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Usbx user guide the high-performance USB foundation software User Guide Express Logic Inc Toll Free THREADX FAX http www expresslogic com C ? - by Express Logic Inc All rights reserved This document and the associated USBX software are the sole property o

the high-performance USB foundation software User Guide Express Logic Inc Toll Free THREADX FAX http www expresslogic com C ? - by Express Logic Inc All rights reserved This document and the associated USBX software are the sole property of Express Logic Inc Each contains proprietary information of Express Logic Inc Reproduction or duplication by any means of any portion of this document without the prior written consent of Express Logic Inc is expressly forbidden Express Logic Inc reserves the right to make changes to the speci ?cations described herein at any time and without notice in order to improve design or reliability of USBX The information in this document has been carefully checked for accuracy however Express Logic Inc makes no warranty pertaining to the correctness of this document Trademarks FileX and ThreadX are registered trademarks of Express Logic Inc and USBX NetX picokernel preemption- threshold and event-chaining are trademarks of Express Logic Inc All other product and company names are trademarks or registered trademarks of their respective holders Warranty Limitations Express Logic Inc makes no warranty of any kind that the USBX products will meet the USER ? s requirements or will operate in the manner speci ?ed by the USER or that the operation of the USBX products will operate uninterrupted or error free or that any defects that may exist in the USBX products will be corrected after the warranty period Express Logic Inc makes no warranties of any kind either expressed or implied including but not limited to the implied warranties of merchantability and ?tness for a particular purpose with respect to the USBX products No oral or written information or advice given by Express Logic Inc its dealers distributors agents or employees shall create any other warranty or in any way increase the scope of this warranty and licensee may not rely on any such information or advice Part Number - Revision Express Logic Inc CContents Introduction to USBX USBX Features Product Highlights Powerful Services of USBX Multiple Host Controller Support USB Software Scheduler Complete USB Device Framework Support Easy-to-use APIs Installation and Use of USBX Host Considerations Computer Type Download Interfaces Debugging Tools Required Hard Disk Space Target Considerations Product Distribution USBX Installation Con ?guration Options Source Code Tree Initialization of USBX resources De ?nition of USB Host Controllers De ?nition of Host Classes De ?nition of USB Device Controller Troubleshooting USBX Version ID User Guide C USBX User Guide Functional Components of USBX Host Stack Execution Overview Initialization Application Interface Calls USB Host Stack APIs USB Host Class APIs Root Hub Hub Class USB Host Stack Topology Manager USB Class Binding USBX APIs Host Controller Root Hub Power Management Endpoints Transfers USB Device Framework Device Descriptors Con ?guration Descriptors Interface Descriptors Endpoint Descriptors String Descriptors Functional Descriptors USBX Device Descriptor Framework in Memory Description of USBX Host Services Device Stack for USBX Execution Overview Initialization Application Interface Calls User Guide CContents Device Framework Components of Device Framework Strings of Device Framework Languages