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Intel Desktop Board D845HV/D845WN Technical Product Specification
34
1.11 LAN Subsystem (Optional)
The Network Interface Controller subsystem consists of the ICH2 (with integrated LAN Media
Access Controller) and a physical layer interface device. Features of the LAN subsystem include:
PCI Bus Master interface
CSMA/CD Protocol Engine
Serial CSMA/CD unit interface that supports the 82562ET (10/100 Mbit/sec Ethernet) on the
CNR bus
PCI Power Management
Supports ACPI technology
Supports LAN wake capabilities
1.11.1 Intel
®
82562ET Platform LAN Connect Device
The Intel 82562ET component provides an interface to the back panel RJ-45 connector with
integrated LEDs. This physical interface may alternately be provided through the CNR connector.
The Intel 82562ET provides the following functions:
Basic 10/100 Ethernet LAN connectivity
Supports RJ-45 connector with status indicator LEDs on the back panel
Full device driver compatibility
ACPI support
Programmable transit threshold
Configuration EEPROM that contains the MAC address
1.11.2 RJ-45 LAN Connector with Integrated LEDs
Two LEDs are built into the RJ-45 LAN connector. Table 7 describes the LED states when the
board is powered up and the LAN subsystem is operating.
Table 7. LAN Connector LED States
LED Color LED State Condition
Off 10 Mbit/sec data rate is selected.Green
On 100 Mbit/sec data rate is selected.
Off LAN link is not established.
On (steady state) LAN link is established.
Yellow
On (brighter and pulsing) The computer is communicating with another computer on
the LAN.
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