全志V853芯片介绍

v853chip

【全志V853-高性能边缘AI视觉处理芯片】

V853 是一颗面向智能视觉领域推出的新一代高性能、低功耗的处理器SOC，可广泛用于智能门锁、智能考勤门禁、网络摄像头、行车记录仪、智能台灯等智能化升级相关行业。

V853 集成Arm Cortex-A7和RISC-V E907 双CPU，内置最大 1T 算力 NPU，使用全志自研 Smart 视频引擎，最大支持5M@25fps H.265编码和5M@25fps H.264编解码，同时集成高性能 ISP 图像处理器，可为客户提供专业级图像质量。V853 还支持 16-bit DDR3/DDR3L，满足各类产品高带宽需求；支持 4lane MIPI-CSI/DVP/MIPI-DSI/RGB 等丰富的专用视频输入输出接口，满足各类AI视觉产品需求；采用先进的22nm工艺，具有更优的功耗和更小的芯片面积。

同时，全志为 V853 配套提供了稳定、易用的 Linux SDK和软硬件参考设计，可以帮助客户快速实现产品量产。

V853芯片应用场景：

芯片框图

D1-H芯片框图

参数规格

CPU

Arm Cortex-A7@1GHz 
32 KB I-cache, 32 KB D-cache
128 KB L2 cache
RISC-V E907@600MHz
16 KB I-cache, 16 KB D-cache

NPU

Maximum perormance up to 1 Tops
Emdedded 128KB internal buffer
Supports deep learning frameworks: TensorFlow, Caffe, Tflite, Pytorch, Onnx NN, and so on

Memory

16-bit DDR3/DDR3L SDRAM, supporting maximum capacity of 1GB
SD3.0/eMMC 5.1 interface
Supports SPI Nor/SPI Nand Flash

Video Engine

Video encoder
    - H.264/H.265 up to 4K@15fps or 5M@25fps
     - JPEG up tp 1080p@60fps

Video decoder
    - Supports H.264 BP/MP/HP, JPEG
    - Real-time multiple streams H.264 encoding capability: 5M@25fps
    - JPEG snapshot performance of 1080P@60fps independently

Display Engine

Allwinner SmartColor post processing for an excellent display experience
Supports 2 video channels and 1 UI channel
Supports G2D hardware accelerator including rotate, mixer, scaler functionns

Video Input

ISP
    - Maxumum performance of 5M@30fps and maximum resolution of 3072 * 1772
    - Adjustable 3A functions (AE, AWB, AF), and 3A parameters are adjustable
    - Provides ISP tuning tools for the PC
VIPP
    - Four VIPP YUV422 or YUV420 outputs
    - Maximum performance of 5M@30fps, maximum resolution of 3072 * 1772
8-/10-/12-/16-bit parallel CSI interface
    - Supports digital camera (DC), BT.601, BT.656, BT.1120 protocol
    - Maximum video capture resolution up to 5M@30fps
4-lane MIPI CSI interface
    - Supports DOL WDR mode and splitting into 2*2-lane MIPI CSI
    - Supperts 4-ch VC de-interleaver function 
    - Maximum video caputure resolution up to 5M@30fps

Video Out

RGB LCD output interface up to 1920 x 1080@60fps
4-lane MIPI DSI interface up to 1920 x 1080@60fps

Audio

1 DAC and 2 ADCs
Analog audio interfaces: MICIN1P/N, MICIN2P/N, LINEOUTRP/N
Digital audio interfaces: I2S/PCM *2 , DMIC

Security System

AES, DES, 3DES encryption and decryption algorithms
RSA/ECC signature verigication algorithm
MD5/SHA and HMAC tamper proofing
PRNG/TRRNG hardware random number generator
Integrated 2Kbits OTP storage space

Connectivity

USB2.0 DRD, SDIO 3.0, SPI *4, UART * 4, TWI * 5, WIEGAND
PWM (12-ch), GPADC (4-ch) 
10/100/1000M EMAC with RMII and RGMII interfaces

Package

LFBGA 318, 12mm * 12 mm, 0.5mm ball pitch

Chip process

22nm

不同版本芯片的区别

V85x 共有 V851s、V851se、V853s、V853 四个型号，规格类似，都是针对AI视觉、高清编码推出的芯片，主要应该在带camera的产品上，规格、性能略有差别，可以根据实际产品的应用形态选择。

各型号具体配置差异如下表：

型号	V851s	V851se	V853s	V853
NPU	0.5T	0.5T	0.8T	1T
DDR	内置64M DDR2	内置64M DDR2	内置128M DDR3	外置最高1G DDR3/DDR3L
H264编码	5M@20fps,4M@30fps	5M@20fps,4M@30fps	5M@25fps,4M@30fps	5M@25fps,4M@30fps
H256编码	5M@20fps,4M@30fps	5M@20fps,4M@30fps	5M@25fps,4M@30fps	5M@25fps,4M@30fps
ISP性能	4M	4M	5M	5M
视频输出	sRGB 8bit, MIPI 2lane	无	RGB888, MIPI 4lane	RGB888, MIPI 4lane
视频输入	DVP10Bit, MIPI CSI 4lane	DVP10Bit, MIPI CSI 4lane	DVP12Bit, MIPI CSI 4lane	DVP12Bit, MIPI CSI 4lane
分辨率	4M@30fps	4M@30fps	5M@30fps	5M@30fps
封装	QFN88	QFN88	BGA318	BGA318
备注		V851se内置百兆以太网，复用了显示输出，无法连接显示屏（可以使用SPI，IIC显示屏）		引脚封装完全一致，V853换V853s仅需摘除V853的外置内存即可（V853s的内存线是GND）