Main features - Single-chip 10BASE-T/100BASE-TX/100BASEFX physical layer solution - Fully compliant with IEEE 802.3u standard - CMOS design with low power consumption, power consumption of 180 mW - HP Auto MDI/MDI-X for reliable detection and correction for straight-through and crossover Cable with disable and enable option - Robust operation with standard cables - LinkMD® TDR-based cable diagnostics to identify faulty copper cabling - Shutdown and power saving mode - Fibre-optic support: 100BASE-FX (KSZ8041FTL only) - Support for back-to-back mode at 100 Mbps Repeater or media converter - MII interface support - RMII interface support with external 50-MHz system clock (KSZ8041TL/FTL only) - SMII interface support with external 125-MHz system clock and 12.5-MHz synchronisation clock from the MAC (KSZ8041TL/FTL only) - MIIM (MDC/MDIO) management bus up to 12.5 MHz for fast PHY register configuration - Interrupt pin option - Programmable LED outputs for link, activity and speed - Single power supply (3.3 V) - Built-in 1.8-V controller for Core