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）