RTL8201BL

2002-03-29

Rev.1.2

2

1. Features

The Realtek RTL8201BL is a Fast Ethernet Phyceiver with selectable MII or SNI interface to the MAC chip. It provides the

following features:

Supports MII/7-wire SNI (Serial Network

Interface) interface

Supports 10/100Mbps operation

Supports half/full duplex operation

Support of twisted pair or Fiber mode output

IEEE 802.3/802.3u compliant

Supports IEEE 802.3u clause 28 auto negotiation

Supports power down mode

Supports operation under Link Down Power

Saving mode

Supports Base Line Winder (BLW) compensation

Supports repeater mode

Speed/duplex/auto negotiation adjustable

3.3V operation with 5V IO signal tolerance

Low operation power consumption and only need

single supply 3.3V

Adaptive Equalization

25MHz crystal/oscillator as clock source

Multiple network status LED support

Flow control ability support to co-work with

MAC (by MDC/MDIO)

48 pin LQFP package

2. General Description

The RTL8201BL 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 interface is supported to connect with an external 100Base-FX fiber optical

transceiver. The chip is fabricated with an advanced CMOS process to meet low voltage and low power requirements.

The RTL8201BL can be used as a Network Interface Adapter, MAU, CNR, ACR, Ethernet Hub, Ethernet Switch. Additionally,

it can be used in any embedded system with an Ethernet MAC that needs a twisted pair physical connection or fiber PECL

interface to external 100Base-FX optical transceiver module.