Rock3/CM3/e23/getting started
ROCK 3 > ROCK 3 Compute Module > Radxa E23 Dual Ethernet Carrier Board > Getting started
Contents
Radxa E23 Dual Ethernet Board is an application board based on the ROCK3 Compute Module(CM3) for networking applications.
What you need
Necessary
- Radxa E23
- One of the Storage media below:
- microSD, larger than 8GB.
- eMMC, larger than 8GB.
- Power supply
- Radxa E23 is powered by Type-C port. Input voltage is 5V only.
- USB Male A to Male A cable
- If you want write image on ROCK 3 from USB OTG port or use fastboot/adb commands you need an USB Male A to Male A cable to connect ROCK 3 and PC.
Optional
- microSD Card Reader
- For flashing the image into microSD Card
- USB to TTL serial cable
- This is needed for serial console.
- Ethernet cable
- Radxa E23 supports Internet access via WIFI or Ethernet.
- An Ethernet cable is used to connect your Radxa E23 to a local network and the Internet.
- Audio cable
- Audio can be played through speaker or headphones using a standard 3.5mm jack.
Features
| Model | Radxa E23 | |
|---|---|---|
| SoC CPU GPU NPU |
RK3566 Quad-core Cortex-A55, freqency 2Ghz Mali G52 | |
| Memory | 1GB, 2GB, 4GB or 8GB LPDDR4 (depending on SoM variant) | |
| Storage | eMMC (8/16/32/64/128GB) μSD card (μSD slot supports up to 128 GB μSD card) one SPI Nor Flash one EEPROM | |
| Audio | 3.5mm jack with mic HD codec that supports up to 24-bit/96KHz audio. | |
| Wireless | Optional wireless LAN, 2.4GHz and 5.0GHz IEEE 802.11b/g/n/ac wireless. Bluetooth 5.0, BLE with external antenna (depending on SoM variant). | |
| USB | USB 3.0 HOST X1 USB 2.0 OTG X1(USB C) USB 2.0 HOST(40P GPIO) | |
| Ethernet | 1GbE LAN X1 2.5GbE LAN X1(PoE Support) | |
| IO | 40-pin expansion header | |
| LED | Green LED X1 RGB LED X1 | |
| Key | Power Key X1 Recovery Key X1 | |
| Power | USB Type-C DC 5V | |
| Size | 2.5x2.2 inch(56x65mm) | |
Resource
Power supply
Radxa E23 is powered by Type-C port with 5V input, you can power it from 5V USB adapter or from PC/Laptop USB port.
eMMC
Radxa E23 is equipped with different capacities of eMMC (8/16/32/64/128GB). See Radxa CM3 Models and SKU.
DDR
Radxa E23 is equipped with different capacities of DDR (1//2/4/8GB). See Radxa CM3 Models and SKU.
Wireless module
With Wireless variant SoM, Radxa E23 have WiFi 2.4G&5G and Bluetooth 5.0 capability. To gain a stronger signal, you need an antenna attached to the antenna socket on board. The u.FL connector type is IPEX Gen 1.
Ethernet
Radxa E23 has one 1GbE LAN port and one 2.5GbE LAN port.
1GbE LAN port LED status and speed table.
| LED | speed |
|---|---|
| Yellow | 1000M |
| Green | 100M |
Type-A USB 3.0
The Type-A USB 3.0 port enables the attachment of peripherals such U Disk, keyboards, mice, USB dongle etc.
USB 2.0 OTG
USB 2.0 OTG can be accessed from the USB C port together with the power in. When powering from PC/laptop, the host can communicate with the board via USB protocol such as ADB, USB networking etc.
USB 2.0 HOST
| Radxa E23 40-pin Header | USB Interface |
|---|---|
| PIN#18 | Data+ |
| PIN#16 | Data- |
| PIN#14 | GND |
| PIN#2 | 5V |
TF/MicroSD
The TF card can be used as a system storage or an external storage. When it's used as a system storage, you had better choose the ones with storage space larger than 8GB. When it's used as an external storage, you can choose the ones with storage space up to 128GB. When the TF card is inserted into the TF card slot , the device will be automatically recognized by the system.
The TF card interface pin specification shows below.
| Pin# | Name |
|---|---|
| 1 | SDMMC0_D2 |
| 2 | SDMMC0_D3 |
| 3 | SDMMC0_CMD |
| 4 | VCC3V3_SYS |
| 5 | SDMMC0_CLK |
| 6 | GND |
| 7 | SDMMC0_D0 |
| 8 | SDMMC0_D1 |
| 9 | SDMMC0_DET_L |
| 10 | GND |
| 11 | GND |
| 12 | GND |
| 13 | GND |
Audio: 3.5mm jack with MIC
Audio can be played through speaker or headphones using a standard 3.5mm jack with MIC.
Note that HD codec supports up to 24-bit/96KHz audio.
LED
One Green Flashing LED is on Radxa CM3 for kernel status.
One RGB LED is controlled by three PWM channels. They can be controlled under Linux via sysfs. Below is their related sysfs directories.
| RGB LED | --- | sysfs |
|---|---|---|
| Red | --- | /sys/devices/platform/fdd70000.pwm/pwm/pwmchip*/ |
| Green | --- | /sys/devices/platform/fdd70030.pwm/pwm/pwmchip*/ |
| Blue | --- | /sys/devices/platform/fe6f0030.pwm/pwm/pwmchip*/ |
Key
There are two keys on board. One is power key and the other one is recovery key.
| Key | Function |
|---|---|
| Power key | Power on/off Radxa E23 |
| Recovery key | Boot Radxa E23 to loader mode: * Press recovery key and hold it * Plug in Type-C adapter * Wait for 5 seconds * Release recovery key |
General purpose input-output (GPIO) connector
Check E23 GPIO
System images and usage
Get your favorite system images from Radxa E23 Downloads.
And check the features of Ubuntu or Debian.
Flash images
Radxa E23 supports two boot methods including booting from eMMC and booting from MicroSD. Select one of the following methods.
Troubleshooting
Check ROCK 3 FAQs first, if it doesn't help, start a new post on the forum https://forum.radxa.com/c/rock3.