Radxa Cubie A5E
| Radxa Cubie A5E | |
|---|---|
| Manufacturer | Radxa |
| Dimensions | 56mm x 69mm |
| Release Date | Jan 2025 |
| Website | Radxa Cubie A5E |
| Specifications | |
| SoC | A527 or T527(industrial version) @ 1.8 Ghz |
| DRAM | 1/2/4GiB LPDDR4 @ 2400 MT/s |
| Power | DC 5V @ 4A via USB-C connector |
| Features | |
| Video | Standard HDMI 2.0a, MIPI FPC connector |
| Audio | Line out on header, HDMI audio |
| Network | WiFi 802.11 a/b/g/n/ac/ax (BLink BL-M8800DS2), 2x 10/100/1000Mbps Ethernet (Maxio MAE0621A), one supports PoE |
| Storage | µSD, 128Mbit SPI flash (Winbond W25Q128JWPIQ), M.2 M Key for 2230 SSD |
| USB | 1 X USB3.0 Host, 1 X USB2.0 OTG |
Radxa Cubie A5E is the first Allwinner based SBC introduced by Radxa.
Identification
The PCB has a version number silkscreened at the top:
Cubie A5E V1.1 Radxa Logo
General Notes
M.2 M Key is muxed with USB 3.0, can be switched by GPIO.
Sunxi support
Current status
Not Supported
Images
- NOTE
- If the download file is in compressed format,you need decompression first.
- This image requires Allwinner’s Image tool for installation; commands similar to ‘dd’ cannot burn this image.
- Please use PhoenixCard to flash the image to the SD card.
Image:a527_linux_cubie_a5_uart0_beta_20250117.zip
Radxa BSP
Here are the board support files for Radxa Cubie A5E, which should be downloaded and placed in the corresponding
directories under the original SDK. The related information is as follows:
- Repository and SDK Directory Mapping *
| num | Repository Name | SDK Directory Path | Description |
|---|---|---|---|
| 1 | allwinner-target | target/a527
|
Target platform configurations and scripts |
| 2 | allwinner-device | device/config/chips/a527
|
Device chip configuration files |
| 3 | allwinner-bsp | bsp
|
Board Support Package (BSP) related code |
| 4 | linux | kernel/linux-5.15
|
Linux kernel source code |
| 5 | u-boot | brandy/brandy-2.0/u-boot-2018/
|
U-Boot source code |
Allwinner SDK Download
This is the Allwinner Official SDK Tina5.0 for T527/A527.
Create a folder named ‘tina’. After the download is completed, extract it to the ‘tina’ directory.
Use ‘repo sync -l’ to restore the directory structure.
The directory structure is as follows:
├── brandy ├── bsp ├── build ├── buildroot ├── build.sh -> build/top_build.sh ├── debian ├── device ├── docs ├── kernel ├── out ├── platform ├── prebuilt ├── rtos ├── target ├── tee_kit ├── test └── tools
After that, you can refer to the "Radxa BSP" section mentioned above and integrate the BSP configuration files for the RADXA CUBIE A5E to build the image for the Cubie A5E.
Now you can build things for yourself by following our Manual build howto and by choosing from the configurations available below.
Manual build
Image Build
- 📝 Configuration
source ./build/envsetup.sh ./build.sh config
- 📊 Configuration Example
Debian xfce image example: options : All available platform: 0. android 1. linux Choice [android]: 1 All available linux_dev: 0. bsp 1. dragonboard 2. buildroot 3. debian Choice [bsp]: 3 All available kern_name: 0. linux-5.10 1. linux-5.15 Choice [linux-5.10]: 1 All available ic: 0. a523 1. a527 2. t527 Choice [a523]: 1 All available board: 0. cubie_a5e 1. d10_linux_aiot 2. demo_linux_aiot 3. pro2_linux_aiot Choice [cubie_a5e]: 0 All available flash: 0. default 1. nor Choice [default]: 0 All available rootfs files: 0. linaro-bullseye-gnome-arm64.tar.gz 1. linaro-bullseye-lite-arm64.tar.gz 2. linaro-bullseye-lxde-arm64.tar.gz 3. linaro-bullseye-xfce-arm64.tar.gz Choice [linaro-bullseye-gnome-arm64.tar.gz]: 3 Setup BSP files
- 🔨 Building Image
./build.sh
- 📦 Packing Image
./build.sh pack
You will find the generated image in the ‘out’ directory.
