Ksz80 Ob S4lv02 Datasheet (2026)

The primary technical reference for this device is the Microchip KSZ8081MNX/RNB Data Sheet . Key Specifications & Features

: Uses an external 25MHz fundamental-mode crystal connected across the XI and XO pins. The internal PLL multiplies this to drive the internal blocks, while the PHY outputs a synchronized 50MHz reference clock to the host MAC.

The —specifically the KSZ8081 and its close relatives like the KSZ8041 and KSZ8091 —represents a foundational line of single-chip 10/100 Ethernet physical layer (PHY) transceivers designed for low power and small footprints. ksz80 ob s4lv02 datasheet

The primary power inlet. Check this directly on both sides of the surface-mount input fuse (usually labeled F1 or FP1 ). If 12V is present on one side but not the other, the fuse is blown due to an overcurrent condition.

If you need to verify specific pin arrangements, register maps, or trace lengths for your board layout, you can share (such as 24-pin or 32-pin QFN) or your target processor model . I can then provide the precise register map configurations or layout constraint values for your design. Share public link The primary technical reference for this device is

: Digital data paths for the Reduced Media Independent Interface. CRSDV (Pin 17) : Carrier Sense / Receive Data Valid signal. RESET_N (Pin 23) : Active-low hardware reset input. Typical Application Circuit

Electrical characteristics

KSZ9031RNX - Gigabit Ethernet Transceiver with RGMII Support