- Copyright
- In Praise of Designing SOCs with Configured Cores...
- About the Author
- The Morgan Kaufmann Series in Systems on Silicon
- Foreword
- Preface
- Acknowledgements
- Introduction to 21st-Century SOC Design
- The Start of Something Big
- Few Pins = Massive Multiplexing
- Third Time’s a Charm
- The Microprocessor: A Universal System Building Block
- The Consequences of Performance—in the Macro World
- Increasing Processor Performance in the Micro World
- I/O Bandwidth and Processor Core Clock Rate
- Multitasking and Processor Core Clock Rate
- System-Design Evolution
- Heterogeneous- and Homogeneous-Processor System-Design Approaches
- The Rise of MPSOC Design
- Veering Away from Processor Multitasking in SOC Design
- Processors: The Original, Reusable Design Block
- A Closer Look at 21st-Century Processor Cores for SOC Design
- Bibliography
- The SOC Design Flow
- Xtensa Architectural Basics
- Basic Processor Configurability
- Processor Generation
- Xtensa Processor Block Diagram
- Pre-Configured Processor Cores
- Basics of TIE
- TIE Instructions
- Improving Application Performance Using TIE
- TIE Registers and Register Files
- TIE Ports
- TIE Queue Interfaces
- Combining Instruction Extensions with Queues
- Diamond Standard Series Processor Cores—Dealing with Complexity
- Bibliography
- MPSOC System Architectures and Design Tools
- SOC Architectural Evolution
- The Consequences of Architectural Evolution
- Memory Interfaces
- Memory Caches
- Local ROM and Local RAM Interfaces, the XLMI Port, and the PIF
- The PIF
- Ports and Queue Interfaces
- SOC Connection Topologies
- Shared-Memory Topologies
- Direct Port-Connected Topologies
- Queue-Based System Topologies
- Existing Design Tools for Complex SOC Designs
- MPSOC Architectural-Design Tools
- Platform Design
- An MPSOC-Design Tool
- MPSOC System-Level Simulation Example
- SOC Design in the 21st Century
- Bibliography
- Introduction to Diamond Standard Series Processor Cores
- The Diamond Standard Series of 32-bit Processor Cores
- Diamond Standard Series Software-Development Tools
- Diamond Standard Series Feature Summary
- Diamond Standard Series Processor Core Hardware Overview and Comparison
- Diamond-Core Local-Memory Interfaces
- The PIF Main Bus
- Diamond-Core Ports and Queues
- Diamond Standard Series Core Instructions
- Zero-Overhead Loop Instructions
- Miscellaneous Instructions
- Synchronization Instructions
- 16-bit Multiply and Multiply/Accumulate Instructions
- 32-bit Multiply Instructions
- Diamond-Development Tools
- Other Specialized Diamond Standard Series Processor Instructions
- Choosing a Diamond
- Bibliography
- The Diamond Standard Series 108Mini Processor Core
- The Diamond 212GP Controller Core
- The Diamond 232L CPU Core
- The Diamond 570T Superscalar CPU Core
- The Diamond 330HiFi audio DSP Core
- 300 Instructions Boost Audio Performance
- The Diamond 330HiFi: A High-Performance audio DSP Core
- Diamond 330HiFi audio DSP Core Interfaces
- The Diamond 330HiFi audio DSP Core’s Memory Map
- The Diamond 330HiFi audio DSP Core’s Cache Interfaces
- The Diamond 330HiFi audio DSP Core’s (Region-Protection Unit)
- Input- and Output-Queue Interfaces
- System Design with the Diamond 330HiFi audio DSP Core
- Bibliography
- The Diamond 545CK DSP Core
- Using Fixed Processor Cores in SOC Designs
- Beyond Fixed Cores
- A Viable Alternative to Manual RTL Design and Verification
- The Conventional, Embedded Software-Development Flow
- Fit the Processor to the Algorithm
- Accelerating the Fast Fourier Transform
- Accelerating an MPEG-4 Decoder
- Boost Throughput with Multiple Operations per Cycle
- High-Speed I/O for Processor-Based Function Blocks
- The Single-Bus Bottleneck
- Alone, Faster is Not Necessarily Better
- Bibliography
- The Future of SOC Design
5.3. Memory Interfaces
Xtensa and Diamond Standard Series microprocessor cores have a number of local-memory interfaces that allow fast access to instructions and data over a wide range of different architectural configurations. Several memory-specific interface types are supported:
Instruction and data cache memory
Local RAM
Local ROM
XLMI (high-speed local data bus).
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