MCHPKSZ8081RNAIA-TR

Overview

The KSZ8081RNAIA-TR is a single-supply 10Base-T/100Base-TX Ethernet physical layer transceiver designed for RMII interfaces. It features a highly integrated design with on-chip termination resistors and a 50 MHz reference clock output, significantly reducing the external Bill of Materials (BOM). This transceiver is optimized for industrial environments, offering high robust performance and a small 4x4mm QFN footprint.

Why Choose This Part

This PHY minimizes board space through its compact 24-pin QFN package and integrated termination resistors. It offers superior diagnostic capabilities with Microchip LinkMD TDR-based cable diagnostics to identify common cabling faults. Additionally, it supports flexible power management with four distinct low-power modes, reducing current consumption to as low as 1.36mA in shutdown.

Applications

Getting Started

To evaluate this PHY, engineers can use the KSZ8081RNA-EVAL board which breaks out the RMII interface. Design integration requires a 25 MHz crystal or external clock source, and the device is configured via standard MDC/MDIO management registers. Microchip provides reference schematics and PCB layout guidelines to ensure proper impedance matching for the differential pairs.

KSZ8081 Family

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