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© 2025 Microchip Technology Inc. and its subsidiaries

DS50004037A - 1

Introducon

This document is designed to help system integrators follow a systematic debugging process. It aims to

eciently identify the problem's source and gather the necessary information to nd an suitable solution. The

information contained within the document can be used to root cause and resolve issues with the Microchip

KSZ8081MNX. In the event that a root cause or solution cannot be identied, this document can be used as a

guide to prepare the necessary information for submitting a Microchip support case request.

This document covers the following topics:

Problem Statement Questionnaire

Data Logging

Debug Flow for Problem Isolation

This document also includes the following supplemental information:

Low Level Management Techniques

PHY Link Registers and Testing

Additional resources which are recommended are:

•KSZ8081MNX

Datasheet

•KSZ8081/KSZ8091 Silicon Errata and Datasheet Clarication

•KSZ8081MNX Schematic Checklist

•KSZ8081MNX Evaluation Board

•KSZ8081MNX Design Package

•AN1120- Ethernet Theory of Operation

•PCB Design Guidelines for QFN and DQFN Packages

•Magnetics Selection Guide

•Ethernet Compliance Testing

•Capacitive Coupling Ethernet Transceivers without Using Transformers

•Microchip University - Ethernet Fundamentals

KSZ8081MNX Issue Triage Guide

Produktspecifikationer