RTL8111B PDF – Integrated Gigabit Ethernet Controller

Part Number: RTL8111B

Function: Integrated Gigabit Ethernet Controller

Package: QFN 64 Pin Type

Manufacturer: Realtek Microelectronics


RTL8111B pdf datasheet


The Realtek RTL8111B Gigabit Ethernet controller combines a triple-speed IEEE 802.3 compliant Media Access Controller (MAC) with a triple-speed Ethernet transceiver, PCI Express bus controller, and embedded memory. With state-of-the-art DSP technology and mixed-mode signal technology, the RTL8111B offers high-speed transmission over CAT 5 UTP cable or CAT 3 UTP (10Mbps only) cable.

Functions such as Crossover Detection & 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.



1. Integrated 10/100/1000 transceiver

2. Auto-Negotiation with Next Page capability

3. Supports PCI Express 1.0a

4. Supports pair swap/polarity/skew correction

5. Crossover Detection & Auto-Correction

6. Wake-on-LAN and remote wake-up support

[ … ]


RTL8111B Datasheet