Engineering the Complex SOC
The first unified hardware/software guide to processor-centric SOC design
Processor-centric approaches enable SOC designers to complete far larger projects in far less time. Engineering the Complex SOCis a comprehensive, example-driven guide to creating designs with configurable, extensible processors. Drawing upon Tensilica’s Xtensa architecture and TIE language, Dr. Chris Rowen systematically illuminates the issues, opportunities, and challenges of processor-centric design.
Rowen introduces a radically new design methodology, then covers its essential techniques: processor configuration, extension, hardware/software co-generation, multiple processor partitioning/communication, and more. Coverage includes:
Why extensible processors are necessary: shortcomings of current design methods
Comparing extensible processors to traditional processors and hardwired logic
Extensible processor architecture and mechanisms of processor extensibility
Latency, throughput, coordination of parallel functions, hardware interconnect options, management of design complexity, and other issues
Multiple-processor SOC architecture for embedded systems
Task design from the viewpoints of software andhardware developers
Advanced techniques: implementing complex state machines, task-to-task synchronization, power optimization, and more
Toward a “sea of processors”: Long-term trends in SOC design and semiconductor technology
For all architects, hardware engineers, software designers, and SOC program managers involved with complex SOC design; and for all managers investing in SOC designs, platforms, processors, or expertise.
Professional Technical Reference
Upper Saddle River, NJ 07458
Table of Contents
List of Figures.
Foreword by Clayton Christensen.
Foreword by John Hennessy.
1. The Case for a New SOC Design Methodology.
The Age of Megagate SOCs.
The Fundamental Trends of SOC Design.
What’s Wrong with Today’s Approach to SOC Design?
Preview: An Improved Design Methodology for SOC Design.
2. SOC Design Today.
Hardware System Structure.
Current SOC Design Flow.
The Impact of Semiconductor Economics.
Six Major Issues in SOC Design.
3. A New Look at SOC Design.
Accelerating Processors for Traditional Software Tasks.
Example: Tensilica Xtensa Processors for EEMBC Benchmarks.
System Design with Multiple Processors.
New Essentials of SOC Design Methodology.
Addressing the Six Problems.
4. System-Level Design of Complex SOCs
Complex SOC System Architecture Opportunities.
Major Decisions in Processor-Centric SOC Organization.
Communication Design = Software Mode + Hardware Interconnect.
Hardware Interconnect Mechanisms.
Performance-Driven Communication Design.
The SOC Design Flow.
Non-Processor Building Blocks in Complex SOC.
Implications of Processor-Centric SOC Architecture.
5. Configurable Processors: A Software View.
Processor Hardware/Software Cogeneration.
The Process of Instruction Definition and Application Tuning.
The Basics of Instruction Extension.
The Programmer’s Model.
Processor Performance Factors.
Example: Tuning a Large Task.
Long Instruction Words.
Fully Automatic Instruction-Set Extension.
6. Configurable Processors: A Hardware View.
Application Acceleration: A Common Problem.
Introduction to Pipelines and Processors.
Hardware Blocks to Processors.
Moving from Hardwired Engines to Processors.
Designing the Processor Interface.
A Short Example: ATM Packet Segmentation and Reassembly.
Novel Roles for Processors in Hardware Replacement.
Processors, Hardware Implementation, and Verification Flow.
Progress in Hardware Abstraction.
7. Advanced Topics in SOC Design.
Pipelining for Processor Performance.
Inside Processor Pipeline Stalls.
Optimizing Processors to Match Hardware.
Multiple Processor Debug and Trace.
Issues in Memory Systems.
Optimizing Power Dissipation in Extensible Processors.
Essentials of TIE.
8. The Future of SOC Design: The Sea of Processors.
Why Is Software Programmability So Central?
Looking into the Future of SOC.
Processor Scaling Model.
Future Applications of Complex SOCs.
The Future of the Complex SOC Design Process.
The Future of the Industry.
The Disruptive-Technology View.
The Long View.