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With the Altera Nios II embedded processor, you as the system designercan accelerate time-critical software algorithms by adding custominstructions to the Nios II processor instruction set. Using custominstructions, you can reduce a complex sequence of standard instructionsto a single instruction implemented in hardware. You can use this featurefor a variety of applications, for example, to optimize software innerloops for digital signal processing (DSP), packet header processing, andcomputation-intensive applications. The Nios II configuration wizard,part of the Quartus® II software’s SOPC Builder, provides a graphicaluser interface (GUI) used to add up to 256 custom instructions to theNios II processor
標(biāo)簽：
NIOSII
用戶(hù)
定制
指令
上傳時(shí)間：
2013-11-07
上傳用戶(hù)：swing
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Abstract: The process of designing a radio system can be complex and often involves many project tradeoffs. Witha little insight, balancing these various characteristics can make the job of designing a radio system easier. Thistutorial explores these tradeoffs and provides details to consider for various radio applications. With a focus on theindustrial, scientific, medical (ISM) bands, the subjects of frequency selection, one-way versus two-way systems,modulation techniques, cost, antenna options, power-supply influences, effects on range, and protocol selectionare explored.
標(biāo)簽：
無(wú)線(xiàn)
上傳時(shí)間：
2013-12-13
上傳用戶(hù)：eastgan
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Abstract: This application note describes system-level characterization and modeling techniques for radio frequency (RF) and microwavesubsystem components. It illustrates their use in a mixed-signal, mixed-mode system-level simulation. The simulation uses an RF transmitterwith digital predistortion (DPD) as an example system. Details of this complex system and performance data are presented.
標(biāo)簽：
射頻
仿真
微波系統(tǒng)
建模
上傳時(shí)間：
2013-12-18
上傳用戶(hù)：onewq
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Radio frequency (RF) can be a complex subject to navigate, but it does not have to be. If you are just getting started with radios or maybe you cannot find that old reference book about antenna aperture, this guide can help. It is intended to provide a basic understanding of RF technology, as well act as a quick reference for those who “know their stuff” but may be looking to brush up on that one niche term that they never quite understood. This document is also a useful reference for Maxim’s products and data sheets, an index to deeper analysis found in our application notes, and a general reference for all things RF.
標(biāo)簽：
射頻
基礎(chǔ)知識(shí)
上傳時(shí)間：
2013-10-23
上傳用戶(hù)：685
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Radio frequency (RF) can be a complex subject to navigate, but it does not have to be. If you are just getting started with radios or maybe you cannot find that old reference book about antenna aperture, this guide can help. It is intended to provide a basic understanding of RF technology, as well act as a quick reference for those who “know their stuff” but may be looking to brush up on that one niche term that they never quite understood. This document is also a useful reference for Maxim’s products and data sheets, an index to deeper analysis found in our application notes, and a general reference for all things RF.
標(biāo)簽：
無(wú)線(xiàn)技術(shù)
上傳時(shí)間：
2013-10-08
上傳用戶(hù)：kinochen
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This book is about the digital logic design of microprocessors. It is intended to provide both an understanding of the basic principles of digital logic design, and how these fundamental principles are applied in the building of complex microprocessor circuits using current technologies.
標(biāo)簽：
VHDL
數(shù)字邏輯
微處理器
上傳時(shí)間：
2013-10-14
上傳用戶(hù)：leyesome
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Abstract: Using a wafer-level package (WLP) can reduce the overall size and cost of your solution.However when using a WLP IC, the printed circuit board (PCB) layout can become more complex and, ifnot carefully planned, result in an unreliable design. This article presents some PCB designconsiderations and general recommendations for choosing a 0.4mm- or 0.5mm-pitch WLP for yourapplication.
標(biāo)簽：
Considerations
Guidelines
and
Design
上傳時(shí)間：
2013-11-09
上傳用戶(hù)：ls530720646
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Nios II軟件構(gòu)建工具入門(mén)
The Nios® II Software Build Tools (SBT) allows you to construct a wide variety of
complex embedded software systems using a command-line interface. From this
interface, you can execute Software Built Tools command utilities, and use scripts
other tools) to combine the command utilities in many useful ways.
This chapter introduces you to project creation with the SBT at the command line
This chapter includes the following sections:
■ “Advantages of Command-Line Software Development”
■ “Outline of the Nios II SBT Command-Line Interface”
■ “Getting Started in the SBT Command Line”
■ “Software Build Tools Scripting Basics” on page 3–8
標(biāo)簽：
Nios
軟件
上傳時(shí)間：
2013-11-15
上傳用戶(hù)：nanxia
-
Nios II定制指令用戶(hù)指南：With the Altera Nios II embedded processor, you as the system designer can accelerate time-critical software algorithms by adding custom instructions to the Nios II processor instruction set. Using custom
instructions, you can reduce a complex sequence of standard instructions to a single instruction implemented in hardware. You can use this feature for a variety of applications, for example, to optimize software inner
loops for digital signal processing (DSP), packet header processing, and computation-intensive applications. The Nios II configuration wizard,part of the Quartus® II software’s SOPC Builder, provides a graphical user interface (GUI) used to add up to 256 custom instructions to the Nios II processor.
The custom instruction logic connects directly to the Nios II arithmetic logic unit (ALU) as shown in Figure 1–1.
標(biāo)簽：
Nios
定制
指令
用戶(hù)
上傳時(shí)間：
2013-10-12
上傳用戶(hù)：kang1923
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This introduction covers the fundamentals of VHDL as applied to Complex ProgrammableLogic Devices (CPLDs). Specifically included are those design practices that translate soundlyto CPLDs, permitting designers to use the best features of this powerful language to extractoptimum performance for CPLD designs.
標(biāo)簽：
XAPP
CPLD
VHDL
105
上傳時(shí)間：
2013-11-21
上傳用戶(hù)：gtf1207
