The RTL8201F-VB-CG, RTL8201FL-VB-CG, and RTL8201FN-VB-CG are single-chip/single-port 10/100Mbps Ethernet PHYceivers that support:• MII (Media Independent Interface)• RMII (Reduced Media Independent Interface)The RTL8201F/FL/FN implement 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). The RTL8201F/FL/FN support auto MDIX.A PECL (Pseudo 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. Applications:• DTV (Digital TV)• MAU (Media Access Unit)• CNR (Communication and Network Riser)• Game Console• Printer and Office Machine• DVD Player and Recorder• Ethernet Hub• Ethernet Switch In addition, the RTL8201F/FL/FN 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. FREE-SKY (and its e-commerce division: jotrin.com) is an authorized Realtek distributor.