全志A40i处理器代表了Allwin在智能工业控制领域的最新成就。该处理器适用于需要3D图形、高级视频处理的应用程序。用户接口丰富、质量高、功耗低、系统集成度高。
A40i主要应用于基于视觉交互的工业控制产品。
A40i芯片特性：
可以在4车道MIPIDSI显示器、RGB面板或双通道LVDS面板上显示内容。也支持CVBS-OUT和HDMIV1.4
支持双cmos传感器并行接口和4通道cvbs-in，能够执行多通道视频记录。
A40I达到工业级标准，运行温度达到AEC-Q100级标准。
集成音频编解码器，24位/192 KHz DAC回放，支持I2S/PCM接口连接外部音频编解码器。离子高达32位/192kHz。
为了降低总系统成本，A40I具有广泛的硬件外设支持，支持配置阵列，例如3*USB2.0、GMAC、EMAC、SATA、2*TSC、PS2、RTP、4*SDHC等
支持Linux3.10、Android7.1和上面的系统。
A40i芯片框图：
A40i芯片参数：
CPU Architecture
• Quad-core ARM Cortex-A7 MPCore Processor
• ARMv7 ISA standard ARM instruction set
• Thumb-2 Technology
• Jazeller RCT
• NEON Advanced SIMD
• VFPv4 floating point
• Hardware virtualization support
• Large Physical Address Extensions(LPAE)
• JTAG debug
•One general timer for per CPU
• 32KB Instruction and 32KB Data L1 cache for per CPU
• 256KB L2 cache
GPU Architecture
• 3D
‒ Mali400 MP2 GPU
‒ Support OpenGL ES 2.0 / OpenVG 1.1 standard
• 2D
‒ Support BLT and ROP2/3/4
‒ Support 90° /180° /270° rotation
‒ Support mirror/ alpha (plane and pixel alpha) /color key
‒ Format conversion: ARGB 8888/4444/1555, RGB565, MONO 1/2/4/8bpp, Palette 1/2/4/8bpp (input only), YUV
Memory Subsystem
SDRAM
• Compatible with JEDEC standard DDR2/DDR3/DDR3L/LPDDR2/LPDDR3 SDRAM
• Up to 2GB address space
• 16 address signal lines and 3 bank signal lines
• 32-bit bus width
NAND Flash
• Supports SLC/MLC NAND and EF-NAND
• Supports SDR/Toggle DDR/ONFI DDR NAND interface
• 16 address signal lines and 3 bank signal lines
• up to 8-bit data bus width
SD/MMC Interface
• Up to four SMHC controllers
• Comply with eMMC standard specification V5.0
• Comply with SDIO card specification V3.0
• 1/4/8-bits bus width
USB
• One USB 2.0 OTG
• Two EHCI/OHCI compliant Hosts
Video Decoding
• Support picture size up to 3840x2160
• Support decoding speed up to 1080p@60fps
• Supported multi-formats: MPEG1/2, MPEG4 SP/ASP, WMV, H.263 including Sorenson Spark, H.264 BP/MP/HP, VP6/8, AVS/AVS+, JPEG/MJPEG, etc
Video Encoding
• H.264 HP up to 1080p@45fps
• JPEG baseline: picture size up to 4096x4096
• Alpha blending
• Thumb generation
• 4x2 scaling ratio from 1/16 to 64 arbitrary non-integer ratio
Video Output
• HDMI 1.4 transmitter with HDCP up to 1080p@60fps
• Supports 4 lanes MIPI DSI up to 1080p@60fps
• Supports LVDS interface up to 1920 x 1080@60fps
• Supports RGB interface up to 1920 x 1080@60fps
• Supports CVBS out, 4-ch CVBS, 1-ch YPbPr or 1-ch VGA
Analog Audio Output
• Stereo audio DAC
• Stereo capless headphone drivers
• One low-noise analog microphone bias
• Dedicated headphone outputs
• Two mixers to meet different requirements
Video Input
• Supports 4-ch analog CVBS in
• Supports Dual parallel interfaces:CSI0 and CSI1
• Supports CCIR656 protocol for each CSI
• Supports 16-bit BT1120 interface for CSI0
• Supports 24-bit RGB/YUV444 input for CSI1
Analog Audio Input
• Support four analog audio inputs
• Stereo audio ADC
EMAC
• Support 10/100Mbps MII PHY interface
• Comply with the IEEE 802.3-2002 standard
Digital Audio
• One I2S compliant audio interface, supporting 8-channel and 2-channel input
• One PCM, supporting linear sample (8-bit or 16-bit), 8-bit u-law and A-law companded sample
• One AC97 audio codec, supporting 2-channel and 6-channel audio data output
GMAC
• Support 10/100/1000Mbps RGMII/MII PHY interface
• Comply with the IEEE 802.3-2002 standard
DMA
• 16 channels:8 channels with normal DMA,8 channels with dedicated DMA
• Support data width of 8/16/32 bits
• Support linear and IO address modes
• Support data transfer types with memory-to-memory, memory-to-peripheral, peripheral-to-memory
PWM
• 8 PWM channels outputs
• Support cycle mode and pulse mode
• The pre-scale is from 1 to 64
Smart Card Reader
• One smart card reader controller supporting ISO/IEC 7816-3 and EMV2000 specifications
• Support synchronous and any other non-ISO 7816 and non-EMV cards
CIR
• A flexible receiver for IR remote
• Up to two IR controllers
• Programmable FIFO thresholds
UART
• Up to 8 UART controllers
• 64-Bytes Transmit and receive data FIFOs for all UART
• Compliant with industry-standard 16550 UARTs
• Support Infrared Data Association(IrDA) 1.0 SIRR
SATA
• One SATA Host controller
• Support SATA 1.5Gb/s and SATA 3.0Gb/s
• Comply with SATA spec 2.6
• Support external SATA(eSATA)
Keypad
• One keypad matrix interface up to 8 rows and 8 colums
• Interrupt for key press or key release
• Internal debouncing filter to prevent switching noises
SPI
• Up to 4 SPI controllers
TWI
• Up to 5 TWIs(Two Wire Interface) controllers
• Support Standard mode (up to 100K bps) and Fast mode (up to 400K bps)
TWI
• Up to 5 TWIs(Two Wire Interface) controllers
• Support Standard mode (up to 100K bps) and Fast mode (up to 400K bps)
Operating Temperature
• - 40℃~ 85℃
参考资料可借鉴A40i datasheet（一牛网论坛）