OLIMEX© 2018
A20-OLinuXino-MICRO user's manual
CHAPTER 4: THE ALLWINNER A20 EMBEDDED PROCESSOR
4. Introduction to the chapter
In this chapter is located the information about the heart of OLinuXino – its microcontroller. The
information is a modified version of the datasheet provided by its manufacturers.
4.1 The processor
The A20 chip is very popular and well-known. It has some features that are hard to find in similar
embedded chips – including SATA support and native EMAC and GMAC. The main feature of the
A20 processor is the sheer computing power that allows FullHD video playback. The graphical
processing unit is also pretty powerful and supported by the default software packages that come
with the OlinuXino boards. The software support for the features in the processor is at pretty good
state thanks to the efforts of the community and Allwinner themselves.
The full list of features might be found below:
CPU
ARM® Cortex™-A7 Dual-Core
GPU
ARM® Mali400MP2
Complies with OpenGL ES 2.0/1.1
VIDEO
HD H.264 2160p video decoding
Multi-format FHD video decoding, including Mpeg1/2, Mpeg4 SP/ASP GMC, H.263,
H.264,
VP6/8, AVS jizun, Jpeg/Mjpeg, etc.
H.264 High Profile 1080p@30fps or 720p@60fps encoding
3840×1080@30fps 3D decoding, BD/SBS/TAB/FP supported
Complies with RTSP, HTTP, HLS, RTMP, MMS streaming media protocols
DISPLAY
Supports multi-channel HD display
Integrated HDMI 1.4 transmitter with HDCP support
CPU/RGB/LVDS LCD interface
Supports CVBS/YPbPr/VGA
Integrated TV decoder
CAMERA
Integrated parallel 8-bit I/F YUV sensor
Integrated 24-bit parallel YUV 444 I/F
Supports 5M CMOS sensor
Supports dual sensors
MEMORY
DDR2/DDR3/DDR3L controller
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