U-Boot
./build.sh bootloader # Running the command './build.sh bootloader' will execute the build.sh script located in the brandy/brandy-2.0/ directory. # Alternatively, you can manually execute the following command in this directory: cd brandy/brandy-2.0/ ./build.sh -p sun55iw3p1 -b a527 # This will using sun55iw3p1_defconfig under the u-boot-2018/configs directory. # And compile the components required for the bootloader, including boot0, fes1, sboot, and u-boot. output: u-boot-sun55iw3p1.bin boot0_sdcard_sun55iw3p1.bin fes1_sun55iw3p1.bin sboot_sdcard_sun55iw3p1.bin etc. Viewing the compile log will reveal the folder where the compiled files are located. +-----+--------+--------------------------------------------------------------------------------------------------------------------+ | num | type | use | +=====+========+====================================================================================================================+ | 1 | boot0 | boot0 is the first stage bootloader (FSBL) in the Allwinner chip boot process. | | | | It is responsible for initializing basic hardware (such as DRAM, clocks, etc.) and loading the next stage bootloader | | | | (such as U-Boot). | +-----+--------+--------------------------------------------------------------------------------------------------------------------+ | 2 | fes | The program run during firmware burning. | +-----+--------+--------------------------------------------------------------------------------------------------------------------+ | 3 | sboot | sboot is the bootloader for secure boot. It is responsible for verifying the signatures of subsequent bootloaders | | | | (such as U-Boot or the Linux kernel) to ensure the integrity and security of the boot chain. | +-----+--------+--------------------------------------------------------------------------------------------------------------------+ | 4 | U-Boot | The universal boot loader. | +-----+--------+--------------------------------------------------------------------------------------------------------------------+
Linux Kernel
# 1) Ensure you have performed the parameter configuration with ‘./build.sh config’ before running this command. $./build.sh kernel # 2）This will use the defconfig file located at device/config/chips/a527/configs/cubie_a5e/debian/linux-5.15/bsp_defconfig and the device tree file at device/config/chips/a527/configs/cubie_a5e/linux-5.15/board.dts. # 3）You will find the kernel image in the out/a527/cubie_a5e/debian/ directory. +-----+-----------+----------------------+ | num | type | use | +=====+===========+======================+ | 1 | boot.img | Linux Kernel Image | +-----+-----------+----------------------+ | 2 | sunxi.dtb | The device-tree blob | +-----+-----------+----------------------+
Expansion ports
The Cubie A5E has a 40-pin, 0.1" populated connector with several low-speed interfaces.
The primary function follows loosely the Raspberry Pi pin assignment, but pinmuxing gives access to more interfaces (not all at the same time).
| GPIO number | Function7 | Function6 | Function5 | Function4 | Function3 | Function2 | Function1 | PIN# | PIN# | Function1 | Function2 | Function3 | Function4 | Function5 | Function6 | Function7 | GPIO number | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| +3.3V | 1 | 2 | +5.0V | |||||||||||||||
| 37 | PB-EINT5 | HDMI-SDA | PWM0-9 | TRACE-CLK | I2S0-BCLK | TWI1-SDA | PB5 | 3 | 4 | +5.0V | ||||||||
| 36 | PB-EINT4 | HDMI-SCL | PWM0-8 | TRACE-DATA2 | I2S0-MCLK | TWI1-SCK | PB4 | 5 | 6 | GND | ||||||||
| 263 | PI-EINT7 | SPI2-CLK | PWM0-8 | UART4-CTS | UART6-RX | PI7 | 7 | 8 | PB9 | UARTO-TX | TWIO-SCK | TRACE-DATA1 | I2S0-DIN2 | I2S0-DOUT2 | PB-EINT9 | 41 | ||
| GND | 9 | 10 | PB10 | UARTO-RX | TWIO-SDA | PWM0-1 | I2S0-DIN3 | I2S0-DOUT3 | PB-EINT10 | 42 | ||||||||
