Lan Subsystem; Intel ® 82562Et Platform Lan Connect Device; Lan Connector With Integrated Leds; Lan Connector Led States - Intel D845GRG Using Manual

Technical Product Specification for Intel Desktop Boards using the Intel 845G Chipset

1.10 LAN Subsystem

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
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 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
•
EEPROM that contains the MAC address
1.10.2 RJ-45 LAN Connector with Integrated LEDs
Two LEDs are built into the RJ-45 LAN connector. Table 9 describes the LED states when the
board is powered up and the LAN subsystem is operating.
Table 9.

LAN Connector LED States

LED Color LED State
Green Off
On
Yellow Off
On (steady state)
On (brighter and pulsing)
13
The CNR connector and the LAN subsystem are mutually exclusive features. Contact your Intel sales
representative to determine which of these features is present on your Intel Desktop Board.
30
Condition
10 Mbit/sec data rate is selected.
100 Mbit/sec data rate is selected.
LAN link is not established.
LAN link is established.
The computer is communicating with another computer on
the LAN.
13
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