KSZ8081RNA/RND 10BASE-T/100BASE-TX PHY with RMII Support Features Target Applications Single-Chip 10BASE-T/100BASE-TX IEEE 802.3 Game Consoles Compliant Ethernet Transceiver IP Phones RMII v1.2 Interface Support with a 50 MHz Refer- IP Set-Top Boxes ence Clock Output to MAC, and an Option to IP TVs Input a 50 MHz Reference Clock LOM RMII Back-to-Back Mode Support for a 100 Mbps Printers Copper Repeater MDC/MDIO Management Interface for PHY Reg- ister Configuration Programmable Interrupt Output LED Outputs for Link and Activity Status Indica- tion On-Chip Termination Resistors for the Differential Pairs Baseline Wander Correction HP Auto MDI/MDI-X to Reliably Detect and Cor- rect Straight-Through and Crossover Cable Con- nections 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 Iden- tify Faulty Copper Cabling Parametric NAND Tree Support for Fault Detec- tion Between Chip I/Os and the Board HBM ESD Rating (6 kV) Loopback Modes for Diagnostics Single 3.3V Power Supply with V I/O Options DD for 1.8V, 2.5V, or 3.3V Built-In 1.2V Regulator for Core Available in 24-pin 4 mm x 4 mm QFN Package 2016 - 2021 Microchip Technology Inc. and its subsidiaries DS00002199F-page 1KSZ8081RNA/RND TO OUR VALUED CUSTOMERS It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip 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: