Select Language
Single-Chip 5-port 10/100Base-TX PHY Transceiver
General Description

The RTL8204B-VC-GR is a single-chip highly integrated 5-port,
10Base-T/100Base-TX Ethernet transceiver implemented in 0.16µm CMOS technology. It is currently the world’s smallest 5-PHY chip package. Flexible hardware settings are provided to configure the various operating modes of the chip.

The RTL8204B-VC-GR provides 5 separate and independent channels. Each channel consists of a SMII/SS-SMII interface-to-MAC controller, and hardware pins are used to configure the interface for SMII, or SS-SMII mode.

A PECL (Pseudo Emitter Coupled Logic) receiver accepts input from a transceiver and directly passes it to a clock recovery circuit for data/clock recovery. The chip utilizes an advanced CMOS process to meet low voltage and low power requirements. With on-chip DSP (Digital Signal Processing) technology, the chip provides excellent performance under all operating conditions.

A built-in UTP cable tester diagnoses an open/short fault in an attached cable. The RTL8204B-VC-GR also features very low power consumption. Additionally, pin-outs are designed to provide optimized direct routing, which simplifies the layout work and reduces possible EMI noise.

  • Supports 5-port integrated physical layer and transceiver for 10Base-T and 100Base-TX
  • Robust baseline wander correction for improved 100Base-TX performance
  • Complies with IEEE 802.3/802.3u
  • IEEE 802.3u compliant auto negotiation for 10/100Mbps control
  • Hardware controlled Flow control advertisement ability
  • Supports SMII/SS-SMII interfaces
  • Very low power consumption
  • Supports two power reduction methods:
    • Power saving mode (cable detection)
    • Power down mode
  • Power-on auto reset function eliminates the need for external reset circuits
  • Crossover detection and auto correction
  • Polarity detection and Auto Correction
  • Flexible serial/scan LED display modes
  • Cable tester for diagnosing open/short faults in attached cables
  • Supports 125MHz clock output
  • 128-pin QFP package
  • 1.8V/3.3V or 1.8V/2.5V power supply
  • 0.16µm, CMOS technology
  • 5 PHY for Fast Ethernet switch with twisted pair interface


Realtek Wins Three Best Choice Awards at COMPUTEX TAIPEI 2018, including a Best Choice Golden Award
Realtek Launches World’s First Single-Chip 2.5G Ethernet Controller for Multiple Applications, including Gaming Solution
Realtek PCIe GBE Family Controller Series Drivers
Realtek PCIe FE Family Controller Series Drivers
HD Audio Codec Driver
Monthly Revenue Update
About Realtek | Products | Press Room | Downloads | Investor Relations | Employment | Contact Us | FAQs | Site Map
Contact the Webmaster about any website related problems.
Best viewed at 800x600 with
IE 6.0 or Netscape 7.02 or Mozilla Firefox 1.0.6 or higher.
©2018 Realtek Semiconductor Corp. All rights reserved.