The KSZ8051 is an AEC-Q100 standard qualified single-supply 10BASE-T/100BASE-TX Ethernet physical-layer transceiver.
The KSZ8051 is a highly integrated PHY solution. It reduces board cost and simplifies board layout by using on-chip termination resistors for the differential pairs and by integrating a low-noise regulator to supply the 1.2V core.
The KSZ8051MNL offers the Media Independent Interface (MII) and the KSZ8051RNL offers the Reduced Media Independent Interface (RMII) for direct connection with MII-/RMII-compliant Ethernet MAC processors and switches.
A 25 MHz crystal is used to generate all required clocks, including the 50 MHz RMII reference clock output for the KSZ8051RNL
The KSZ8051 provides diagnostic features to facilitate system bring-up and debugging in production testing and in product deployment. Parametric NAND tree support enables fault detection between KSZ8051 I/Os and the board. Microchip LinkMD® TDR-based cable diagnostics identify faulty copper cabling.
The KSZ8051MNL and KSZ8051RNL are available in 32-pin, lead-free QFN packages.