DESCRIPTION
The CS8904 combines four 10BASE-T Ethernet ENDECs and transceivers into a single low-cost device. Complete on-chip 10BASE-T Transceivers and filters eliminate external components, saving valuable board space and reducing cost. The CS8904 offers maximum design flexibility by providing individual control and status lines for each of the four interface ports.

FEATURES
■ Single-Chip Quad IEEE 802.3-compliant Ethernet Interface
■ 3 V and 5 V Operation
■ Full and Half Duplex Operation
■ Auto-Negotiation with Manual Override Capability
■ Four 10BASE-T Ports with Integrated Active Analog Filters
■ Automatic Polarity Detection and Correction
■ Integrated Manchester Encoder/Decoders (ENDEC)
■ Link Status LED Driver for Each Port
■ Per Port Control - Manual Duplex select (Half or Full), Auto-Negotiation select, Loopback select
■ Per Port Status - Collision detect, Carrier detect, Jabber indication, Link status, Duplex status, Auto-Negotiation status