Adaptive Digital Circuits for Power-Performance Range beyond Wide Voltage Scaling

From the Clock Path to the Data Path

By: Longyang Lin, Saurabh Jain, Massimo Alioto

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Hardcover | 28 February 2020

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Hardcover
184 Pages

Dimensions(cm)
23.5 x 15.5 x 1.27

Hardcover

$139.00

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This book offers the first comprehensive coverage of digital design techniques that expand the power-performance tradeoff well beyond allowed by conventional wide voltage scaling. Expanded power-performance range is indeed well-known to be required for next-generation always-on integrated systems with lower power in the common case (e.g., minimum-energy point), and higher peak performance when occasionally needed (e.g., beyond the performance at nominal supply voltage). Such demand is typical of several prominent applications such as IoT, wearables, biomedical, automotive, computer vision, on-chip AI and machine learning, among the many others.

Reconfiguration in the data and the clock path is introduced to dynamically manage the design tradeoffs that traditionally limit the gains of voltage scaling, both on the lower and the upper end of the power-performance range. Reconfiguration indeed circumvents the traditional designer's dilemma of choosing which end of the power-performance spectrum is favored over the other, when adopting wide voltage scaling. Drop-in solutions for fully automated and low-effort design based on commercial design tools are extensively discussed for processors, accelerators and on-chip memories. As further opportunity to reduce the design effort, higher power-performance versatility also enables extensive reuse of the same digital design instance across a wide range of applications. All concepts are exemplified by dedicated testchip designs and experimental results. To make the results immediately usable by the reader, all the scripts necessary to create automated design flows based on commercial tools are provided and explained. The book can be used as a reference to practicing engineers and researchers working in this area, as well as undergraduate and graduate students. The book is well suited for readers who are already familiar with basic electronics, and want to gain deeper knowledge in this field for product development or further research in the field.

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