path
is from the twisted-pair receiver to the Controller Interface.
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相關代理商/技術參數(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