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| Features * * * * * Instant Prototype With the AT43301 Low-Cost Hub Controller Chip Reduce Design Cycle Reduce System Debugging Simplify Component Selection Avoid Typical Design Problems Overview The AT43DK301 comes with everything designers need to develop a low-cost, selfand bus-powered USB Hub. To eliminate typical prototyping hassles, a fully populated stand-alone hub is included. Designers can take the stand-alone hub from the box to the system to see the operation of the AT43301 hub controller chip. The application note explains the component selection and resolves typical problems for the designer. Low-Cost USB Hub Development Kit AT43DK301 Rev. 1186A-10/98 1 Stand-alone Hub The hub may immediately be plugged into any USB system. The only requirements are that the system has an operational USB port and that the system has the USB drivers enabled on the operating system. When connecting the hub, connect the power supply to the hub. The bus powered portion of the controller will configure without the power supply, but if devices are to be attached to the downstream ports, the power supply is required. Next, connect the upstream port to the USB connector on the computer. Windows will flash a "New Hardware Found" box indicating the "Atmel USB Hub" was detected and automatically load the generic USB hub drivers. Downstream devices can then be used on the configured hub. Tip: For your system, make sure USB is enabled in the BIOS. This may typically be done during the boot-up process by going into the CMOS setup and checking the Plug-N-Play settings. To determine if USB is properly enabled, go into the "Control Panel" and click on the "System" icon. Under the Device Manager USB will be listed if setup properly. Documentation The application note covers the latest information detailing how to design a USB hub with the AT43301 chip. Explanations of component selection, USB hub requirements, and design insights will assist designers in smoothly integrating a USB hub onto existing or new designs. By understanding the reference design, layout and component selection may be optimized for specific design constraints. Included: * Application Note * Reference Design Schematics * Bill of Materials * AT43301 Data Sheet * Self- and Bus-Powered USB Hub * USB Cable * Power Supply 2 AT43DK301 AT43DK301 3 Atmel Headquarters Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL (408) 441-0311 FAX (408) 487-2600 Atmel Operations Atmel Colorado Springs 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL (719) 576-3300 FAX (719) 540-1759 Europe Atmel U.K., Ltd. Coliseum Business Centre Riverside Way Camberley, Surrey GU15 3YL England TEL (44) 1276-686677 FAX (44) 1276-686697 Atmel Rousset Zone Industrielle 13106 Rousset Cedex, France TEL (33) 4 42 53 60 00 FAX (33) 4 42 53 60 01 Asia Atmel Asia, Ltd. Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon, Hong Kong TEL (852) 27219778 FAX (852) 27221369 Japan Atmel Japan K.K. Tonetsu Shinkawa Bldg., 9F 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581 Fax-on-Demand North America: 1-(800) 292-8635 International: 1-(408) 441-0732 literature@atmel.com Web Site http://www.atmel.com BBS 1-(408) 436-4309 (c) Atmel Corporation 1998. Atmel Cor poration makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel's Terms and Conditions located on the Company's website. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual proper ty of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical components in life suppor t devices or systems. Marks bearing (R) and/or TM are registered trademarks and trademarks of Atmel Corporation. Printed on recycled paper. 1186A-10/98/1.5M Terms and product names in this document may be trademarks of others. |
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