EVB8740 Microchip

EVB8740/EVB8741 Evaluation Board User Manual Copyright 2013 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC s standard Terms of Sale Agreement dated before the date of your order (theTerms of Sale Agreemen). The product may contain design defects or errors known as anomalies which may cause the product s functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSCs website at EVB8740/EVB8741 Evaluation Board User Manual 1 Introduction The LAN8740A/LAN8741A is a low-power, 10BASE-T/100BASE-TX physical layer (PHY) transceiver with variable I/O voltage that is compliant with the IEEE 802.3, 802.3u, and 802.3az (Energy Efficient Ethernet) standards. Energy Efficient Ethernet (EEE) support results in significant power savings during low link utilizations. The EVB8740/EVB8741 is a PHY Evaluation Board (EVB) that interfaces a Media Independent Interface (MII) MAC controller to the LAN8740A/LAN8741A Ethernet MII PHY via a standard 40-pin MII connector. The LAN8740A/LAN8741A is connected to an RJ45 Ethernet jack with integrated magnetics for 10/100 connectivity. A simplified block diagram of the EVB8740/EVB8741 can be seen in Figure 1.1. 10/100 SMSC 40-pin Ethernet MII Ethernet LAN8740A/ Connector Magnetics LAN8741A & RJ45 EVB8740/EVB8741 Figure 1.1 EVB8740/EVB8741 Block Diagram Note: Though the LAN8740A/LAN8741A supports an RMII mode of operation, the EVB8740/EVB8741 evaluation board does not support this mode. 1.1 References Concepts and material available in the following documents may be helpful when reading this document. Visit www.smsc.com for the latest documentation. SMSC LAN8740A/LAN8741A Datasheets AN 25.3 Migrating from the LAN8710A/LAN8720A to the LAN8740/LAN8741/LAN8742 AN 8.13 Suggested Magnetics SMSC LAN8740A/LAN8741A Evaluation Board Schematics Revision 1.0 (04-29-13) 2 SMSC EVB8740/EVB8741 USER MANUAL