General Description
The RTL8201(L) is a single-port Phyceiver with an MII (Media Independent 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). It is fabricated with an advanced CMOS process to meet low voltage and low power requirements.
The RTL8201(L) 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.

FEATUREs
The Realtek RTL8201(L) is a Fast Ethernet Phyceiver with MII interface to the MAC chip. It provides the following features:
● Supports MII interface
● Supports 10/100Mbps operation
● Supports half/full duplex operation
● 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 repeater mode
● Speed/duplex/auto negotiation adjustable
● 3.3V operation with 5V signal tolerance
● Low operation power consumption
● Adaptive Equalization
● 25MHz crystal/oscillator as clock source
● Multiple network status LED support
● Supports 7-wire SNI (Serial Network Interface) interface
● Flow control ability support to co-work with MAC (by MDC/MDIO)
● 48-pin LQFP package