Intel D850EMD2 Product Specification - Page 34
LAN Subsystem Optional
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Intel Desktop Board D850EMD2/D850EMV2 Technical Product Specification 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 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 Green Yellow LED State Off On Off On (steady state) On (brighter and pulsing) 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. 34