Rock3/CM3/radxae23

    ROCK 3 >  ROCK 3 Compute Module >  Radxa E23 Dual Ethernet Carrier Board

Features

Model	Radxa E23
SoC CPU GPU NPU	RK3566 Quad-core Cortex-A55, freqency 2Ghz Mali G52 0.8TOPS NPU
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

Radxa E23 has one 40-pin expansion header.

More details about 40-pin Header

PWM:
SPI:
I2C:
UART:
ADC:
USB

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.