| 265 | PI-EINT9 | PWM0-10 | DMIC-DATA2 | TWI5-SDA | PI9 | 11 | 12 | PI2 | UART5-TX | SPI1-CSO | PWM0-3 | I2S2-BCLK | I2S2-BCLK | PI-EINT2 | 258 | |||
| 266 | PI-EINT10 | I2S2-MCLK | PWM0-11 | DMIC-DATA1 | OWA-OUT | PI10 | 13 | 14 | GND | |||||||||
| 12 | S-PL-EINT12 | S-SPI0-MOSI | DMIC-DATA2 | S-UART0-TX | MCU-PWM0-6 | S-TWI2-SCK | PL12 |
15 | 16 | PI11 | UART3-TX | DMIC-DATA0 | PWM0-12 | PI-EINT11 | 267 | |||
| +3.3V | 17 | 18 | PI14 | UART6-RTS | DMIC-CLK | PWM0-15 | PI-EINT14 | 270 | ||||||||||
| 45 | PI-EINT13 | PWM0-4 | UART7-TX | TWI4-SCK | PB13 | 19 | 20 | GND | ||||||||||
| 46 | PB-EINT14 | SPI1-MISO | PWM0-5 | SPI1-MOSI | UART7-RX | TWI4-SDA | PB14 | 21 | 22 | PL13 | S-TWI2-SDA | MCU-PWM0-7 | S-UARTO-RX | DMIC-DATA3 | S-SPI-MISO | S-PL-EINT13 | 13 | |
| 44 | PB-EINT12 | PWM0-3 | SPI1-CLK | UART7-CTS | TWI5-SDA | PB12 | 23 | 24 | PB11 | TWI5-SCK | UART7-RTS | PWM0-2 | SPI1-CSO | PB-EINT11 | 43 | |||
| GND | 25 | 26 | PI0 | TWI4-SCK | UART4-TX | PWM0-1 | I2S2-DIN3 | I2S2-DOUT3 | PI-EINTO | 256 | ||||||||
| 272 | (USB2 DP)* | PI-EINT16 | PWM1-1 | TWI2-SDA | UART3-CTS | PI16 | 27 | 28 | PI15 | TWI2-SCK | UART3-RTS | PWM1-0 | PI-EINT15 | (USB2 DM)* | 271 | |||
| 264 | PI-EINT8 | SPI2-MOSI | PWM0-9 | IR-RX | TWI5-SCK | PI8 | 29 | 30 | GND | |||||||||
| 268 | PI-EINT12 | SPI2-MISO | PWM0-13 | UART3-RX | PI12 | 31 | 32 | PI1 | TWI4-SDA | UART4-RX | PWM0-2 | I2S2-DIN2 | I2S2-DOUT2 | PI-EINT1 | 257 | |||
| 262 | PI-EINT6 | SPI2-CSO | PWM0-7 | UART6-TX | UART4-RTS | PI6 | 33 | 34 | GND | |||||||||
| 269 | PI-EINT13 | I2S2-MCLK | PWM0-14 | DMIC-DATA3 | UART6-CTS | PI13 | 35 | 36 | PI3 | UART5-RX | PWM0-4 | I2S2-LRCK | SPI1-CLK | PI-EINT3 | 259 | |||
| GPADC2 | 37 | 38 | PI5 | UART5-CTS | SPI1-MISO | PWM0-6 | I2S2-DINO | I2S2-DOUT1 | PI-EINT5 | 261 | ||||||||
| GND | 39 | 40 | PI4 | UART5-RTS | SPI1-MOSI | PWM0-5 | I2S2-DOUT0 | I2S2-DIN1 | PI-EINT4 | 260 |
Note: * The USB signal and GPIO(TWI/UART/PWM) signal on PIN 27 and PIN 28 cannot be active simultaneously and require different SKUs. Please refer to the Models and SKU section below.
Tips, Tricks, Caveats
FEL mode
A dedicated FEL button. FEL mode will be entered without an SD card and with no valid eGON signature on the SPI flash. Alternatively the usual FEL trigger SD card image can be used.
The USB-C connector used to power the board carries the USB-OTG signals for the FEL mode, so the board needs to be powered through a host computer or a powered USB hub for using FEL mode.
LEDs
There are two unlabelled LEDs on the board, a blue and a green one. According to the schematic they are Power (green) and Status (blue), but both are connected to GPIOs (PC12 and PC13), so need active software toggling to light up.
SPI booting
The board contains a 16MB SPI NOR flash chip, and the SoC can boot firmware from there.
Serial port
The UART pins are located at PIN 8 and PIN 10 at 40P GPIO of the board. Just attach some leads according to our UART Howto.
Models and SKU
Example SKU Code: RS500-D1E0G0J0R38S16
- RS500: Code for Cubie A5E
- D1E0G0J0R38S16: Configurations, as explained in the table below:
| Code | Explanation | Options | Description |
|---|---|---|---|
| D | DRAM Size | D1 | 1GB RAM |
| D2 | 2GB RAM | ||
| D4 | 4GB RAM | ||
| E | eMMC Size | E0 | eMMC chip not soldered |
| E8 | 8GB eMMC | ||
| E16 | 16GB eMMC | ||
| E32 | 32GB eMMC | ||
| G | GPIO PIN#27/#28 Function | G0 | PIN#27/#28 GPIO Function |
| G1 | PIN#27/#28 USB Function | ||
| J | Industrial Grade | J0 | Commercial Grade (0 °C ~ 60 °C) |
| J1 | Industrial Grade (-40 °C ~ 85 °C) | ||
| R | SoC Model | R38 | A527 SoC |
| R41 | T527 SoC | ||
| S | SPI Flash Size | S0 | SPI Flash Not Soldered |
| S16 | 16MB SPI Flash |
Pictures
Schematics
- File:Radxa cubie a5e schematic v1.1 20250113.pdf
- File:Radxa cubie a5e schematic v1.2 20250113.pdf
- File:Radxa cubie a5e components placement map v1.2 20250113.pdf
- File:Radxa cubie a5e components placement map v1.1 20250113.pdf