FTM Board Club

The KSZ8081MNX / KSZ8091MNX is a 10Base-T/100Base-TX Physical Layer Transceiver with an MII MAC interface.

It utilizes a unique mixed-signal design to extend signaling distance while reducing power consumption, and offers HP Auto MDI/MDI-X for reliable detection of and correction for crossover and straight-through cables, eliminating the need to differentiate between crossover and straight-through cables. The KSZ8091MNX has all the identical rich features of the KSZ8081MNX plus support for Energy Efficient Ethernet (EEE) and Wake-on-LAN (WOL). The KSZ8081MNX / KSZ8091MNX come in a 32-pin, lead-free QFN package and provides an ideal solution for 10Base-T/100Base-TX applications that have tight PCB board space. The KSZ8081MNX and KSZ8091MNX Eval Boards (KSZ8081MNX-EVAL and KSZ8091MNXEVAL) provide a convenient platform to evaluate the features of the device. All configuration pins are accessible either by jumpers, test points or interface connectors.


• KSZ8081MNX or KSZ8091MNX 10Base-T/100Base-TX Physical Layer Transceiver

• RJ-45 Jack for Fast Ethernet cable interface

• HP Auto MDI/MDI-X for automatic detection and correction for straight-through and crossover cables • MII (Media Independent Interface) Connector to interface with a MAC controller

• 2 LED Indicators for status and activity • Jumpers to configure strapping pins

• Manual Reset Button for quick reboot after re-configuration of strapping pins