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구글 AI 머신 러닝 Coral SoM 모듈
(Coral System-on-Module (SoM))
개요
- 본 제품은 구글 인공지능 머신 러닝 Coral SoM 모듈입니다.
- 머신 러닝기능을 추가하고자 하는 임베디드 시스템에 사용이 가능한 제품입니다.
- 구글 Edge TPU 코프로세서 및 NXP의 iMX8M SoC, eMMC, LPDDR4 RAM, WiFi, BT를 지원합니다.
- Edge TPU는 구글이 제공하는 머신 러링 ASIC입니다.
- 본 제품은 Coral Dev 보드에 포함이 되어 있기도 합니다.
특징
- Provides a complete system: The Coral SoM is a fully-integrated Linux system that includes NXP's iMX8M system-on-chip (SoC), eMMC memory, LPDDR4 RAM, Wi-Fi, and Bluetooth, and the Edge TPU coprocessor for ML acceleration. It runs a derivative of Debian Linux we call Mendel.
- Performs high-speed ML inferencing: The on-board Edge TPU coprocessor is capable of performing 4 trillion operations (tera-operations) per second (TOPS), using 0.5 watts for each TOPS (2 TOPS per watt). For example, it can execute state-of-the-art mobile vision models such as MobileNet v2 at 400 FPS, in a power efficient manner.
- Integrates with your custom hardware: The SoM connects to your own baseboard hardware with three 100-pin connectors.
- Supports TensorFlow Lite: No need to build models from the ground up. TensorFlow Lite models can be compiled to run on the Edge TPU.
- Supports AutoML Vision Edge: Easily build and deploy fast, high-accuracy custom image classification models to your device with AutoML Vision Edge. Also available with a baseboard as part of the Coral Dev Board.
- NXP i.MX 8M SoC
- Quad-core ARM Cortex-A53, plus Cortex-M4F
- 2D/3D Vivante GC7000 Lite GPU and VPU
- Google Edge TPU ML accelerator
- Cryptographic coprocessor
- Wi-Fi 2x2 MIMO (802.11b/g/n/ac 2.4/5 GHz)
- Bluetooth 4.2
- 8GB eMMC
- 1GB LPDDR4
- USB 3.0
- Gigabit Ethernet
- HDMI and MIPI-DSI
- MIPI-CSI-2
- Up to 95x GPIO (including SPI, I2C, PWM, UART, SAI, and SDIO)
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Key benefits of the SoM:
- High-speed and low-power ML inferencing (4 TOPS @2 W)
- A complete Linux system (running Mendel, a Debian derivative)
- Small footprint (40 x 48 mm)
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Feature Details Main system-on-chip (i.MX8M) Arm Cortex-A53 MPCore platform Quad symmetric Cortex-A53 processors:
- 32 KB L1 Instruction Cache
- 32 KB L1 Data Cache
- Support L1 cache RAMs protection with parity/ECC
- 1 MB unified L2 cache
- Support L2 cache RAMs protection with ECC
- Frequency of 1.5 GHz
Arm Cortex-M4 core platform - 16 KB L1 Instruction Cache
- 16 KB L1 Data Cache
- 256 KB tightly coupled memory (TCM)
Graphic Processing Unit (GPU) - Vivante GC7000Lite
- 4 shaders
- 267 million triangles/sec
- 1.6 Gigapixel/sec
- 32 GFLOPs 32-bit or 64 GFLOPs 16-bit
- Supports OpenGL ES 1.1, 2.0, 3.0, 3.1, Open CL 1.2, and Vulkan
Video Processing Unit (VPU) - 4Kp60 HEVC/H.265 main, and main 10 decoder
- 4Kp60 VP9 and 4Kp30 AVC/H.264 decoder (requires full system resources)
- 1080p60 MPEG-2, MPEG-4p2, VC-1, VP8, RV9, AVS, MJPEG, H.263 decoder
I/O connectivity - 2x USB 3.0/2.0 controllers with integrated PHY interfaces
- 1x Ultra Secure Digital Host Controller (uSDHC) interfaces
