Allwinner V861 dual-core 64-bit RISC-V AI Camera SiP features 128MB DDR3L, 4K H.265/H.264 video encoder
Abstract
The Allwinner V861 is a new dual-core 64-bit RISC-V SiP optimized for 4K AI camera applications, notably integrating 128MB DDR3L and a 1 TOPS NPU. It utilizes XuanTie C907 and E907 cores, offering H.265 encoding up to 4Kp25 for high-resolution video processing. Supported by the Tina Linux SDK, this compact SiP enables advanced smart surveillance and Always-on Video (AOV) solutions.
Report
Key Highlights
- Architecture: Dual-core 64-bit RISC-V (XuanTie C907 cores up to 1.4GHz) paired with a low-power 32-bit RISC-V XuanTie E907 core (up to 800MHz).
- System-in-Package (SiP): Integrates 128MB of DDR3L memory directly on the package, simplifying external memory requirements.
- AI Performance: Features a powerful 1 TOPS (INT8) Neural Processing Unit (NPU) dubbed “AI-ISP 2.0” for accelerated AI workloads.
- Video Capability: Supports 4K @ 25fps H.264/H.265 video encoding.
- Form Factor: Compact 9x9 mm package (88-pin).
- Application Focus: Designed specifically for IP cameras, smart doorbells, 4G LTE HD cameras, and solar-powered camera solutions.
Technical Details
| Component | Specification |
|---|---|
| Main CPU | Dual XuanTie C907 (RV64GCBV/RV32GGCBV) up to 1.4GHz with RVV 1.0 extensions. |
| Low-Power CPU | Single XuanTie E907 (RV32IMAFC) up to 800MHz. |
| VPU Encoder | H.264/H.265 up to 4K @ 25fps; (M)JPEG up to 8192×8192. |
| NPU Accelerator | 1 TOPS (INT8). |
| Memory | 128MB DDR3/DDR3L (SiP). |
| Camera Interface | Up to three inputs supported: 4-lane/2x 2-lane/3x 1-lane MIPI-CSI and 8-bit parallel CSI. |
| Networking | RMII (10/100Mbps Fast Ethernet). |
| I/O | USB 2.0 DRD, 4x UART, 3x SPI, 4x TWI, 15x PWM, GPADC. |
| Security | Integrated Crypto Engine and Secure ID. |
Implications
- Advancement of RISC-V in Edge AI: The V861 significantly raises the bar for RISC-V adoption in the high-demand surveillance and edge AI sector, offering competitive performance (4K video + 1 TOPS AI) usually associated with proprietary architectures.
- Simplifying Camera Development: The SiP design, integrating 128MB DDR3L, reduces the complexity and size of PCB designs, lowers the overall bill of materials (BOM), and facilitates quicker time-to-market, particularly for compact devices like the Avaota F2 board.
- Software Ecosystem Maturity: The continued support through the company’s Tina Linux SDK (based on OpenWrt) indicates a deepening commitment to providing a stable, open-source-friendly software environment for RISC-V embedded developers, crucial for widespread adoption.
- Efficiency for Low-Power Applications: By featuring a dedicated low-power E907 core and prioritizing millisecond-level startup times, the V861 is specifically well-suited for battery-powered and solar-powered applications like smart doorbells and Always-on Video (AOV) solutions.
Technical Deep Dive Available
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