RISC-V CPU IP With ISO 26262 Full Compliance

Overview

AndesCore™ N25F is a 32-bit CPU IP core based on AndeStar™ V5 architecture which incorporated RISC-V technology, it is capable of delivering high per-MHz performance and operating at high frequencies, at the same time it is small in gate count. N25F also supports single- and double-precision floating point and bit-manipulation instructions. N25F comes with options, including branch prediction for efficient branch execution, Instruction and Data caches, Local Memories for low-latency accesses, ECC for L1 memory soft error protection, and Andes Custom Extension™ (ACE) to add proprietary instructions to accelerate performance/power consumption critical spots.

N25F's 5-stage pipeline is optimized for high operating frequency and high performance. Features also includes PLIC and vectored interrupts for serving various types of system events, AXI 64-bit or AHB 64/32-bit bus, PowerBrake, QuickNap™ and WFI mode for low power and power management, and JTAG debug interface for development support.

Key Features

  • AndeStar™ V5 Instruction Set Architecture (ISA), compliant to RISC-V technology
  • Floating point extensions
  • Bit-manipulation extensions
  • Andes extensions, architected for performance and functionality enhancements
  • Separately licensable Andes Custom Extension™ (ACE) for customized acceleration
  • 32-bit, 5-stage pipeline CPU architecture
  • 16/32-bit mixable instruction format for compacting code density
  • Branch prediction to speed up control code
  • Return Address Stack (RAS) to speed up procedure returns
  • Physical Memory Protection (PMP)
  • Flexibly configurable Platform-Level Interrupt Controller (PLIC) for supporting wide range of system event scenarios
  • Enhancement of vectored interrupt handling for real-time performance
  • Advanced CoDense™ technology to reduce program code size

Block Diagram

RISC-V CPU IP With ISO 26262 Full Compliance Block Diagram

Applications

  • Networking and Communications
  • Advanced Driver-Assistance Systems
  • Video and Image Processing
  • Storage and Media Streaming

Technical Specifications

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Semiconductor IP