The Realtek RTL8169 is a highly integrated， high performance PCI Gigabit Ethernet Media Access Controller for use in network

　　adapters for servers and personal computers. The RTL8169 fully implements the 33/66MHz， 32/64-bit PCI v2.2 bus interface for

　　host communications with power management and is compliant with the IEEE 802.3 specification for 10/100Mbps Ethernet and

　　the IEEE 802.3z specification for 1000Mbps Ethernet. The RTL8169 supports the auxiliary power auto-detect function， and will

　　auto-configure related bits of the PCI power management registers in PCI configuration space.

　　It also supports the Advanced Configuration Power management Interface （ACPI）， PCI power management for modern

　　operating systems that are capable of Operating System directed Power Management （OSPM） to achieve the most efficient

　　power management system possible.

　　In addition to the ACPI feature， the RTL8169 also supports remote wake-up （including AMD Magic Packet， LinkChg， and

　　Microsoft? wake-up frame） in both ACPI and APM environments. The RTL8169 is capable of performing an internal reset

　　through the application of auxiliary power. When the auxiliary power is applied and the main power remains off， the RTL8169 is

　　ready and waiting for the Magic Packet or Link Change to wake the system up. Also， the LWAKE pin provides four different

　　output signals including active high， active low， positive pulse， and negative pulse. The versatility of the RTL8169 LWAKE pin

　　provides motherboards with Wake-On-LAN （WOL） functionality.

　　The PCI specification is inherently little-endian. The RTL8169 contains the ability to do little-endian to big-endian swaps. It is

　　also possible that the RTL8169 can be used as a basis for a RISC CPU platform which expect the data to be in a big-endian

　　format. This feature allows for maximum flexibility.