C860 utilizes a 12-stage superscalar pipeline, with a standard memory management unit, and can run Linux and other operating systems. It also utilizes a 3-issue and 8-execution deep out-of-order execution architecture, with a single/double-precision floating point engine. It can be equipped with an AI acceleration engine. It is suitable for application fields requiring high server performance, such as intelligent monitoring, machine vision and edge servers.
High-performance 32-bit multi-core processor with AI acceleration engine
Overview
Key Features
- Instruction set: T-Head ISA (32-bit/16-bit variable-length instruction set);
- Multi-core: Isomorphic multi-core, with 1 to 4 optional cores;
- Pipeline: 12-stage;
- Microarchitecture: Tri-issue, deep out-of-order;
- General register: 32 32-bit GPRs; 16 128-bit VGPRs;
- Cache: 2-stage cache; I-cache: 32 KB/64 KB (size options); D-cache: 32 KB/64 KB (size options); L2 Cache: 128 KB-2 MB (size options);
- Cache check: Optional ECC check or parity check;
- Bus interface: 1 128-bit master interface; 1 128-bit slave interface;
- Memory protection: On-chip memory management unit supports hardware backfilling;
- Floating point engine: Supports single and double precision floating point operations;
- AI vector calculation engine: Dual-line 128-bit operation width, supporting half-precision/single-precision/8-bit/16-bit/32-bit parallel computing;
- ng half-precision/single-precision/8-bit/16-bit/32-bit parallel computing
- Multi-core consistency: Multiple-core shared L2-cache, and supports cache data consistency;
- Interrupt controller: Supports a multi-core shared interrupt controller;
- Debugging: Supports multi-core collaborative debugging;
- Performance monitoring: Supports a hardware performance monitoring unit;
- AI acceleration engine: Provides dedicated acceleration instructions to accelerate various typical neural networks;
- Hybrid branch processing: Hybrid branch processing technology including branch direction, branch address, function return address and indirect jump address prediction to improve the fetching efficiency;
- Data prefetching: Multi-channel and multi-mode data prefetching technology greatly improves data access bandwidth.
Block Diagram

Applications
- Intelligent Vision;
- Smart Home Appliances.
Technical Specifications
Related IPs
- High-performance 64-bit RISC-V architecture multi-core processor with AI vector acceleration engine
- High-performance 32-bit Superscalar Processor
- High-performance 32-bit processor for real-time control
- High-performance AI dataflow processor with scalable vector compute capabilities
- ARC HS47D 32-bit, dual-issue processor core, ARCv2DSP ISA, with 100+ DSP instructions and I&D cache
- ARC EM7D DSP Enhanced 32-bit processor core with caches, ARCv2DSP ISA, for low power embedded DSP ap