Allwinner V861 dual-core 64-bit RISC-V AI Camera SiP features 128MB DDR3L, 4K H.265/H.264 video encoder

Allwinner V861 is a new dual-core 32-bit/64-bit RISC-V C907 system-in-package (SiP) with 128MB on-chip DDR3L and designed for 4K AI camera applications with a 1 TOPS AI NPU.

The chip also features a 32-bit RISC-V E907 low-power core, a 4Kp25 H.264/H.265 video encoder, a 1080p60 JPEG video decoder and encoder, MIPI CSI and parallel camera interfaces, audio codec with input and output interfaces, Fast Ethernet, USB 2.0, and a range of digital and analog I/Os.

Allwinner V861M3-XXX specifications:

• CPU
  • Dual-Core RISC-V XuanTie C907 (RV64GCBV/RV32GGCBV) clocked up to 1.4GHz with RVV 1.0 extensions
  • Single-core RISC-V XuanTie E907 (RV32IMAFC) clocked up to 800MHz
• VPU
  • Video Encoder
    • H.264/H.265 up to  4K @ 25fps
    • (M)JPEG up to 8192×8192
  • Video Decoder – (M)JPEG up to 1080p60
• AI accelerator – 1 TOPS (INT8) NPU dubbed “AI-ISP 2.0”
• Memory
  • 128MB DDR3/DDR3L (SiP)
  • “SQPI” PSRAM interface
• Storage
  • QSPI flash
  • eMMC 4.41
  • SDIO 2.0/3.0
• Display – SPI interface
• Camera
  • 4-lane/2x 2-lane/3x 1-lane MIPI-CSI
  • 8-bit parallel CSI
• Audio
  • I2S/PCM interfaces
  • Optional? audio codec with 2x mic, 1x line out
• Networking – RMII (10/100Mbps Fast Ethernet)
• USB – USB 2.0 DRD
• Other I/Os
  • 4x UART, 3x SPI, 4x TWI
  • GPADC
  • 15x PWM
• Security – Crypto Engine and Secure ID
• Package – 9×9 mm 88-pin (0.35mm pitch)

Allwinner mentions the V861 series includes multiple variants with slightly different specifications. The specifications above are for the V861M3-XXX model, and we’re told to refer to the official datasheet for other variants, but it’s not something I could do since the documentation is not publicly available.

The Allwinner V861 is not the first RISC-V camera SoC from the company, as the company previously introduced the V821 32-bit RISC-V with built-in WiFi and Full HD camera support. The new processor features two 64-bit RISC-V cores, supports 4K resolution, H.265 video codec, and integrates a 1 TOPS AI accelerator. Like its predecessor, it’s officially supported by the company’s Tina Linux SDK based on OpenWrt.

I found out about the new SoC through a post on X by 柚木 鉉 (GLGH_), who designed a successor to the Avaota F1 camera board, aptly named Avaota F2. It is equipped with an Allwinner V861M3-XXX SiP, and features a USB-C port, dual camera support, a PTZ motor controller through the AXP333 PMIC, a microSD card slot, and connectors for microphones and a speaker, plus I/Os via through and castellated holes.

The board will be open-source hardware like its predecessor, but the files have not been released yet. I’ll certainly write more about it once the full details are published and the board is available for sale.

A few more details about the Allwinner V861 can be found on Allwinner’s website (slow to load for me, and images won’t load automatically).

Jean-Luc Aufranc (CNXSoft)

Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.

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