KSZ8721SL

KS8721BL/SL Micrel KS8721BL/SL 3.3V Single Power Supply 10/100BASE-TX/FX MII Physical Layer Transceiver www.DataSheet4U.com Rev. 1.2 General Description Operating with a 2.5V core to meet low-voltage and low-power requirements, the KS8721BL and KS8721SL are 10BASET/100BASE-TX/FX Physical Layer Transceivers that use MII and RMII interfaces to transmit and receive data. They contain 10BASE-T Physical Medium Attachment (PMA), Physical Medium Dependent (PMD), and Physical Coding Sub-layer (PCS) functions. The KS8721BL/SL also have 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. The KS8721BL/SL automatically configures 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. Features Single chip 100BASE-TX/100BASE-FX/10BASE-T physical layer solution 2.5V CMOS design; 2.5/3.3V tolerance on I/O 3.3V single power supply with built-in voltage regulator; Power consumption <340mW (including output driver current) Fully compliant to IEEE 802.3u standard Supports MII and Reduced MII (RMII) Supports 10BASE-T, 100BASE-TX, and 100BASE-FX with Far_End_Fault Detection Supports power-down and power-saving modes Configurable through MII serial management ports or via external control pins Supports auto-negotiat...