Voice Control Ready Pico-ITX i.MX8M Board for Embedded IoT Solutions

Voice Control Ready Pico-ITX i.MX8M Board for Embedded IoT Solutions

Estone technology is proud to announce the new addition to our pico-ITX embedded board family – EMB-2238, an NXP i.MX8M based single board computer.  Building upon the success of our i.MX6 board series. The EMB-2238 is our first embedded board to integrated with hardware DSP specially designed for voice control applications, This Quad core ARM Cortex-A53 board takes the advantage of NXP’s latest i.MX8M application processor with up to 15-year longevity, advance audio and 4K video supports.  It is ready for ODM and industrial product designs for the fast-growing edge computing, voice human machine interface (HMI), streaming multimedia, and machine learning applications.

Targeting embedded and IoT applications with voice control, advance audio and display requirements, the EMB-2238 features a PoE (Power over Ethernet) ready GbE port, rich I/O options including RS-232/485 and USB 3.0, over 20 channels of high performance digital audio input and output expansion and dual core hardware DSP for voice-control algorithms. The board also features a 4-lane MIPI DSI and CSI and built in I2C touch panel support for all types of touchscreen applications. A 40-pin expansion header supports PCIe, GPIO, I2C, serial communications and a wide range of expansion options.

EMB-2238 IoT Voice Control Board

The voice control and audio support of the board is where the EMB-2238 truly stands apart. The on-board smart codec provides support for Dual Digital MEMS Microphone inputs, dual-core DSP with multi-mic noise suppression, Automatic Speech Recognition (ASR) enhancement,  acoustic echo cancellation (AEC)  and barge-in technology enable voice commands for during loud music playback., functions. 16 channel digital audio inputs and 10 channel digital audio outputs support microphone array expansion for voice and best in class audio with 32-bit 384KHz at each channel.  BSP supports include Embedded Linux, Android, Qt, Wayland, Amazon AVS (Alexa Voice Service) Device SDK, Sensory TrulyHandsfree Wake Word Engine, and offline Automatic Speech Recognition (ASR), and Natural Language Understanding (NLU) engine, like the Snips AI voice control platform.

EMB-2238 with the Power Over Ethernet module plugged into its 40-pin expansion port

Highlighted Product Specifications

  • Processor – NXP i.MX8M Quad 4x ARM Cortex-A53, AND 1x ARM Cortex-M4
  • Storage – Onboard iNAND flash (8GBdefault), 1x MicroSD Slot, 256k EEPROM
  • Display Options – 1x MIPI 4-Lane DSI for 7”, 8”, 10.1”, and other LCD Panel, 1x MicroHDMI
  • Expansion – 40-Pin Connector with PCIe, GPIO, Front Panel Control, PoE Input, 8-Channel Audio
  • I/O – 1x RS-232/485 Block, 1 x RS-232 Header, 2x USB 2.0 Type A, 2x USB 2.0 Header, 1x USB Type C 3.0 OTG, 4x GPIO, 2x I2C (for TP and MIPI CSI), 1x 4-lane MIPI-CSI
  • Voice Control – Dual Digital MEMS Microphone Header via CS47L24 with Dual DSP, Support Multi-MIC Noise Suppression, Acoustic Echo Cancellation (AEC), Omi-Directional Spatial, 8 Channel Digital Audio/DMIC Inputs (SAI5) for MIC Array

Full Specifications listed for the EMB-2238

  • Processor — NXP i.MX8M (4x Cortex-A53 @ 1.5GHz); Vivante GC7000Lite/GC7000VLX for OpenGL/ES 3.1, OpenGL 3.0, Vulkan, OpenCL 1.2 GPU; Cortex-M4 @ 266MHz
  • Memory/storage:
    • 2GB to 4GB LPDDR4 RAM
    • 8GB iNAND flash
    • MicroSD slot
  • Wireless — 802.11 b/g/n and Bluetooth 4.10 module (USB-based)
  • Networking — GbE port with optional PoE; optional second GbE via PCIe add-on with GPIO, 9-36V input, LED control etc.
  • Display/camera I/O:
    • Micro-HDMI port for up to 4096 x 216 0 @60Hz
    • MIPI-DSI (4-lane) for up to 1920 x 1200 and I2C-based support for LCD touchpanels
    • MIPI-CSI (4-lane)
  • Audio/voice control I/O:
    • Class D 2W mono speaker
    • 2x HP out header
    • 8-channel digital in and out (SAI1) with 32-bit @ 384 kHz fs and TDM support
    • Cirrus CS47L24 smart codec with 2x-core, 300-MIPS DSP with 3x DAC and audio hub with SoundClear Control
    • 2x digital MEMS mic header (via CS47L24) with multi-mic noise supp., AEC
    • Omni-directional spatial 8 ch. digital audio/DMIC inputs (SAI5) for mic array (via 40-pin)
  • Other I/O:
    • USB 3.0 OTG Type-C port
    • 2x USB 2.0 host ports
    • 2x USB 2.0 headers
    • RS-232/RS-485 terminal block
    • RS232 header
    • 4x+ GPIO, 2x I2C for TP and MIPI CSI
  • Expansion — 40-pin connector with PCIe x1, GPIO, font panel control, PoE, 8 ch. audio in etc.
  • Other features — Watchdog timer; 10 to 15-year support longevity
  • Power — 5V DC header or optional PoE or optional 9-36V input (GbE add-on)
  • Operating temperature — 0 to 60°C
  • Dimensions — 100 x 72mm; Pico-ITX form factor
  • Operating system — Yocto Project (Linux kernel 4.9, Qt, Wayland); Android 8.1.0; ships with Amazon AVS and Sensory TrulyHandsfree Wake Word Engine
EMB-2238 with 10-channel output, 6-channel input audio reference design for high performance sound bar and amplifier

YouTube Video

No pricing or availability information was provided for the EMB-2238 SBC. More information may be found at the Estone Technology EMB-2238 product page.

Live demo of the Snips and Amazon AVS based on Yocto built Linux is available a the Embedded World 2019 at Nuremberg,  Germany,  February 26 – 28.  Both number is Hall1: 1-129.

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Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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Jotrin Electronics

good article

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