KSZ8051MNL/RNL 10BASE-T/100BASE-TX Automotive Physical Layer Transceiver Features Target Applications Single-Chip 10BASE-T/100BASE-TX IEEE 802.3 Automotive In-Vehicle Networking Compliant Ethernet Transceiver AEC-Q100 Qualified for Automotive Applications MII Interface Support (KSZ8051MNL) RMII v1.2 Interface Support with a 50 MHz Refer- ence Clock Output to MAC, and an Option to Input a 50 MHz Reference Clock (KSZ8051RNL) 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, 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 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 TDR-Based Cable Diagnostics to Iden- LinkMD 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 2018 Microchip Technology Inc. DS00002310B-page 1KSZ8051MNL/RNL 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: