The Realtek RTL8169S-32 Ethernet controller combines a triple-speed IEEE 802.3 compliant Media Access Controller (MAC) with a triple-speed Ethernet transceiver, 32-bit PCI bus controller, and embedded memory. With state-of-the-art DSP technology and mixed-mode signal technology, it offers high-speed transmission over CAT 5 UTP 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.

The device supports the 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 802.3ab specification for 1000Mbps Ethernet. 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.

The RTL8169S-32 is fully compliant with Microsoft® NDIS5 (IP, TCP, UDP) Checksum and Segmentation Task-offload features, and supports IEEE 802.1Q Virtual bridged Local Area Network (VLAN). The above features contribute to lowering CPU utilization, especially benefiting performance when in operation on a network server. The devices also boost their PCI performance by supporting PCI Memory Read Line & Memory Read Multiple when transmitting, and Memory Write and Invalidate when receiving. To better qualify for server use, the RTL8169S-32 supports the PCI Dual Address Cycle (DAC) command when the assigned buffers reside at a physical memory address higher than 4 Gigabytes.

• Integrated 10/100/1000 transceiver
• Auto-Negotiation with Next page capability
• Supports PCI 2.2, 32-bit, 33/66MHz
• Supports pair swap/polarity/skew correction
• Crossover Detection & Auto-Correction
• Wake-on-LAN and remote wake-up support
• Microsoft® NDIS5 Checksum Offload (IP, TCP, UDP) and largesend offload support
• Supports Full Duplex flow control (IEEE 802.3x)
• Fully compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
• Supports IEEE 802.1Q VLAN tagging
• Serial EEPROM and/or Flash support
• 3.3V signaling, 5V PCI I/O tolerant
• Transmit/Receive FIFO (8K/64K) support
• Supports power down/link down power saving