The KSZ8041TL is a single supply 10Base-T/100Base-TX Physical Layer Transceiver, which provides MII/RMII/SMII interfaces to transmit and receive data. It utilizes a unique mixed-signal design to extend signaling distance while reducing power consumption. HP Auto MDI/MDI-X provides the most robust solution for eliminating the need to differentiate between crossover and straight-through cables. Micrel LinkMD® TDR-based cable diagnostics permit identification of faulty copper cabling. The KSZ8041TL represents a new level of features and performance and is an ideal choice of physical layer transceiver for 10Base-T/100Base-TX applications. The KSZ8041FTL has all the identical rich features of the KSZ8041TL plus 100Base-FX support for fiber and media converter applications. The KSZ8041MLL is the basic 10Base-T/100Base-TX Physical Layer Transceiver version with MII support. The KSZ8041TL and KSZ8041FTL are available in 48-pin, lead-free TQFP packages. The KSZ8041MLL is provided in the 48-pin, lead-free LQFP package.Single-chip 10Base-T/100Base-TX physical layer solution Fully compliant to IEEE 802.3u Standard Low power CMOS design, power consumption of <180mW HP auto MDI/MDI-X for reliable detection and correction for straight-through and crossover cables with disable and enable option Robust operation over standard cables LinkMD® TDR-based cable diagnostics for identification of faulty copper cabling Fiber support: 100Base-FX (KSZ8041FTL only) Back-to-Back mode support for 100Mbps repeater or media converter MII interface support RMII interface support with external 50MHz system clock (KSZ8041TL/FTL only) SMII interface support with external 125MHz system clock and 12.5MHz sync clock from MAC (KSZ8041TL/FTL only) MIIM (MDC/MDIO) management bus to 12.5MHz for rapid PHY register configuration Interrupt pin option Programmable LED outputs for link, activity and speed Power down and power saving modes Single power supply (3.3V) Built-in 1.8V regulator for core Available packages: 48-pin LQFP (KSZ8