By Phil Lapsley, Jeff Bier, Amit Shoham, Edward A. Lee
This state-of-the-art, sensible consultant brings you an self sustaining, entire advent to DSP processor expertise. a radical educational and assessment of DSP architectures, this ebook contains a huge diversity of todays product choices in examples that illustrate DSP good points and features. This e-book is mainly worthwhile to digital platforms designers, processor architects, engineering managers, and product planners.From the again CoverElectrical Engineering/Signal Processing DSP Processor basics Architectures and contours A quantity within the IEEE Press sequence on sign Processing Jerry D. Gilbson, sequence Editor because the emergence of the 1st commercially winning electronic sign processors within the early Eighties, the programmable DSP industry has burgeoned. Designers can now choose from an enormous array of specialised processors with robust signal-processing services. DSP Processor basics offers an autonomous, entire advent to DSP processor expertise. a radical instructional and evaluation of DSP architectures, this booklet features a wide diversity of today’s product choices in examples that illustrate DSP positive aspects and functions. This publication is mainly beneficial to digital platforms designers, processor architects, engineering managers, and product planners. subject matters coated include:•Numeric formats•Data paths•Memory structures•Instruction sets•Execution control•Pipelining•On-chip peripherals•On-chip debugging facilities•Clocking options•And more!sharingmatrix.com
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Additional info for DSP Processor Fundamentals: Architectures and Features
Chapter 2 DSP Processors, Embodiments, and Alternatives There is a trend among both PC and workstation manufacturers to add more DSP capabilities to their products, both through on-board nsp processors and through the addition of peripherals like analog-to-digital and digital-to-analog converters and telephone line interfaces that support nsp applications like modems, speech recognition, and music synthesis. As these kinds of resources become increasingly prevalent in pes and workstations, more opportunities will open up for software-only nsp products.
With saturation, the result is 99 (the largest positive number that we can represent with two digits), which is only 16 away from the correct result. Because it often is not practical or desirable to scale signals to eliminate the possibility of overflow, saturation arithmetic is very useful. Fixed-point DSP processors generally provide special hardware for saturation arithmetic, so that it occurs automatically (perhaps under the control of a mode register) or with the execution of a special instruction.
Extended precision can be obtained in two ways. First, many fixed- and floating-point processors provide built-in support for an extended precision format for operations taking place exclusively within the data path of the processor (see Chapter 4 for a discussion of data paths). This means that as long as a series of arithmetic operations is carried out exclusively within the processor's data path and does not involve transferring intermediate results to and from memory, a data word width larger than the native data word width is available.