Intel D845GEBV2 BLKD845GERG2L-10PK User Manual

 39 

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. 

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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 

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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 

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.