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RTL8201F-VB-CG

10/100Mbps Ethernet PHY, MII/RMII, auto-negotiation, 32-QFN 5x5mm, industrial

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Manufacturer Part：

RTL8201F-VB-CG

Package：

32-VFQFN (5.0 x 5.0 x 0.9 mm)

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Description

Product Overview

The RTL8201F-VB-CG from Realtek is a single-port 10/100Mbps Ethernet PHY transceiver in a 32-pin QFN package. Supporting MII and RMII MAC interfaces with auto-negotiation and auto-MDIX, it is a widely used Ethernet PHY for embedded networking.

Key Specifications

Function Single-port 10/100 Ethernet PHY
Data Rate 10Mbps / 100Mbps
MAC Interface MII / RMII
Supply Voltage 3.3V (I/O), 1.8V (core)
Auto-Negotiation Yes (802.3u)
Package 32-VFQFN (5 x 5mm)
Operating Temperature -40°C to +85°C

Features

  • IEEE 802.3/802.3u compliant 10/100 PHY
  • MII and RMII MAC interface support
  • Auto-negotiation and auto-MDIX
  • Integrated 100Base-TX PLL and scrambler
  • Baseline wander correction
  • Industrial temperature range support

Applications

  • Embedded Ethernet connectivity for MCU/SoC
  • Industrial automation network interfaces
  • Set-top box and IPTV Ethernet port
  • Network printer and scanner
  • Home gateway LAN ports

The RTL8201F-VB-CG from Realtek is a single-port 10/100Mbps Ethernet PHY transceiver in a compact 32-pin QFN package. It provides the analog physical layer functions for 10Base-T and 100Base-TX Ethernet, interfacing with MAC controllers via MII or RMII bus. The device supports IEEE 802.3u auto-negotiation and auto-MDIX for cable polarity correction. With integrated baseline wander correction and robust receiver equalization, it maintains reliable communication over long cable runs. The industrial temperature grade (-40°C to +85°C) suits harsh environments.

The RTL8201F implements the Ethernet physical layer per IEEE 802.3. On the line side, it handles 4D-PAM5 encoding for 100Base-TX or Manchester encoding for 10Base-T. On the MAC side, it communicates via MII (4-bit, 25MHz/2.5MHz) or RMII (2-bit, 50MHz). Auto-negotiation uses Fast Link Pulse bursts to advertise capabilities and negotiate the highest common speed/duplex. Auto-MDIX detects crossover and swaps TX/RX pairs internally. The integrated DSP performs echo cancellation, equalization, and baseline wander correction.

Pin Group Name Type Function
1-8 TXD/TXEN/TXCLK I/O MII transmit data and control
9-16 RXD/RXDV/RXCLK I/O MII receive data and control
17-20 MDIO/MDC I/O Management interface (SMI)
21-24 TXP/TXN Analog 100Base-TX transmit pair
25-28 RXP/RXN Analog Receive pair from magnetics
29-32 VDD/GND/CFG Power Power, ground, configuration
  • Embedded MCU Ethernet (STM32 + RTL8201F)
  • Industrial PLC and HMI Ethernet ports
  • Set-top box and smart TV LAN interface
  • Network printer and scanner connectivity
  • Home router 10/100 LAN ports
Manufacturer Part Number Package Notes
Microchip KSZ8041NLIA 32-QFN 10/100 PHY, RMII
TI DP83848JVVB 48-LQFP 10/100 PHY, MII/RMII
Realtek RTL8211F-CG 32-QFN Gigabit PHY upgrade
ADI DP83825I 24-QFN 10/100 PHY, RMII, small
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Quality Assurance

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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