Datasheet

Product Description

1.11 LAN Subsystem (Optional)

The Network Interface Controller subsystem consists of the ICH4 (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

The Desktop Board D845GERG2 supports a Gigabit Ethernet Controller option, described below.

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 Intel

82540EM Gigabit Ethernet Controller

The Intel 82540EM Gigabit Ethernet Controller (available only on the Desktop Board

D845GERG2) provides the following functions:

• Gigabit Ethernet MAC and PHY layer functions in a single component

• Basic 10/100/1000 Ethernet LAN connectivity

• Integrated PHY for 10/100/1000 Mbit/sec full and half duplex operation

• Supports RJ-45 connector with status indicator LEDs on the back panel

• ACPI support

• Configuration EEPROM that contains the MAC address

1.11.3 RJ-45 LAN Connector with Integrated LEDs

Two LEDs are built into the RJ-45 LAN connector. Table 12 describes the LED states when the

Desktop Board is powered up and the 10/100 LAN subsystem is operating.