参数资料
型号: WBLXT975BHCA8
厂商: CORTINA SYSTEMS INC
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP160
封装: ROHS COMPLIANT, PLASTIC, MS-002DD-1, HQFP-160
文件页数: 13/76页
文件大小: 1004K
代理商: WBLXT975BHCA8
LXT974/LXT975 — Fast Ethernet 10/100 Quad Transceivers
20
Datasheet
2.2
Network Media / Protocol Support
The LXT974/975 supports both 10BASE-T and 100BASE-TX Ethernet over twisted-pair, or 100
Mbps Ethernet over fiber media (100BASE-FX). A Media Independent Interface (MII) is used for
communication with the Media Access Controller (MAC).
2.2.1
10/100 Mbps Network Interface
Each of the four network interface ports consists of four external pins (two differential signal
pairs). The pins are shared between twisted-pair (TP) and fiber. Signal assignments (input or
output, positive or negative) vary depending on whether the port is configured for TP or fiber
media. Refer to Table 1 through Table 6 for specific pin assignments.
The LXT974/975 output drivers generate either 100BASE-TX, 10BASE-T, or 100BASE-FX
output. When not transmitting data, the LXT974/975 generates 802.3-compliant link pulses or idle
code. Input signals are decoded either as a 100BASE-TX, 100BASE-FX, or 10BASE-T input,
depending on the mode selected. Auto-negotiation/parallel detection or manual control is used to
determine the speed of this interface.
2.2.1.1
Twisted-Pair Interface
When operating at 100 Mbps, MLT3 symbols are continuously transmitted and received. When not
transmitting data, the LXT974/975 generates “IDLE” symbols.
During 10 Mbps operation, Manchester-encoded data is exchanged. When no data is being
exchanged, the line is left in an idle state.
In 100 Mbps mode, the LXT974/975 is capable of driving a 100BASE-TX connection over 100
Ω,
Category
5, Unshielded Twisted Pair (UTP). A 10BASE-T connection can be supported using
100
Ω Category 3, UTP.
Figure 5. LXT975 Switch Application
Stacked RJ-45
10 or 100 Mbps
LXT975
10/100 Quad
Transceiver
QUAD
Transformer
Fiber
Module
Backplane
Memory
Fiber
Module
Fiber
Module
Fiber
Module
LXT974
10/100
Quad Transceiver
Switch
MAC ASIC
LXT975
10/100 Quad
Transceiver
LXT975
10/100 Quad
Transceiver
LXT975
10/100 Quad
Transceiver
QUAD
Transformer
QUAD
Transformer
QUAD
Transformer
相关PDF资料
PDF描述
WBLXT974BHCA8 DATACOM, ETHERNET TRANSCEIVER, PQFP160
WBLXT974BHCA8 DATACOM, ETHERNET TRANSCEIVER, PQFP160
WBLXT9785EHC.C2V DATACOM, INTERFACE CIRCUIT, PQFP208
WBLXT9785EHC.D0-865110 DATACOM, INTERFACE CIRCUIT, PQFP208
WBLXT9785EHC.D0-865111 DATACOM, INTERFACE CIRCUIT, PQFP208
相关代理商/技术参数
参数描述
WBLXT9785EHC.D0865110 功能描述:IC TXRX 8PORT ETHERNET 208-HQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器,接收器,收发器 系列:- 标准包装:1,000 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SOIC(0.295",7.50mm 宽) 供应商设备封装:16-SOIC 包装:带卷 (TR)
WBLXT9785EHC.D0-865110 制造商:Cortina Systems Inc 功能描述:PHY 8-CH 10Mbps/100Mbps 208-Pin PQFP
WBLXT9785EHC.D0-865111 制造商:Cortina Systems Inc 功能描述:PHY 8-CH 10Mbps/100Mbps 208-Pin PQFP
WBLXT9785HC.D0 功能描述:IC TXRX 8PORT ETHERNET 208-HQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器,接收器,收发器 系列:- 标准包装:1,000 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SOIC(0.295",7.50mm 宽) 供应商设备封装:16-SOIC 包装:带卷 (TR)
WBLXT9785HC.D0-865112 功能描述:TXRX ETH OCT LP COMM 208-HQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器,接收器,收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422,RS485 电源电压:4.75 V ~ 5.25 V 安装类型:通孔 封装/外壳:8-DIP(0.300",7.62mm) 供应商设备封装:8-PDIP 包装:管件 产品目录页面:1402 (CN2011-ZH PDF)