The KSZ8721BLI is a single power supply 10/100Base-TX/FX MII Physical-layer Transceiver uses MII and RMII interfaces to transmit and receive data. It contains 10BASE-T physical medium attachment (PMA), physical medium dependent (PMD) and physical coding sub-layer (PCS) functions. It also has on-chip 10Base-T output filtering. This eliminates the need for external filters and allows a single set of line magnetics to be used to meet requirements for both 100Base-TX and 10Base-T. It is automatically configure itself for 100 or 10Mbps and full- or half-duplex operation, using an on-chip auto-negotiation algorithm. It is the ideal physical layer transceiver for 100Base-TX/10Base-T applications.
Fully compliant to IEEE 802.3u standard
Supports MII and Reduced MII (RMII)
Supports power-down and power-saving modes
Configurable through MII serial management ports or via external control pins
2.5V CMOS Design
LED outputs for link, activity, full-/half-duplex, collision and speed
Supports back-to-back, FX to TX for media converter applications
