Product Description
35
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. The LAN subsystem includes the
following features:
• PCI Bus Master interface
• CSMA/CD Protocol Engine
• Serial CSMA/CD unit interface that supports the following physical layer interface devices:
82562ET onboard LAN
82562ET/EM (10/100 Mbit/sec Ethernet) on CNR bus
82562EH (1 Mbit/sec HomePNA
†
) on CNR bus
• PCI Power Management
Supports ACPI technology
Supports wake-up from a suspend state using the PME# signal
1.11.1 Intel
®
82562ET PLC 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
• RJ-45 connector support 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 8 describes the LED states when the
board is powered up and the LAN subsystem is operating.
Table 8. 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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