EVB-USB82514Q36-BAS 36-Pin QFN Evaluation Board User Manual (Revision C) Copyright 2011 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 EVB-USB82514Q36-BAS 36-Pin QFN Evaluation Board User Manual (Revision C) 1 Overview The SMSC Automotive Grade USB 2.0 4-Port Hub is designed, fabricated, tested, characterized and qualified for automotive applications. The USB82514 MultiTRAK is a low-power, OEM configurable, full featured Hi-Speed USB 2.0 compliant hub contnroller IC with four down-stream ports for embedded USB solutions. The EVB-USB82514Q36-Bas 36-Pin QFN Evaluation Board demonstrates a stand alone application for the hub with all the features listed below and demonstrates the advanced power saving options and configurable port assignments. 1.1 Features Low pin count USB82514 36 - pin QFN package Hi-Speed (480 Mbits/s), Full-Speed (12 Mbits/s), and Low-Speed (1.5 Mbits/s) compatible Operation from a single voltage (+5.0 VDC, regulated) wall wart external power supply Low cost 4-layer design: two outer signal layers - power inner layers - ground inner layers Optional pull-up resistors for disabling individual downstream ports Self-powered operation Multi-transaction translator enabled Support of internal default hub configuration Single onboard +3.3 VDC regulator Single crystal clock sourc Individual port over-current sensing Individual port power control Port over-current sensing (OCS)/port power control interface with LEDs for port power indication Red LED indicator for active hub state (not suspend) EMI suppression provided by ferrite beads, selection of capacitors, and internal power/ground layers. ESD protection up to 25 kV direct contact to USB signals provided with diode bridges and common mode chokes. 1.2 General Description The EVB-USB82514Q36-BAS is a demonstration and low-cost evaluation platform featuring the USB82514 4-port, low-power Hi-Speed USB2.0 Hub with MultiTRAK technology. The platform is designed to robustly demonstrate the unique features of this device using a low-cost PCB implementation with individual port power control. TheEVB-USB82514Q36-BAS is designed for low cost, power efficient implementation of a Hi-Speed USB Hub with minimal bill of materials. Schematics, layout, and bill of materials are included minimizing the customers new product development time. Revision C of the EVB-USB82514Q36-BAS has a four-layer printed circuit board to improve coupling between power and ground to reduce EMI. Ferrite beads have been added on all connector ground and power nets. Protective diode bridges and common mode chokes were added to all USB signals. Figure 2.1 and Figure 2.2 show the top and bottom level silk screen and copper layers. Revision 1.1 (07-13-11) 2 SMSC EVB-USB82514Q36-BAS USER MANUAL