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LXT9883HC

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LXT9883HC 数据手册

LXT9883/9863

Advanced 10/100 Unmanaged Repeater

Datasheet

The LXT9883 is an advanced, 3.3V, 8-port 10/100 repeater. The LXT9883 is compatible with

previous generations of Intel repeaters from the LXT980 and LXT918 families. Eight ports

directly support 100BASE-TX/10BASE-T copper media. Two additional Media Independent

Interface (MII) ports (10/100Mbps selectable) connect to Media Access Controllers (MACs) for

bridge/switch applications. The LXT9863 offers the same features and functionality in a six-port

device. This data sheet uses the singular designation “LXT98x3” to refer to both devices.

The LXT98x3 provides auto-negotiation with parallel detection for the PHY ports. The

LXT98x3 provides two internal repeater state machines—one operating at 10 Mbps and one at

100 Mbps. Once configured, the LXT98x3 automatically connects each port to the appropriate

repeater. The LXT98x3 also provides two Inter-Repeater Backplanes (IRBs) for expansion —

one operating at 10 Mbps and one at 100 Mbps. Up to 240 twisted-pair and MII ports can

logically be combined into one repeater.

Product Features

■ Six or eight 10/100 ports with integrated

twisted-pair PHYs including integrated

filters.

■ Integrated LED drivers with user-selectable

modes.

■ Available in 208-pin QFP package.

■ Two 10/100 MIIs for bridging.

■ Operating temperature range: 0-70°C,

■ Independent segments for 10Mbps and

ambient.

100 Mbps operation.

■ Cascadable Inter-Repeater Backplanes

(IRBs), with option for 5V stacking

compatibility.

As of January 15, 2001, this document replaces the Level One document

LXT9883/LXT9863 — Advanced 10/100 Unmanaged Repeater.

Order Number: 249115-003

August 2001

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