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FWLXT9785BC.D0SE000

更新时间： 2024-10-29 15:45:07
品牌 Logo 应用领域
英特尔 - INTEL 以太网：16GBASE-T电信电信集成电路
页数 文件大小 规格书
228页 3934K
描述
Ethernet Transceiver, 8-Trnsvr, PBGA241,

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FWLXT9785BC.D0SE000 技术参数

生命周期：Obsolete包装说明：BGA, BGA241,17X17,50
Reach Compliance Code：unknown风险等级：5.84
Is Samacsys：N数据速率：100000 Mbps
JESD-30 代码：S-PBGA-B241端子数量：241
收发器数量：8最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：BGA封装等效代码：BGA241,17X17,50
封装形状：SQUARE封装形式：GRID ARRAY
电源：2.5,2.5/3.3 V认证状态：Not Qualified
子类别：Network Interfaces表面贴装：YES
电信集成电路类型：ETHERNET TRANSCEIVER温度等级：COMMERCIAL
端子形式：BALL端子节距：1.27 mm
端子位置：BOTTOMBase Number Matches：1

FWLXT9785BC.D0SE000 数据手册

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Intel® LXT9785 and LXT9785E Advanced  
8-Port 10/100 Mbps PHY Transceivers  
Datasheet  
The Intel® LXT9785 and LXT9785E are 8-port Fast Ethernet PHY Transceivers supporting  
IEEE 802.3 physical layer applications at 10 Mbps and 100 Mbps. These devices provide Serial/  
Source Synchronous Serial Media Independent Interfaces (SMII/SS-SMII) and Reduced Media  
Independent Interface (RMII) for switching and other independent port applications. The  
LXT9785 and LXT9785E are identical except for the IP telephony features included in the  
LXT9785E transceiver. The LXT9785E is an enhanced version of the LXT9785 that detects  
Data Terminal Equipment (DTE) requiring power from the switch over a CAT5 cable. The  
system uses the information collected by the LXT9785E to apply power if the DTE at the far end  
requires power over the cable, such as an IP telephone.  
Each network port can provide a twisted-pair (TP) or Low-Voltage Positive Emitter Coupled  
Logic (LVPECL) interface. The twisted-pair interface supports 10 Mbps and 100 Mbps  
(10BASE-T and 100BASE-TX) Ethernet over twisted-pair. The LVPECL interface supports  
100 Mbps (100BASE-FX) Ethernet over fiber-optic media.  
The LXT9785/LXT9785E provides three discrete LED driver outputs for each port. The devices  
support both half-duplex and full-duplex operation at 10 Mbps and 100 Mbps and require only a  
single 2.5 V power supply.  
Applications  
Enterprise switches  
Storage Area Networks  
IP telephony switches  
Multi-port Network Interface Cards (NICs)  
Product Features  
Eight IEEE 802.3-compliant 10BASE-T or  
100BASE-TX ports with integrated filters.  
100BASE-FX fiber-optic capability on all  
ports.  
Supports both auto-negotiation systems and  
legacy systems without auto-negotiation  
capability.  
Robust baseline wander correction.  
2.5 V operation.  
Low power consumption; 250 mW per port  
typical.  
Configurable through the MDIO port or  
external control pins.  
JTAG boundary scan.  
Multiple RMII or SMII/SS-SMII ports for  
independent PHY port operation.  
208-pin PQFP: LXT9785HC,  
LXT9785EHC, LXT9785HE.  
Auto MDI/MDIX crossover capability.  
241-ball BGA: LXT9785BC,  
LXT9785EBC.  
196-ball BGA: LXT9785MBC (includes  
DTE detection similar to the LXT9785E)  
Proprietary Optimal Signal Processing™  
architecture improves SNR by 3 dB over  
ideal analog filters.  
Optimized for dual-high stacked RJ-45  
applications.  
MDIO sectionalization into 2x4 or 1x8  
configurations.  
DTE detection for remote powering  
applications (LXT9785E and  
LXT9785MBC only).  
o
Extended temperature operation of -40 C  
o
to +85 C (LXT9785E only).  
Document Number: 249241  
Revision Number: 009  
Revision Date: April 30, 2004  
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