Highly Integrated Ethernet Transceiver

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The Realtek RTL8211FS-CG is a highly integrated Ethernet transceiver that complies with 10Base-T, 100Base-TX, and 1000Base-T IEEE 802.3 standards. It provides all the necessary physical layer functions to transmit and receive Ethernet packets over CAT.5 UTP cable. The RTL8211FSI and RTL8211FSI-VS are manufactured to industrial grade standards.

The RTL8211FS (I) (-VS) uses state-of-the-art DSP technology and an Analog Front End (AFE) to enable high-speed data transmission and reception over UTP cable. Functions such as Crossover Detection & Auto-Correction, polarity correction, adaptive equalization, cross-talk cancellation, echo cancellation, timing recovery, and error correction are implemented in the RTL8211FS(I)(-VSI) to provide robust transmission and reception capabilities at 10Mbps, 100Mbps, or 1000Mbps.

Data transfer between MAC and PHY is via the Reduced Gigabit Media Independent Interface (RGMII) or Serial Gigabit Media Interface (SGMII) for 1000Base-T, 10Base-T, and 100Base-TX. The RTL8211FFS(I)(-VS) supports various RGMII signaling voltages, including 3.3, 2.5, 1.8, and 1.5V.

System Applications:
• DTV (Digital TV)
• MAU (Media Access Unit)
• CNR (Communication and Network Riser)
• Game Console
• Printer and Office Machine
• DVD Player and Recorder
• Ethernet Hub
• Ethernet Switch

In addition, the RTL8211FS(I)(-VS) can be used in any embedded system with an Ethernet MAC that needs a UTP physical connection.

Symmetry Electronics is an authorized Realtek distributor.


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1000Base-T IEEE 802.3ab Compliant
100Base-TX IEEE 802.3u Compliant
10Base-T IEEE 802.3 Compliant
Supports RGMII
Supports IEEE 802.3az-2010 (Energy Efficient Ethernet)
Built-in Wake-on-LAN (WOL)
Supports Interrupt function
Supports Parallel Detection
Crossover Detection & Auto-Correction
Automatic polarity correction
Supports PHYRSTB core power Turn-Off
Baseline Wander Correction
Supports 120m for CAT.5 cable in 1000Base-T
Selectable 3.3/2.5/1.8/1.5V signaling for RGMII
Supports 25MHz external crystal or OSC
Provides 125MHz clock source for MAC
Provides 3 network status LEDs
Supports Link Down power saving
Green Ethernet (1000/100Mbps mode only)
Built-in Switching Regulator and LDO
48-pin QFN Green Package
55 nm process with ultra-low power consumption
Industrial grade manufacturing process RTL8211FI

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