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ADSP-21364SKSQ-ENG Arkusz danych(PDF) 9 Page - Analog Devices |
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ADSP-21364SKSQ-ENG Arkusz danych(HTML) 9 Page - Analog Devices |
9 / 52 page ADSP-21364 Preliminary Technical Data Rev. PrB | Page 9 of 52 | September 2004 • Set conditional breakpoints on registers, memory, and stacks • Trace instruction execution • Perform linear or statistical profiling of program execution • Fill, dump, and graphically plot the contents of memory • Perform source level debugging • Create custom debugger windows The VisualDSP++ IDDE lets programmers define and manage DSP software development. Its dialog boxes and property pages let programmers configure and manage all of the SHARC devel- opment tools, including the color syntax highlighting in the VisualDSP++ editor. This capability permits programmers to: • Control how the development tools process inputs and generate outputs • Maintain a one-to-one correspondence with the tool’s command line switches The VisualDSP++ Kernel (VDK) incorporates scheduling and resource management tailored specifically to address the mem- ory and timing constraints of DSP programming. These capabilities enable engineers to develop code more effectively, eliminating the need to start from the very beginning, when developing new application code. The VDK features include Threads, Critical and Unscheduled regions, Semaphores, Events, and Device flags. The VDK also supports Priority-based, Preemptive, Cooperative, and Time-Sliced scheduling approaches. In addition, the VDK was designed to be scalable. If the application does not use a specific feature, the support code for that feature is excluded from the target system. Because the VDK is a library, a developer can decide whether to use it or not. The VDK is integrated into the VisualDSP++ development environment, but can also be used via standard command line tools. When the VDK is used, the development environment assists the developer with many error-prone tasks and assists in managing system resources, automating the gen- eration of various VDK based objects, and visualizing the system state, when debugging an application that uses the VDK. VisualDSP++ Component Software Engineering (VCSE) is Analog Devices’ technology for creating, using, and reusing software components (independent modules of substantial functionality) to quickly and reliably assemble software applica- tions. Download components from the Web and drop them into the application. Publish component archives from within Visu- alDSP++. VCSE supports component implementation in C/C++ or assembly language. Use the Expert Linker to visually manipulate the placement of code and data on the embedded system. View memory utiliza- tion in a color-coded graphical form, easily move code and data to different areas of the processor or external memory with the drag of the mouse, examine run time stack and heap usage. The Expert Linker is fully compatible with the existing Linker Defi- nition File (LDF), allowing the developer to move between the graphical and textual environments. In addition to the software and hardware development tools available from Analog Devices, third parties provide a wide range of tools supporting the SHARC processor family. Hard- ware tools include SHARC processor PC plug-in cards. Third party software tools include DSP libraries, real-time operating systems, and block diagram design tools. Designing an Emulator-Compatible DSP Board (Target) The Analog Devices family of emulators are tools that every developer needs to test and debug hardware and software sys- tems. Analog Devices has supplied an IEEE 1149.1 JTAG Test Access Port (TAP) on each JTAG DSP. Nonintrusive in-circuit emulation is assured by the use of the processor’s JTAG inter- face—the emulator does not affect target system loading or timing. The emulator uses the TAP to access the internal fea- tures of the processor, allowing the developer to load code, set breakpoints, observe variables, observe memory, and examine registers. The processor must be halted to send data and com- mands, but once an operation has been completed by the emulator, the processor system is set running at full speed with no impact on system timing. To use these emulators, the target board must include a header that connects the processor’s JTAG port to the emulator. For details on target board design issues including mechanical layout, single processor connections, multiprocessor scan chains, signal buffering, signal termination, and emulator pod logic, see the EE-68: Analog Devices JTAG Emulation Technical Reference on the Analog Devices website (www.analog.com)— use site search on “EE-68.” This document is updated regularly to keep pace with improvements to emulator support. Evaluation Kit Analog Devices offers a range of EZ-KIT Lite evaluation plat- forms to use as a cost effective method to learn more about developing or prototyping applications with Analog Devices processors, platforms, and software tools. Each EZ-KIT Lite includes an evaluation board along with an evaluation suite of the VisualDSP++ development and debugging environment with the C/C++ compiler, assembler, and linker. Also included are sample application programs, power supply, and a USB cable. All evaluation versions of the software tools are limited for use only with the EZ-KIT Lite product. The USB controller on the EZ-KIT Lite board connects the board to the USB port of the user’s PC, enabling the Visu- alDSP++ evaluation suite to emulate the on-board processor in- circuit. This permits the customer to download, execute, and debug programs for the EZ-KIT Lite system. It also allows in- circuit programming of the on-board Flash device to store user- specific boot code, enabling the board to run as a standalone unit without being connected to the PC. With a full version of VisualDSP++ installed (sold separately), engineers can develop software for the EZ-KIT Lite or any cus- tom defined system. Connecting one of Analog Devices JTAG emulators to the EZ-KIT Lite board enables high-speed, non- intrusive emulation. |
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