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General Description

The KSZ8051 is an AEC-Q100 standard qualified single-supply 10BASE-T/100BASE-TX Ethernet physical-layer transceiver.

The KSZ8051 is a highly integrated PHY solution. It reduces board cost and simplifies board layout by using on-chip termination resistors for the differential pairs and by integrating a low-noise regulator to supply the 1.2V core.

The KSZ8051MNL offers the Media Independent Interface (MII) and the KSZ8051RNL offers the Reduced Media Independent Interface (RMII) for direct connection with MII-/RMII-compliant Ethernet MAC processors and switches.

Features

? Single-Chip 10BASE-T/100BASE-TX IEEE 802.3 Compliant Ethernet Transceiver

? AEC-Q100 Qualified for Automotive Applications

? MII Interface Support (KSZ8051MNL)

? RMII v1.2 Interface Support with a 50 MHz Reference Clock Output to MAC, and an Option to Input a 50 MHz Reference Clock (KSZ8051RNL)

? 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

? 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 x 5 mm QFN Package

Target Applications

? Automotive In-Vehicle Networking