Intel
LXT986x/988x
Dual-Speed Repeater Family
product brief
www.intel.com/
design/network
Packaging
The LXT986x/988x is available in:
s
208-pin Quad Flat Package (QFP)
s
Commercial temperature range
(0C to +70C)
Applications
Applications for the LXT986x/988x family include
low-power, dual-speed network applications:
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Managed stackable hubs
s
Low-cost, unmanaged standalone hubs
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Low-cost, Ethernet connectivity
Intel
Internet Exchange Architecture
Intel
Internet Exchange Architecture is an
end-to-end family of high-performance, flexible
and scalable hardware and software development
building blocks designed to meet the growing
performance requirements of today's networks.
Based on programmable silicon and software
building blocks, Intel
IXA solutions enable faster
development, more cost-effective deployment
and future upgradability of network and
communications systems.
Intel
Internet Exchange
Architecture
Product Description
Today's work groups demand higher-speed
connectivity at lower cost. Intel, a leading
provider of Ethernet communications silicon,
advances dual-speed repeater market segment
growth by offering the Intel
LXT986x/988x
family of low-cost, dual-speed repeater solutions.
The LXT986x/988x architecture reduces total
system cost of shared 10/100Mbps connectivity.
Vendors can offer repeater products at a price
less than that of low-end switches. For the same
bill-of-material (BOM) cost as a switch,
manufacturers can now have a fully managed hub.
The Intel solution is not burdened with a bridge,
enabling lower system cost and power consump-
tion. This solution allows a broad spectrum
of platforms--from eight-port unmanaged
standalones to 24-port managed stackable
repeaters. 3.3V/5V-tolerant technology provides
backward stackability to legacy 10Mbps and
10/100Mbps products.
The Intel LXT986x/988x family further reduces
cost by providing two MII ports that enable
glueless bridging. 3.3V/5V-tolerant technology
allows system designers to reuse already qualified
5V bridge and backplane solutions.
A Serial Management Interface (SMI) provides
easy access to repeater MIB variables, RMON
statistics, as well as status and control. The
significant per-port power reduction offered
by the LXT986x/988x can eliminate the fans
required by higher power solutions.
Product
TP
Identifier
Port
Management
LXT9880
8
Managed
LXT9883
8
Unmanaged
LXT9860
6
Managed
LXT9863
6
Unmanaged
10Mbps IRB
100Mbps IRB
Serial Mgmt.
Port and Mgmt.
Status Indicators
Mode Control
10Mbps
Backplane
10BASE-T
Repeater
Port Switching Logic
100Mbps
Backplane
Serial Port
Device
Management
RMON
and SNMP
Counters
100BASE-X
Repeater
10/100 PHY 0
10/100 PHY 1
10/100 PHY 2
10/100 PHY 3
10/100 PHY 4
10/100 PHY 5
10/100 PHY 6
10/100 PHY 7
MII 1
MII 2
TX_I/O
TX_I/O
TX_I/O
TX_I/O
TX_I/O
TX_I/O
TX_I/O
TX_I/O
TX_I/O
TX_I/O
LXT986x/988x Block Diagram
Serial LED
Drivers
2001 Intel Corporation
Order Number: 249230-001 Printed in USA/0101/1K/MGS/CR
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s
Reduces product migration risk
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Reduce system cost with glueless bridging
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Provide lower power consumption so a fan may
not be necessary
s
Provides full RMON/SNMP status and control
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Offers twice the TP ports in the same package as the LXT980
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Provide dual-speed capability
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Backward stackable with previous generation 5V systems
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Two 10/100Mbps MIIs
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3.4W peak power, 3.3V operation
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High-speed Serial Management Interface
s
Choice of eight (LXT988x) or six (LXT986x)
10/100Mbps TP ports
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Independent 10Mbps and 100Mbps repeater engines
Features
Benefits
Intel Access
Developer's Site
http://developer.intel.com
Intel Internet Exchange Architecture Home Page
http://www.intel.com/IXA
Networking Components Home Page
http://developer.intel.com/design/network
Other Intel Support:
http://developer.intel.com/design/litcentr
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