Intel D845PEBT2 Product Specification - Page 33

LAN Subsystem

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Product Description 1.13 LAN Subsystem The network interface controller subsystem consists of the ICH4 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 Mbits/sec Ethernet) • PCI power management  Supports ACPI technology  Supports LAN wake capabilities 1.13.1 Intel® 82562ET Physical Layer Interface Device The Intel 82562ET component provides an interface to the back panel RJ-45 connector with integrated LEDs. 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 1.13.2 RJ-45 LAN Connector with Integrated LEDs Two LEDs are built into the RJ-45 LAN connector (shown in Figure 7 below). Green LED Yellow LED OM15076 Figure 7. LAN Connector LED Locations Table 5 describes the LED states when the Desktop Board is powered up and the LAN subsystem is operating. Table 5. LAN Connector LED States LED Color LED State Condition Green Off 10 Mbits/sec data rate is selected. On 100 Mbits/sec data rate is selected. Yellow Off LAN link is not established. On (steady state) LAN link is established. On (brighter and pulsing) The computer is communicating with another computer on the LAN. 33

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Product Description
33
1.13 LAN Subsystem
The network interface controller subsystem consists of the ICH4 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 Mbits/sec Ethernet)
•
PCI power management
Supports ACPI technology
Supports LAN wake capabilities
1.13.1
Intel
®
82562ET Physical Layer Interface Device
The Intel 82562ET component provides an interface to the back panel RJ-45 connector with
integrated LEDs.
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
1.13.2
RJ-45 LAN Connector with Integrated LEDs
Two LEDs are built into the RJ-45 LAN connector (shown in Figure 7 below).
Green LED
Yellow LED
OM15076
Figure 7.
LAN Connector LED Locations
Table 5 describes the LED states when the Desktop Board is powered up and the LAN subsystem
is operating.
Table 5.
LAN Connector LED States
LED Color
LED State
Condition
Off
10 Mbits/sec data rate is selected.
Green
On
100 Mbits/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.