The KSZ8041 is a single supply 10Base-T/100Base-TX Physical Layer Transceiver, which provides MII/RMII/SMII interfaces to transmit and receive data. A unique mixed signal design extends 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. The KSZ8041 represents a new level of features and performance and is an ideal choice of physical layer transceiver for 10Base-T/100Base-TX applications.

The KSZ8041RNL is an enhanced RMII version of the KSZ8041NL that does not require a 50MHz system clock. It uses a 25MHz crystal for its input reference clock and outputs a 50MHz RMII reference clock to the MAC. The KSZ8041NL and KSZ8041RNL are available in 32-pin, lead-free QFN packages. 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.

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• Single-chip 10Base-T/100Base-TX physical layer solution
• Fully compliant to IEEE 802.3u Standard
• Low power
  • Power consumption of <180mW
  • Power down and power saving modes
  • Built-in 1.8V regulator for core
• Single power supply (3.3V)
• 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
• MII interface support (KSZ8041NL only)
• RMII Interface Support
  • External 50MHz system clock (KSZ8041NL or KSZ8041TL/FTL)
  • 25MHz crystal/clock input and 50MHz reference clock output to MAC (KSZ8041RNL)
• SMII Interface Support
  • External 125MHz system clock and 12.5MHz sync clock from MAC (KSZ8041TL/FTL only)
• Fiber support 100Base-FX (KSZ8041FTL only)
• MIIM (MDC/MDIO) management bus to 6.25MHz for rapid PHY register configuration
• Interrupt pin option
• Programmable LED outputs for link, activity and speed
• ESD rating (6kV)
• Variety of Packages
  • 32-pin QFN (5mm x 5mm)
  • 48-pin LQFP (KSZ8041MLL)
  • 48-pin TQFP (KSZ8041TL/FTL)