Spezifikationen
RTL8211FI‑CG is an industrial-grade single-port 10/100/1000BASE-T Gigabit Ethernet PHY transceiver from Realtek Semiconductor, integrating analog front-end, DSP signal processing, clock recovery and management circuits to convert signals between MAC controllers and twisted-pair Ethernet cables.
Part Number Definition
RTL8211FI stands for industrial temperature version of RTL8211F series PHY chip with wide temperature range and enhanced anti-interference performance. CG refers to lead-free QFN-40 surface mount package with exposed thermal pad, factory default tape-and-reel packaging for automated SMT assembly.
Core Protocol and Interface Specifications
It fully conforms to IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX, IEEE 802.3ab 1000BASE-T and IEEE 802.3az Energy Efficient Ethernet standards. The MAC side adopts RGMII reduced pin interface, supporting configurable signal voltage at 3.3V, 2.5V, 1.8V and 1.5V to match various main control chips. All network ports support automatic speed and duplex negotiation, and built-in Auto-MDI/MDIX automatic cable pin identification and correction without distinguishing straight-through or crossover cables. On-chip DSP implements adaptive equalization, crosstalk suppression, echo cancellation and polarity correction to guarantee stable 100-meter transmission over Cat5e cables. Standard MDC/MDIO management bus is reserved for register configuration and status reading by upper-layer master chips.
Built-in Functional Features
It supports IEEE 802.3x full-duplex flow control and half-duplex backpressure congestion control to avoid packet loss under heavy network load. The chip integrates remote wake-on-LAN function to support magic packet triggered device startup. Multiple power-saving modes including link-down power off and idle energy saving reduce power consumption during non-transmission periods. Internal switching power regulator and multi-channel LDO simplify peripheral power design and lower power ripple. Three dedicated LED pins are provided to indicate link status, connection speed and data transmission activity. It can output stable 125MHz reference clock to supply clock signal for external MAC processors.
Power Supply and Clock Design
The main input voltage is 3.3V, and internal power management modules generate core and analog working voltages. Only one external 25MHz crystal oscillator is required as the reference clock source, with minimal peripheral passive components needed for normal operation. The chip is fabricated with 55nm low-power process to cut static power consumption.
Package and Mechanical Information
Package type is 40-pin QFN quad flat no-leads package with exposed thermal pad. Moisture Sensitivity Level is MSL 3, and reflow soldering must be finished within 168 hours after opening vacuum moisture-proof packaging. The bottom exposed pad improves heat dissipation during long-time continuous data transmission and prevents overheating under high load.
Environmental and Compliance Standards
Industrial wide operating temperature ranges from -40 ℃ to +85 ℃, adapting to outdoor equipment and field industrial control devices with extreme temperature fluctuation. The component is fully lead-free and complies with RoHS and REACH regulations without restricted hazardous substances. Optimized EMC and ESD protection enhance resistance to surge and electromagnetic interference in complex industrial environments.
Typische Anwendungsszenarien
Industrial control motherboards, PLC equipment and field data acquisition terminal wired Ethernet interfaces IP cameras, NVR video recorders and monitoring front-end network access modules Embedded single-board computers, protocol conversion gateways and intelligent IoT gateway wired network circuits Smart meters, access control hosts and remote data transmission terminals Mini Gigabit switches, router expansion network ports and digital television, printer and multimedia device network modules
LXB Semicon supplies original Realtek RTL8211FI‑CG industrial grade Gigabit Ethernet PHY transceiver IC
