WPD helps prevent unwanted/unauthorized wake-up of a sleeping computer.

The RTL8111EP supports Microsoft Wake Packet Detection (WPD) to provide Wake-Up Frame information to the OS, e.g., PatternID, OriginalPacketSize, SavedPacketSize, SavedPacketOffset, etc. To further reduce power consumption, the RTL8111EP also supports PCIe L1.Off and L1.Snooze. To support WOL from a deep power down state (e.g., D3cold, i.e., main power is off and only auxiliary exists), the auxiliary power source must be able to provide the needed power for the RTL8111EP. In addition to the ACPI feature, remote wake-up (including AMD Magic Packet and Microsoft Wake-Up Frame) is supported in both ACPI and APM (Advanced Power Management) environments. PCI MSI (Message Signaled Interrupt) and MSI-X are also supported. It also supports an auxiliary power auto-detect function, and will auto-configure related bits of the PCI power management registers in PCI configuration space.Īdvanced Configuration Power management Interface (ACPI)-power management for modern operating systems that are capable of Operating System-directed Power Management (OSPM)-is supported to achieve the most efficient power management possible. The RTL8111EP is compatible with the IEEE 802.3u specification for 10/100Mbps Ethernet and the IEEE 802.3ab specification for 1000Mbps Ethernet. Functions such as Crossover Detection and Auto-Correction, polarity correction, adaptive equalization, cross-talk cancellation, echo cancellation, timing recovery, and error correction are implemented to provide robust transmission and reception capability at high speeds.

With state-of-the-art DSP technology and mixed-mode signal technology, the RTL8111EP offers high-speed transmission over CAT 5 UTP cable or CAT 3 UTP (10Mbps only) cable. For the RTL8111EP, the USB redirection feature is implemented by virtual USB over PCIe as defined in the EHCI Specification. The Realtek RTL8111EP-CG 10/100/1000M Ethernet controller combines a triple-speed IEEE 802.3 compatible Media Access Controller (MAC) with a triple-speed Ethernet transceiver, PCI Express bus controller, and embedded memory.

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