- 1x Gigabit Ethernet controller with support for EEE, Ethernet AVB, and IEEE 1588
- 2x UART modules
- 2x I2C modules
- 2x SPI modules
- 16x GPIO lines with interrupt capability
- 4x PWM lines
- Input/output multiplexing controller (IOMUXC) to provide centralized pad control
On-chip memory - Boot ROM (128 KB)
- On-chip RAM (128 KB + 32 KB)
External memory - 32/16-bit DRAM interface: LPDDR4-3200, DDR4-2400, DDR3L-1600
- 8-bit NAND-Flash
- eMMC 5.0 Flash
- SPI NOR Flash
- QuadSPI Flash with support for XIP
Display HDMI Display Interface:
- HDMI 2.0a supporting one display up to 1080p
- Upscale and downscale between 4K and HD video (requires full system resources)
- 20+ Audio interfaces 32-bit @ 384 kHz fs, with Time Division Multiplexing (TDM) support
- SPDIF input and output
- Audio Return Channel (ARC) on HDMI
- MIPI-DSI 4 channels supporting one display, resolution up to 1920 x 1080 at 60 Hz
- LCDIF display controller
- Output can be LCDIF output or DC display controller output
Audio - 1x SPDIF input and output
- 2x synchronous audio interface (SAI) modules supporting I2S, AC97, TDM, and codec/DSP interfaces
- 1x SAI for 8 Tx channels for HDMI output audio
- 1x SPDIF input for HDMI ARC input
Camera - 2x MIPI-CSI2 camera inputs (4-lane each)
Security - Resource Domain Controller (RDC) supports four domains and up to eight regions
- Arm TrustZone (TZ) architecture
- On-chip RAM (OCRAM) secure region protection using OCRAM controller
- High Assurance Boot (HAB)
- Cryptographic acceleration and assurance (CAAM) module
- Secure non-volatile storage (SNVS): Secure real-time clock (RTC)
- Secure JTAG controller (SJC)
ML accelerator Edge TPU coprocessor - ASIC designed by Google that provides high performance ML inferencing for TensorFlow Lite models
- Uses PCIe and I2C/GPIO to interface with the iMX8M SoC
- 4 trillion operations per second (TOPS)
- 2 TOPS per watt
Memory and storage Random access memory (SDRAM) - 1 GB LPDDR4 SDRAM (4-channel, 32-bit bus width)
- 1600 MHz maximum DDR clock
- Interfaces directly to the iMX8M build-in DDR controller
Flash memory (eMMC) - 8 GB NAND eMMC flash memory
- 8-bits MMC mode
- Conforms to JEDEC version 5.0 and 5.1
Expandable flash (MicroSD) - Meets SD/SDIO 3.0 standard
- Runs at 4-bits SDIO mode
- Supports system boot from SD card
Network & wireless Ethernet - 10/100/1000 Mbps Ethernet/IEEE 802.3 networks
- Reduced gigabit media-independent interface (RGMII)
Wi-Fi Murata LBEE5U91CQ module:
- Wi-Fi 2x2 MIMO (802.11a/b/g/n/ac 2.4/5 GHz)
- Supports PCIe host interface for W-LAN
Bluetooth Murata LBEE5U91CQ module:
- Bluetooth 4.2 (supports Bluetooth low-energy)
- Supports UART interface
Security Cryptographic coprocessor Microchip ATECC608A cryptographic coprocessor:
- Asymmetric (public/private) key cryptographic signature solution based on Elliptic Curve Cryptography and ECDSA signature protocols
Hardware interface Baseboard connectors 3x 100-pin connectors (Hirose DF40C-100DP-0.4V) Antenna connectors 2x coaxial cable connectors (Murata MM8930-2600)
