Desktop Board Description
31
1.10 LAN Subsystem (Optional)
The Network Interface Controller subsystem consists of the ICH2, with integrated LAN Media
Access Controller (MAC), 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) physical
layer interface device
•
PCI Power Management
Supports APM
Supports ACPI technology
Supports Wake up from suspend state (Wake on LAN technology)
For information about
Refer to
Obtaining LAN software and drivers
Section 1.2, page 16
1.10.1 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 using the CNR connector.
The Intel 82562ET provides the following functions:
•
Basic 10/100 Ethernet LAN Connectivity
•
Supports RJ-45 connector with status indicator LEDs
•
Full driver compatibility
•
Advanced Power Management support
•
Programmable transit threshold
•
Configuration EEPROM that contains the MAC address
1.10.2 RJ-45 LAN Connector 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 date 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.
