KSZ8091MNX/RNB 10BASE-T/100BASE-TX Physical Layer Transceiver Features Target Applications Single-Chip 10BASE-T/100BASE-TX IEEE 802.3 Game Consoles Compliant Ethernet Transceiver IP Phones MII Interface Support (KSZ8091MNX) IP Set-Top Boxes RMII v1.2 interface support with a 50 MHz refer- IP TVs ence clock output to MAC, and an option to input LOM a 50 MHz reference clock (KSZ8091RNB) Printers Back-to-Back Mode Support for a 100 Mbps Cop- per Repeater MDC/MDIO Management Interface for PHY Reg- ister Configuration Programmable Interrupt Output LED Outputs for Link and Activity Status Indica- tion, plus speed indication for KSZ8091RNB 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) Energy Efficient Ethernet (EEE) Support with Low-Power Idle (LPI) Mode and Clock Stoppage (MII Version Only) for 100BASE-TX and Transmit Amplitude Reduction with 10BASE-Te Option Wake-on-LAN (WOL) Support with Either Magic Packet, Link Status Change, or Robust Custom- Packet Detection HBM ESD Rating (6 kV) 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 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 32-pin 5 mm x 5 mm QFN Package 2016-2019 Microchip Technology Inc. 1DS00002275B-page KSZ8091MNX/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 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: