Overview USB Host PC 8x930 Software Development & Debugging PC 8x930 Software Development Tools 8x930 Evaluation Board Applications ICE (In-Circuit Emulators) USB Protocol Analyzer

The 8x930 microcontroller is based on the MCS®251 architecture and is a USB compliant peripheral controller chip. This integrated controller coupled with development tools offers a fast design ramp to a wide range of USB PC Peripherals. Intel is working closely with a number of leading Third Party Vendors (TPVs) to provide a comprehensive set of hardware and software tools, and a complete interoperable tool chain for cross development for the 8x930 family. For more information on TPVs see USB Development Tools. The ultimate lab set up is an example of a complete USB development environment that is comprised of the tools available from Intel or Third Party Vendors. Engineering teams may want to use this model to shorten their development cycle.

A host system is a USB compliant PC host platform. The following host systems are offered by the companies listed below. IBM - Model number 2176C6Y or higher Compaq - Model number 4762 or higher Toshiba - Model name Infinia Siemens - Model Scenic Pro C5 Sony - Model number/name, PCV70, VAIO Contact your local PC distributor for price and availability of these systems. Microsoft Corporation has developed beta versions of USB compliant software drivers. For more information contact Microsoft for the latest versions of these drivers. As a convenience to its customers, Intel is providing the following link to register with Microsoft. Microsoft Corporation is independent of Intel, and Intel does not warrant and cannot be responsible for their material. beta@microsoft.com. The Universal Host Controller Interface (UHCI) Design Guide is available for hardware designers to aid in the implementation of the USB host controller. The design guide describes the register level interface within Intel's USB host controller as well as the software data structure needed to control the bus. To register for future updates of the Design Guide, send your name, company name, mailing address, email address, and phone number to PCI_Reply@ccm.fm.intel.com. Intel also provides the following software to complement the USB Host PC that can be accessed by contacting your local Intel sales office: Sample WDM USB Device Driver The sample WDM USB device driver provides a generic template which can be modified to suit customer requirements. The sample driver provides a documented API interface (DeviceIOCTL) for applications to communicate with USB devices. The goal of including the device driver is to provide Intel customers a jump start path to their USB peripheral firmware, H/W debug, and integration. The sample driver does basic device enumeration, that is, obtains the device and configuration descriptor from a device. The descriptor information is exported to the application when appropriate API calls are made. The sample driver also supports all the different data pipes (Control, Bulk, Interrupt, and Isochronous). Applications can use the data transfer API's to perform USB peripheral firmware debug. Sample USB Application The sample USB application complements the sample WDM USB device driver and is a template GUI/C++ application that can be modified to suit customer requirements. For example, the sample application can be modified to perform long term stress testing of their USB peripheral. The sample application uses the API defined and exported by the sample device driver. USB Single Step Transaction Debugger The USB Single Step Transaction Debugger (USBSSTD) is a simple, low-level tool for exercising USB peripherals. It does not require the sample WDM USB device driver or sample USB application. USBSSTD is targeted to the needs of initial integration of a new USB peripheral. During initial hardware integration, it is advantageous to have complete control and visibility into the USB subsystem. USBSSTD provides this level of control and visibility. It provides an easy to use, graphical interface which allows the user to construct, submit, and evaluate the status of individual USB transactions. USBSSTD accommodates interactions with Host Controllers which conform to the Universal Host Controller Interface (UHCI). Although the granularity of control is per-transaction, the tool provides a number of aids to help the user construct both individual, and sequences of transfers. These aids help the user to quickly setup and issue complete USB message traffic, or simply issue sequences of USB input or output transactions. USBSSTD works independently of the USB software stack. It interacts directly with the host controller and the scheduler, to issue transfers and send/receive data with the addressed USB device. The user should take care when using this tool if the USB subsystem has a number of active devices.

In addition to the USB Host PC, a second PC is recommended for debugging purposes. This PC is used to develop programs that will run on the 8x930 USB chip. Software should be loaded on it for these purposes. Users need to have a C cross compiler/assembler to generate code for the 8x930 and a debugger environment that allows the user to load code to the evaluation board environment. This PC will also be used to run the ICE (in-circuit emulator) debugger software and will contain boards related to ICE. It will also be used to run the software related to protocol analyzers and contain any ISA or PCI boards required to run the bus analyzer.

Several Third Party Vendors offer software suites to allow programmers to write code for the 8x930 USB chip. Each software suite comprises a C compiler, assembler, linker/locator and debugger/simulator tools. These are usually complemented by a windows based development environment along with editor, project, and library management tools. Executable code is generated in either IEEE695, the Intel OMF format or Intel Hexadecimal format. The 8x930Ax USB Controller may be programmed using either the MCS®51 instruction set (to protect the user's software investment) or the MCS®251 microcontroller instruction set (for optimized performance).

The evaluation board is built around the 8x930 and is available as part of a USB evaluation kit from Intel. The kit includes ApBuilder, code examples, compiler, user manuals, and data sheets. The board has a resident debug monitor (RISM) in EPROM that interfaces to PC based debuggers from leading TPVs. The 8x930Ax USB controller is supported on an adapter board or daughter card that plugs on to the evaluation board. The evaluation board supports one upstream USB port and three downstream USB ports for future USB hub support. To order an evaluation kit, order number: USB930EVALKIT, please contact your local Intel sales office.

An application represents any type of computer peripheral connected to the USB host through a USB connection. The application can be connected to the evaluation board through the I/O expansion connector on the side of the board. The evaluation board can be used as a peripheral by itself if only software testing is needed and no mechanical connection is required. Application or demo code may be developed using the software development tools and then tested on the evaluation hardware board by either downloading via the PC COM port to the serial port on the board, or directly by programming the code in EPROM or FLASH and plugging the device on the board. A sample USB application is also available from Intel.

Emulation tools range from simple ROM emulation tools all the way to full blown in-circuit emulators. To communicate with in-circuit emulators, software tools generate code in the Intel Object Module Format. Intel works with hardware and software tools vendors to help provide tools interoperability.

USB protocol debugging is facilitated by protocol analyzers. Protocol analyzers are meant to monitor bus activities and record all types of transactions that are going back and forth through the USB cable. The recorded data allows visual insight on what is going through the USB cable. Being able to scrutinize the recorded data provides an excellent way of debugging USB transaction flow. A USB packetized traffic generator is also available from TPVs. This tool allows stress testing of USB peripherals and enables debugging of the USB peripheral under adverse USB traffic on the bus.

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