KSZ8091RNB-EVAL Datasheet KSZ8091RNB-EVAL | P4-P6

KSZ8081RNB / KSZ8091RNB 10Base-T/100Base-TX Evaluation Board User’s Guide

Micrel, Inc. August 15, 2012

Rev. 1.0

4/13

List of Figures

Figure 1. KSZ8081RNB Evaluation Board ..................................................................................... 6

Figure 2. KSZ8081RNB-EVAL interfacing with KSZ8463RLI Evaluation Board ............................ 7

List of Tables

Table 1. Connector J2 - RMII Pin Definition ................................................................................... 8

Table 2. KSZ8081RNB-EVAL / KSZ8091RNB-EVAL Strapping Jumper Definition ....................... 9

Table 3. KSZ8081RNB-EVAL / KSZ8091RNB-EVAL Loopback Jumper Definition ...................... 9

Table 4. KSZ8081RNB-EVAL / KSZ8091RNB-EVAL Miscellaneous Jumper Definition ............. 10

Table 5. Strapping Pin Definitions for KSZ8081RNB-EVAL / KSZ8091RNB-EVAL Jumpers...... 11

Table 6. KSZ8081RNB-EVAL / KSZ8091RNB-EVAL Test Point Definition ................................. 12

Table 7. KSZ8081RNB / KSZ8091RNB LED Definition ............................................................... 12

KSZ8081RNB / KSZ8091RNB 10Base-T/100Base-TX Evaluation Board User’s Guide

Micrel, Inc. August 15, 2012

Rev. 1.0

5/13

1.0 Introduction

The KSZ8081RNB / KSZ8091RNB is a 10Base-T/100Base-TX Physical Layer Transceiver with

an RMII MAC interface. It utilizes a unique mixed-signal design to extend signaling distance while

reducing power consumption, and offers HP Auto MDI/MDI-X for reliable detection of and

correction for crossover and straight-through cables, eliminating the need to differentiate between

crossover and straight-through cables. The KSZ8091RNB supports Energy Efficient Ethernet

(EEE) and Wake-On-LAN (WOL), while the KSZ8081RNB does not.

The KSZ8081RNB / KSZ8091RNB comes in a 32-pin, lead-free QFN package and provides an

ideal solution for 10Base-T/100Base-TX applications that have tight PCB board space.

The KSZ8081RNB and KSZ8091RNB Eval Boards (KSZ8081RNB-EVAL and KSZ8091RNB-

EVAL) provide a convenient platform to evaluate the features of the device. All configuration pins

are accessible either by jumpers, test points or interface connectors.

2.0 Board Features

 Micrel KSZ8081RNB or KSZ8091RNB 10Base-T/100Base-TX Physical Layer

Transceiver

 RJ-45 Jack for Fast Ethernet cable interface

 HP Auto MDI/MDI-X for automatic detection and correction for straight-through and

crossover cables

 RMII (Reduced Media Independent Interface) using an MII connector to interface with a

MAC controller

 2 LED Indicators for status and activity

 Jumpers to configure strapping pins

 Manual Reset Button for quick reboot after re-configuration of strapping pins

3.0 Evaluation Kit Contents

The KSZ8081RNB and KSZ8091RNB Evaluation Kits include the following hardware:

 KSZ8081RNB or KSZ8091RNB Evaluation Board

A design package with the following collaterals that can be downloaded from Micrel’s website at

http://www.micrel.com

 KSZ8081RNB / KSZ8091RNB Eval Board Schematic (PDF and OrCAD DSN file)

 KSZ80x1 (32-QFN) Eval Board Gerber Files (PDF version included)

 KSZ8081RNB / KSZ8091RNB Eval Board User’s Guide (this document)

 KSZ8081RNB and KSZ8091RNB IBIS Models

and the KSZ8081MNX / KSZ8081RNB and KSZ8091MNX / KSZ8091RNB Datasheets which are

also available from Micrel’s website.

KSZ8081RNB / KSZ8091RNB 10Base-T/100Base-TX Evaluation Board User’s Guide

Micrel, Inc. August 15, 2012

Rev. 1.0

6/13

4.0 Hardware Description

The KSZ8081RNB-EVAL / KSZ8091RNB-EVAL (shown in Figure 1) come in a compact form

factor and plugs directly into other boards with Ethernet MACs that expose the RMII interface

through an MII connector. Configuration of the KSZ8081RNB / KSZ8091RNB is accomplished

through on-board jumper selections and/or by PHY register access via the MDC/MDIO

management pins at the MII connector.

Figure 1. KSZ8081RNB Evaluation Board

Other features include an RJ-45 Jack for Fast Ethernet cable connection, programmable LED

indicators for reporting link status and activity, and a manual reset button for quick reboot after re-

configuration of strapping pins.

The KSZ8081RNB-EVAL / KSZ8091RNB-EVAL receives +5V DC input power through its MII

connector.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P13

KSZ8091RNB-EVAL

Mfr. #:

Buy KSZ8091RNB-EVAL

Manufacturer:

Description:

Ethernet Development Tools Eval - 10/100 PHY w/EEE & WOL, 0.11u

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet

KSZ8091RNB-EVAL