2-20 General DescriptionNetwork ControllerNOTE: To ensure EMC product regulation compliance, the systemmust be used with a shielded LAN cable.The mother board uses a dual-channel Ethernet Controller and supports 10Base-T/100Base-TX/1000Base-T network subsystems.The network controller supports the following features: 64-bit, 100 MHz PCI-X interface Integrated IEEE 802.3 10Base-T, 100Base-TX, and 1000Base-T compatible PHY IEEE 820.3u auto-negotiation support Chained memory structure similar to the 82559, 82558, 82557 and 82596 Full duplex support at both 10 Mbps, 100 Mbps, and 1000 Mbps operation Low power +3.3 V deviceOn the system board, NIC 1 can be used as both a network interface and server managementinterface.Keyboard and MouseThe keyboard/mouse controller is PS/2-compatible. A Y-cable can be used if both a PS/2 mouse andkeyboard are required at the same time.ACPIThe mother board supports the Advanced Configuration and Power Interface (ACPI) as defined bythe ACPI 2.0 specifications. An ACPI aware operating system can put the system into a state wherethe hard drives spin down, the system fans stop, and all processing is halted. However, the powersupply will still be on and the processors will still be dissipating some power, so the power supplyfans will still run.The system board supports sleep states s0, s1, s4, and s5: s0: Normal running state. s1: Processor sleep state. No context will be lost in this state and the processor caches willmaintain coherency. s4: Hibernate or Save to Disk: The memory and machine state are saved to disk. Pressingthe power button or other wakeup event will restore the system state from the disk andresume normal operation. This assumes that no hardware changes have been made to thesystem while it was off. s5: Soft off: Only the RTC section of the CSB and the BMC are running in this state. Nocontext is saved by the OS or hardware.IMPORTANT: The system is off only when the AC power cord isdisconnected.
