Select Language
Single-Port 10/100M Fast Ethernet PHYceiver
General Description

The RTL8201CL is a single-port PHYceiver with an MII (Media Independent Interface)/SNI (Serial Network Interface). It implements all 10/100M Ethernet Physical-layer functions including the Physical Coding Sublayer (PCS), Physical Medium Attachment (PMA), Twisted Pair Physical Medium Dependent sublayer (TP-PMD), 10Base-Tx Encoder/Decoder, and Twisted Pair Media Access Unit (TPMAU).

A PECL (Positive Emitter Coupled Logic) interface is supported to connect with an external 100Base-FX fiber optical transceiver. 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.

The RTL8201CL can be used for applications such as those for a Network Interface Adapter, MAU (Media Access Unit), CNR (Communication and Network Riser), ACR (Advanced Communications Riser), an Ethernet hub, and an Ethernet switch. In addition, it can be used in any embedded system with an Ethernet MAC that needs a UTP physical connection or Fiber PECL interface to an external 100Base-FX optical transceiver module.

  • Supports MII and 7-wire SNI (Serial Network Interface)
  • 10/100Mbps operation
  • Full/half duplex operation
  • Twisted pair or fiber mode output
  • Supports power down mode
  • Supports operation under Link Down Power Saving mode
  • Supports Base Line Wander (BLW) compensation
  • Supports repeater mode
  • Adaptive Equalization
  • Network status LEDs
  • Flow control support
  • 25MHz crystal/oscillator as clock source
  • IEEE 802.3/802.3u compliant, including Auto-Negotiation
  • 1.8V/3.3V operation with 3.3V IO signal tolerance
  • Low dual-power supply, 1.8V and 3.3V; 1.8V is generated by an internal regulator
  • 0.18µm CMOS process
  • 48-pin LQFP package
  • Network interface adapters and Ethernet hubs/switches
  • Ethernet MAC-embedded systems that need twisted-pair physical connections, such as those for ADSL/cable modem routers and IA gateways


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.