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PDF LXT9880 Data sheet ( Hoja de datos )
| Número de pieza | LXT9880 | |
| Descripción | (LXT9880 / LXT9860) Advanced 10/100 Repeater | |
| Fabricantes | Intel | |
| Logotipo |  |
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LXT9860/9880
Advanced 10/100 Repeater with Integrated Management
Datasheet
The LXT9880 is the next-generation repeater family, integrated with eight 10/100 transceivers.
The LXT9880 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 (10/100 Mbps selectable) connect to Media
Access Controllers (MACs) for bridge/switch applications. The LXT9860 offers the same
features and functionality in a six-port device. This data sheet uses the singular designation
“LXT98x0” to refer to both devices.
The LXT98x0 provides auto-negotiation with parallel detection for the PHY ports. The
LXT98x0 provides two internal repeater state machines—one operating at 10 Mbps and one at
100 Mbps. Once configured, the LXT98x0 automatically connects each port to the appropriate
repeater. The LXT98x0 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. The LXT98x0 supports SNMP and RMON
management via on-chip 32- and 64-bit counters. The counters and control functions are
accessible via a high-speed Serial Management Interface (SMI).
Product Features
s Six or eight 10/100 ports with integrated
twisted-pair PHYs including integrated
filters.
s Two 10/100 MIIs for bridging.
s Independent segments for 10 Mbps and
100 Mbps operation.
s Cascadable Inter-Repeater Backplanes
(IRBs), with option for 5V stacking
compatibility.
s Hardware assist for RMON and the
Repeater MIB.
For More Information…
s High-speed Serial Management Interface
(SMI).
s Two address-tracking registers per port.
s Source Address matching function.
s Integrated LED drivers with user-selectable
modes.
s Available in 208-pin QFP package.
s Operating temperature range: 0-70°C,
ambient.
s Available in extended temperature range:
-40 to +85°C, ambient.
Refer to “Section 1.0, “Other Related Documents…” on page 11” .
As of January 15, 2001, this document replaces the Level One document
known as Advanced 10/100 Repeater with Integrated Management.
Order Number: 248987-003
August 2001
1 page  
Advanced 10/100 Repeater with Integrated Management — LXT9860/9880
5.0 Test Specifications......................................................................................................... 75
6.0 Register Definitions ....................................................................................................... 87
6.1 Register Map ....................................................................................................... 87
6.2 Counter Registers ............................................................................................... 95
6.2.1 Port Counter Registers........................................................................... 95
6.2.2 RMON Counter Registers ...................................................................... 96
6.3 Ethernet Address Registers ................................................................................ 99
6.3.1 Port Address Registers .......................................................................... 99
6.3.2 Search Address Registers...................................................................... 99
6.4 Repeater Port Control Registers .......................................................................101
6.4.1 General Port Control Registers ............................................................101
6.4.2 Port Link Control Register ....................................................................101
6.4.3 Port Learn Enable Register ..................................................................102
6.5 Repeater Port Status Registers.........................................................................102
6.6 PHY Port Status Registers ................................................................................104
6.7 PHY Port Control Registers...............................................................................107
6.8 Repeater Port Control/Status Registers ............................................................108
6.8.1 Device/Revision Register .....................................................................111
6.8.2 LED Control Registers.......................................................................... 111
6.8.3 LED Global Control Register ................................................................ 111
6.8.4 Port LED Control Register....................................................................111
6.8.5 LED Timer Control Register .................................................................112
6.8.6 Repeater Reset Register......................................................................113
6.8.7 Software Reset Register ......................................................................113
6.8.8 Interrupt Registers................................................................................113
6.9 Serial Controller Registers ................................................................................115
7.0 Mechanical Specifications...........................................................................................117
Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
5
5 Page 
Advanced 10/100 Repeater with Integrated Management — LXT9860/9880
Figure 1. LXT98x0 Block Diagram
10M IRB
100M IRB
Mode Control
Serial Mgmt
Port & Mgmt
Status Indicators
10 Mbps
Backplane
10BASE-T
Repeater
100 Mbps
Backplane
100BASE-X
Repeater
Serial Port
Serial LED
Drivers
Device
Management
RMON &
SNMP
Counters
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
10/100 PHY 8
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
MII_I/O
MII_I/O
1.0
Other Related Documents…
The LXT98x0 Design and Layout Guide (formerly Application Note 113) provides detailed design
and layout guidelines.
The IRB Design and Layout Guide (formerly Application Note 112) provides detailed guidelines
design and layout of Intel’s Inter-Repeater Backplane (IRB).
The LXT98x-to-LXT98x0 Migration Guide (formerly Application Note 111) compares features and
registers of the LXT98x and more recent LXT98x0 devices.
The LXT9883/LXT9863 Data Sheet specifically details the unmanaged eight-port and six-port
devices.
The High-Speed Serial Management Interface (formerly Application Note 64) explains how to
connect an SCC to Intel devices and how to implement management across a network system.
Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LXT9880.PDF ] | |
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