Implementing Low-Power Configurable Processors - Practical Options and Tradeoffs - Technical Paper from DAC 2005

Tensilica

Paper by John Wei and Chris Rowen.

Configurable processors enable dramatic gains in energy efficiency, relative to traditional fixed instruction-set processors. This energy advantage comes from three improvements. First, configuration of the instruction set permits a much closer fit of the processor to the target applications, reducing the number of execution cycles required. Second, configuring the processor removes unneeded features, reducing power and area overhead. Third, automatic processor generation tools enable logic optimization, signal switching reductions, and seamless mapping into low-voltage circuits and processes, for very low-power operation. The first improvement has been well-studied. Analysis of the second and third improvements requires detailed circuit and layout experiments, which is the primary focus of this paper.

Starting from a range of existing available power saving options, this work explores the tradeoff and analyzes the results: the design priority tradeoff, the process technology impact, and implementing low-power configurable processor using commercial scaled-VDD cell libraries compatible with mainstream SOC practices. These real processor designs can achieve power dissipation approaching 20µW/MHz at 0.8V and close to 10µW/MHz at 0.6V, using production 0.13um libraries. Finally, this work quantifies the dramatic process, voltage and temperature dependence in post-layout leakage power for small processor designs.


Read the complete story ...
Rating:


Review Article Be the first to review this article

Featured Video
Editorial
Peggy AycinenaWhat Would Joe Do?
by Peggy Aycinena
H-1B Visa: de Geus’ tragedy looms large
Peggy AycinenaIP Showcase
by Peggy Aycinena
IP for Cars: Lawsuits are like Sandstorms
More Editorial  
Jobs
ASIC/FPGA Design Engineer for Palo Alto Networks at Santa Clara, CA
Technical Support Engineer EU/Germany/UK for EDA Careers at N/A, United Kingdom
Lead Java Platform Engineer IOT-WEB for EDA Careers at San Francisco Area, CA
Staff Software Engineer - (170059) for brocade at San Jose, CA
Mechanical Designer/Engineer for Palo Alto Networks at Santa Clara, CA
Technical Support Engineer for EDA Careers at Freemont, CA
Upcoming Events
Embedded Systems Conference ESC Boston 2017 at Boston Convention & Exhibition Center Boston MA - May 3 - 4, 2017
2017 GPU Tech Conference at San Jose McEnery Convention Center 150 West San Carlos Street San Jose CA - May 8 - 11, 2017
High Speed Digital Design and PCB Layout at 13727 460 Ct SE North Bend WA - May 9 - 11, 2017
Nanotech 2017 Conference & Expo at Gaylord National Hotel & Convention Center WA - May 14 - 17, 2017
DAC2017



Internet Business Systems © 2017 Internet Business Systems, Inc.
595 Millich Dr., Suite 216, Campbell, CA 95008
+1 (408)-337-6870 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering TechJobsCafe - Technical Jobs and Resumes GISCafe - Geographical Information Services  MCADCafe - Mechanical Design and Engineering ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy Policy