KSZ8081MNX / KSZ8091MNX 10Base-T/100Base-TX Evaluation Board User's Guide

About this manual

This document serves as the User's Guide for the Micrel KSZ8081MNX and KSZ8091MNX Evaluation Boards. It describes the hardware features, including the RJ-45 jack, MII interface, and LED indicators, and explains how to configure the board using jumpers for strapping pins, loopback modes, and voltage selection.

The guide details the board's contents, which include schematic files, Gerber files, and IBIS models available for download. It provides specific definitions for connector pinouts, jumper configurations for PHY address and mode selection, and miscellaneous settings for VDDIO voltage and pin routing.

What's inside

• Introduction
• Board Features
• Evaluation Kit Contents
• Hardware Description
• MII Interface
• Jumper Setting & Definition
• Test Point Definition
• RJ-45 Connector
• LED Indicators
• Bill of Materials

Specifications

Frequently asked questions

What is the default PHY Address?

The default PHY Address is 00001.

How do I enable MII Back-to-Back mode?

Set CONFIG[2:0] to 110 by closing jumpers J6, J7, and J8.

What is the purpose of the manual reset button?

It allows for a quick reboot after re-configuration of strapping pins.