Edge-RT300

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1 Introduction

Overview
Front
Back
  • The Edge-RT300 is designed and developed by FriendlyELEC for professional and enterprise users. It is based on SOM-4418.
  • The Edge-RT300 has rich interconnection interfaces, including dual RJ45 ethernet ports, Wi-Fi, BT, 4G, RS-485 and M-BUS master, which makes it suitable for IoT applications.

2 Hardware Spec

  • CPU Board: SOM-4418
    • SoC:Samsung S5P4418 Quad Core Cortex-A9 with dynamic frequency scaling up to 1.4G Hz
    • System Memory:1GB 32bit DDR3 RAM
    • eMMC:8GB
  • Connectivity:
    • One 10/100/1000Mbps Ethernet Port (Native MAC, PHY is RTL8211E) with unique MAC, support WOL(Wake On Lan)
    • One 10/1000Mbps Ethernet Port (USB to LAN, RTL852B)
    • One MiniPCIe Socket & MicroSIM Card Slot for 4G module
    • One 802.11b/g/n Wi-Fi & Bluetooth 4.0 (AP6212)
    • One TTL to RS-485 converter
    • One TTL to wired M-BUS Master converter
  • Video Input: MIPI-CSI
  • Video Output: LVDS
  • Audio: 2-Chanel headphone output, one Microphone input
  • USB: 1 x USB 2.0 Host(Via USB Hub), 1 x USB 2.0 OTG
  • LED: 1 x power LED , 2 x User LED
  • Key: 1 x User Key, PowerKey, Reset key, SD/MMC Boot Select key
  • Other Resource: 1 x MicroSD, RTC battery input, 2-pin ZH connector for 5V cooling fan
  • Power: DC 12V/2A
  • PCB: Four Layer, 96 mm x 90 mm x 1.6mm
  • Working Temperature: -40℃ to 70℃

3 Detailed description

layout

3.1 RS-485&M-BUS

RS485&M-BUS
Connector Pitch: 3.5mm

Pin# 6 5 4 3 2 1
Name L2 L1 B A GND 12V
Description M-BUS L2 M-BUS L1 RS-485 B RS-485 A GND 12V Power input(optional)

RS-485

  • Use SN65HVD3082EDR RS-485 Transceivers, support 1/8 Unit Load—Up to 256 Nodes on a Bus, Bus-Pin ESD Protection Up to 15 kV.
  • baud rate: 0.2Mbps MAX
  • Connetected to UART2.

M-Bus Master

3.2 MIPI-CSI&Audio

Pinout

Pin# Name Description
1 3.3V out 3.3V Power Output
2 3.3V out 3.3V Power Output
3 GND Ground
4 I2C0_SDA I2C bus0 data
5 I2C0_SCL I2C bus0 clock
6 GND Ground
7 AUDIO_GND Audio Common terminal
8 HP_R Headphone output R
9 HP_L Headphone output L
10 MICIN_P Microphone input P
11 GND Ground
12 GPIOB23 GPIO
13 GPIOC2 GPIO
14 GPIOC13/PWM1 GPIO or PWM
15 GND Ground
16 GPIOB27/HP_DETECT GPIO, or Headphone insert detect
17 /NC
18 GND Ground
19 /NC
20 /NC
21 GND Ground
22 MIPI_CSI0_D1N MIPI CSI Data0
23 MIPI_CSI0_D1P
24 GND Ground
25 MIPI_CSI0_D0N MIPI CSI Data1
26 MIPI_CSI0_D0P
27 GND Ground
28 MIPI_CSI0_CLKN MIPI CSI Clock
29 MIPI_CSI0_CLKP
30 GND Ground

3.3 LVDS

Pin# Name Description
1 5V 5V Power output
2 5V 5V Power output
3 5V 5V Power output
4 LVDS_Y0M LVDS D0-
5 LVDS_Y0P LVDS D0+
6 GND Ground
7 LVDS_Y1M LVDS D1-
8 LVDS_Y1P LVDS D1+
9 GND Ground
10 LVDS_Y2M LVDS D2-
11 LVDS_Y2P LVDS D2+
12 GND Ground
13 LVDS_CLKM LVDS Clock-
14 LVDS_CLKP LVDS Clock+
15 GND Ground
16 LVDS_Y3M LVDS D3-
17 LVDS_Y3P LVDS D3+
18 GND Ground
19 /NC
20 GND Ground
21 LCD_SCL for touch pannel,and backlight control,etc
22 LCD_SDA
23 LCD_TPINT
24 GND Ground

3.4 USB Host

The 10/100Mbps USB-LAN, MiniPCIe and USB Type-A share the USB 2.0 480Mbps bandwidth.

3.5 User LEDs

LED LED1 LED2
GPIO GPIOB30 GPIOB31
ON logic 0 0

3.6 User Key

This key is connected to AliveGPIO3 of the SoC.

3.7 RJ45 Ethernet

10/100/1000Mbps Ethernet support WOL(Wake On Lan) function. The following steps shows how to enable this function.
a) disable NetworkManager first
b) install ethtool
c) add following lines to /etc/network/interfaces

   auto eth0
   iface eth0 inet dhcp
   ethernet-wol g

3.8 debug console

The baud rate is 115200bps.

3.9 Power Supply

Load to MiniPCIe USB Type-A USB OTG LVDS MIPI-CSI&Audio
Output Voltage 3.5V 5V 5V 5V 3.3V
Recommended Load 2A 0.5A 0.5A 0.3A 0.3A
Max allowed Load 3A 1A 1A 0.5A 0.5A
10W Max totally

4 Schematics & Mechanical drawing