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Benefits

  • Partnership with Cadence – Ensures alignment with Cadence OEM workflows.
  • System-Level Validation – Go beyond core-only analysis to full SoC exploration.
  • Early Performance Insight – Detect bottlenecks in pipelines, caches, and memory.
  • Cross-Domain Utility – Supports applications from audio to AI infrastructure.
  • Reduced Risk – Software can be validated against hardware models before silicon.

The Tensilica processor model in VisualSim provides a comprehensive environment for analyzing and optimizing Cadence Tensilica-based cores. It fully supports the Tensilica ISA and includes models for Lx7 and Lx8 processors, enabling designers to explore pipeline behavior, instruction scheduling, and execution unit efficiency.

VisualSim has a close partnership with Cadence, and is widely used by Cadence OEM customers. This relationship allows VisualSim to serve as a natural complement to Cadence’s Xtensa/Tensilica toolchain, giving system designers the ability to:

  • Validate software performance on Tensilica cores before hardware implementation.
  • Perform system-level exploration with complete workloads, memory hierarchies, and interconnects.
  • Optimize across domains such as audio DSP, IoT devices, AI/ML, and automotive control systems.

VisualSim models referencing vendors are independent abstractions developed and validated using publicly available architectural and software information, are not endorsed by the original owner, and all trademarks and product names remain the exclusive property of their respective owners.

Overview

  • Complete Tensilica ISA Support – Accurate execution modeling.
  • Models for Lx7 and Lx8 – Configurable pipelines and registers.
  • Execution Units – Integer, floating-point, and cache units.
  • Instruction Queues – Scheduling and context switching.
  • Configurable Parameters – Clock speed, register count, pipeline depth.

Supported Standards

  • Tensilica ISA (Cadence Xtensa framework)

Key Parameters

  • Processor_Speed_MHz – Core operating frequency.
  • Number_of_Registers – Configurable register file.
  • Pipeline_Stages – Depth of processor pipeline.

Parameter Snapshots

  • Parameter

Simulation Results

  • Pipeline Efficiency – Hazards, stalls, and instruction throughput.
  • Memory Access Studies – Cache hit/miss ratios and latency.
  • Power vs. Performance Reports – Optimize for low-energy workloads.
  • Software Validation – Execute workloads and analyze instruction behavior.
  • Plot

Applications

  • Embedded Systems – Firmware and control applications.
  • Audio DSP – High-performance, low-power audio processing.
  • IoT Devices – Energy-efficient RISC+DSP cores for edge computing.
  • Automotive – Control processors for in-vehicle subsystems.
  • AI/ML Workloads – Custom accelerators leveraging Tensilica cores.

Integrations

  • Works seamlessly with Cadence Xtensa/Tensilica environments.
  • Connects to buses, memory controllers, NoCs, and RTOS in VisualSim.
  • Co-simulates with AI/ML accelerators, DSP blocks, and embedded peripherals.

View Demo

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