Filter
Top Products
Demo Board for 10/100 and 100BASE-FX Applications — LXD970A
Development Kit Manual 5
1.0 General Description
The LXD970A Demo Board is a versatile 10/100Mbps Ethernet media access unit (MAU) that
demonstrates all of the integral features of the LXT970A Fast Ethernet Transceiver.
The LXD970A provides a working platform for evaluation of the LXT970A Fast Ethernet
Transceiver in 10BASE-T and/or 100BASE-TX/FX applications.
The LXD970A Demo Board is configured with a single chip 10/100Mbps, IEEE 802.3u compliant,
Fast Ethernet Transceiver unit (LXD970A). The demo board is designed to plug into a transceiver
test box via a standard 40-pin MII connector. This allows system designers to test 10Mbps and
100Mbps link performance, auto-negotiation and register functionality prior to board prototyping.
The LXT970A also provides an ECL-type interface for 100BASE-FX link testing.
This document describes typical Demo Board setup procedures for a 100BASE-TX environment.
Before using the Demo Board, review the LXT970A Fast Ethernet Transceiver data sheet for
device functionality and specifications.
1.1 Features
• IEEE 802.3-compliant 10BASE-T and 100BASE-TX using a single RJ45 connection.
• Quick setup, ease of use, and clear visibility of application settings for:
— Complete system demonstration
— Individual circuit isolation
• LED indicators for major functions.
• IEEE 802.3u MII interface with extended register capability.
• Configured for single 5V supply operation.
• Standard half duplex or full duplex operation at 10 or 100 Mbps.
• 100BASE-FX fiber optic capability (unstuffed optional circuitry).