KSZ8081MNX/RNB 10BASE-T/100BASE-TX Physical Layer Transceiver Features Applications Single-chip 10Base-T/100Base-TX IEEE 802.3 Game console compliant Ethernet transceiver IP phone MII interface support (KSZ8081MNX) IP set-top box RMII v1.2 Interface support with a 50 MHz refer- IP TV ence clock output to MAC, and an option to input LOM a 50 MHz reference clock (KSZ8081RNB) Printer Back-to-back mode support for a 100 Mbps copper repeater MDC/MDIO management interface for PHY register configuration Programmable interrupt output LED outputs for link, activity, and speed status indication On-chip termination resistors for the differential pairs Baseline wander correction HP Auto MDI/MDI-X to reliably detect and correct straight-through and crossover cable connections with disable and enable option Auto-negotiation to automatically select the highest link-up speed (10/100 Mbps) and duplex (half/full) Power-down and power-saving modes LinkMD TDR-based cable diagnostics to identify faulty copper cabling Parametric NAND Tree support for fault detection between chip I/Os and the board HBM ESD rating (6 kV) Loopback modes for diagnostics Single 3.3V power supply with VDD I/O options for 1.8V, 2.5V, or 3.3V Built-in 1.2V regulator for core Available in 32-pin (5 mm 5 mm) QFN package 2016-2017 Microchip Technology Inc. DS00002202B-page 1KSZ8081MNX/RNB TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchi p products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors microchip.com. We welcome your feedback. Most Current Data Sheet To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: