AndesCore™ NX25F is a compact 64-bit CPU IP core based on AndeStar™ V5 architecture which incorporated RISC-V technology, it is tailored for high-performance embedded applications that needs to access address space over 4GB. NX25F also supports single- and double-precision floating point instructions. NX25F 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.
NX25F'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 or AHB 64-bit data bus for addressing up to 64-bit address, PowerBrake, QuickNap™ and WFI mode for low power and power management, and JTAG debug interface for development support.
Compact High-Speed 64-bit CPU Core
Overview
Key Features
- AndeStar™ V5 Instruction Set Architecture (ISA), compliant to RISC-V technology
- Floating point extension
- Andes extensions, architected for performance and functionality enhancements
- Separately licensable Andes Custom Extension™ (ACE) for customized acceleration
- 64-bit CPU architecture, enabling software to utilize the memory spaces far beyond 4G bytes imposed by 32-bit CPUs
- 16/32-bit mixable instruction format for compacting code density
- Branch predication 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
Benefits
- Performance
- AndeStar™ V5 Instruction Set Architecture (ISA), compliant to RISC-V technology
- Floating point extension
- Andes extensions, architected for performance and functionality enhancements
- Separately licensable Andes Custom Extension™ (ACE) for customized acceleration
- 64-bit CPU architecture, enabling software to utilize the memory spaces far beyond 4G bytes imposed by 32-bit CPUs
- 16/32-bit mixable instruction format for compacting code density
- Branch predication 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
- Flexibility
- Easy arrangement of preemptive interrupts
- StackSafe™ hardware to help measuring stack size, and detecting runtime overflow/underflow
- ECC or Parity check on level-one memories for fault protection
- Several configurations to tradeoff between core size and performance requirements
- Power Management
- PowerBrake, QuickNap™ and WFI (Wait For Interrupt) for power management at different occasions
Block Diagram
Applications
- Large-scale network controllers
- High capacity storage devices
- Data analytic accelerators
- Computer Vision and Pattern Recognition
- Artificial Intelligence to Deep Learning
Deliverables
- NX25F with CPU Subsystem
- Pre-integrated NX25F, PLIC, Debug Module and simulation-only encrypted Platform
- NX25F with AE350 Platform
- NX25F with CPU Subsystem, plus AXI/AHB Platform
Technical Specifications
Related IPs
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- Compact High-Speed 32-bit CPU Core with Level-2 Cache
- Compact High-Speed 32-bit CPU for Real-time and Linux Applications