处理器Main components of the A20
CPU:DualCore ARM CortexA7 1GHz Processor (r0p4, revidr=0x0) which have both VFP4and NEON SIMD coprocessors that share 32 floating point double-precisionregisters together[1]:FPU: standard ARM VFPv4-D32 FPU Floating Point Unit
SIMD: NEON (ARM's extended general-purposeSIMD vector processing extension engine)
GPU: Mali400 MP2VPU: Cedar Engine (VideoProcessor Unit for audio and video hardware decoding or encoding)HDMI-transmitter:HDMI CEC (Consumer Electronics Control)
A20 SoC Features
A20 SoC on a Cubieboard2
CPUARM Cortex-A7 Dual-Core (revision r0p4)
256KiB L2-Cache (shared between two cores)
32KiB (Instruction) / 32KiB (Data) L1-Cacheper core
SIMD NEON, VFP4
Virtualization
Large Physical Address Extensions (LPAE)1TB
GPU
ARM Mali400 MP2
Featuring 1 vertex shader (GP) and 2fragment shaders (PP).
Complies with OpenGL ES 2.0
Memory
LPDDR2/DDR3/DDR3L controller
NAND Flash controller and 64-bit ECC
Video
HD H.264 2160P video decoding
Full HD video decoding
BD Directory, BD ISO and BD m2ts videodecoding
H.264 High Profile 1080P@30fps encoding
3840×1080@30fps 3D decoding
Complies with RTSP, HTTP,HLS,RTMP,MMSstreaming media protocol
Display
Support multi-channel HD display
Integrated HDMI 1.4
CPU/RGB/LVDS LCD interface 1920×1080resolution
CVBS/YPbPr/VGA support
Integrated TV decoder
Camera
Integrated parallel 8-bit I/F YUV sensor
Integrated 24-bit parallel YUV 444 I/F
5M/8M CMOS sensor support
Dual-sensor support
Audio
Integrated HI-FI 100dB Audio Codec
Dual MIC noise cancellation
package:BGA441 19 mm × 19 mm (0.80 mm Pitch
The Realtek RTL8188ETV is a highlyintergrated singlechip 802.11n Wireless LAN(WLAN)network USB interface(USB1.0/1.1/2.0 comliant)controller.It combines a WLAN MAC,a 1T1R capable WLANbaseband,and WLAN RF in a single chip.The RTL8188ETV provides a completesolution for a high throughput performance integrated wireless LAN device.
Features
◇ 46-pin QFN
◇ CMOS MAC,Baseband PHY and RF in a single chip for IEEE802.11b/g/ncompatible WLAN
◇ Complete 802.11n solution for 2.4GHz band
◇ 72.1Mbps reveive PHY rate and 72.2Mbps transmit
◇ 150Mbps receive PHY rate and 150Mbps transmit PHY rate using 40MHzbandwidth
◇ Compatible with 802.11n specification
◇ Backward compatible with 802.11b/g devices while operating in802.11n mode
