A5s 网络摄像机芯片采用528MHz ARM11处理器，高清H.264和MJPEG视频编码引擎，并且集成了强大的图像处理单元。A5s 网络摄像机芯片拥有多通道视频编码器，支持高达14MP像素的视频编码，先进的3D MCTF 降噪技术和宽动态处理功能，支持多达四路的视频流（其中两路视频流可达1080p30+800x600p30）。
45纳米芯片工艺及丰富的I/O设备，将A5s的eBOM缩减到最小，可让产品适用于多样化的外形，例如：自动对焦的枪型摄影机、微型球机以及袖珍无线摄 像机等。A5s网络摄像机解决方案是以Linux系统为基础的软件开发包，提供丰富多样的ARM层API以满足不同差异化需求和性能优化。

Ambarella A5s Block Diagram

Overview
The A5s IP Camera SoC integrates powerful image sensor processing, HD 1080p30 H.264 multi-stream encoding, and an ARM11 processor with rich I/O for IP Camera and Network Video Server (NVS) applications. Leveraging Ambarella’s technology leadership in professional broadcasting, A5s offers excellent video quality, 3D noise reduction, digital WDR and four independent H.264/MJPEG streams.
The A5s SDK supports development of fully-featured IP Cameras and multi-channel NVS devices while offering developer differentiation such as analytics, digital PTZ, customizable AWB/AE/AF and a wide range of sensor choices.

Key Features
Single Platform, Many Uses
° From entry-level SD to high-end multi-megapixel
° Wide range of sensors supported
Promotes Differentiation
° High-performance, software-programmable
° Proven Linux SDK and rich ARM-level APIs
Cost And Power Efficient
° Ultra-compact BOM with a single 16-bit DDR
° Less than 3 Watts for a complete camera design
Superior Image Quality
° Advanced image sensor pipeline
° 3D noise reduction
Enhanced Video Processing
° Digital WDR
° AE/AWB/AF, digital PTZ, face tracking, more
State-Of-The-Art H.264 Compression Engine
° High compression ratio, also in high motion scenes
° Full HD 1080p30 + D1

General Specifications
Sensor and Video I/O
° 8-lane SLVDS, HiSPI™, MIPI CSI-2, and parallel
° Up to 14 Mpixel resolution and 240 MHz pixel rate
° BT.656/1120 108 MHz 1-4 ch video input/output
° HDMI 1.3 out
Front End Sensor Processing
° Lens correction
° Black level correction
° Defect pixel cluster correction
° CFA crosstalk noise filtering
° RGB Bayer demosaicing
° 3D color transformation with gamma
Image Processing
° 3D noise reduction filtering
° Digital WDR contrast enhancement
° AE/AWB/AF libraries supplied
° Day/Night and DC/Stepper iris control
° Flicker suppression
° Alpha-blending OSD; text, overlays, privacy mask
° Digital WDR contrast enhancement
° Crop, mirror, flip, scale, digital PTZ
° Saturation, brightness, contrast
° Motion and face detection
Low Power
° 650 mW power consumption for 1080p30 encode
Video Encoder
° H.264 BP/MP/HP Level 5.0
° MJPEG
° Up to 4 simultaneous streams
° Up to 14MP resolution
° Full HD 1920×1080@30fps + D1
° 3MP@20fps, 5MP@12fps, or 10MP@3fps
° CBR/VBR/ConstantQP rate control
CPU
° 528 MHz ARM1136J-S
° AES/DES/3DES cryptographic acceleration
Memory
° 1x 16-bit DDR2/DDR3/Mobile DDR/Mobile DDR2
Peripherals
° SDIOx2 for SD Card and 3G/WiFi
° Ethernet MII
° USB 2.0 Device
° I2S audio in/out
° NAND Flash, 16-bit Host i/f
° SSI/SPI, IDC, PWM, GPIO, RS-232C/485
° Real-time clock, watchdog timer, JTAG
Physical
° 15×15 mm, 404 pin TFBGA package
° Operating temperature: -20˚C to +85˚C