Merrii A80 Optimus Board
| Merrii A80 Optimus Board | |
|---|---|
 | |
| Manufacturer | Merrii |
| Dimensions | 135mm x 70mm |
| Release Date | August 2014 |
| Website | Device Product Page |
| Specifications | |
| SoC | A80 @ 1008Mhz |
| DRAM | 2GiB DDR3 @ 672MHz (SK hynix H5TQ4G63AFR-PBC 4Gb * 4) |
| NAND | 16GB eMMC (Samsung KLMAG2WEMB-B031) |
| Power | DC 5V @ 3A, optional Li-Ion battery |
| Features | |
| Video | HDMI (Type A - full) |
| Audio | 3.5mm headphone plug |
| Network | WiFi 802.11 b/g/n (Ampak AP6330), 10/100/1000Mbps Ethernet (Realtek RTL8211E) |
| Storage | eMMC, µSD |
| USB | 2 USB2.0 Host, 1 USB3.0 OTG |
| Other | IRDA, Bluetooth (Ampak AP6330) |
| Headers | UART, JTAG, LiPo Battery, Camera interface, GPIOs |
The A80 Optimus Board is a official development board for the Allwinner A80 SoC, targeting both developers and consumers.
Identification
The board has a clearly recognizable Allwinner logo, the name "Allwinner Tech", and "OPTIMUS BOARD", all uppercase, in the lower right hand corner.
Sunxi support
Current status
Sunxi Kernel
Like all A80 based devices, there is no support in our sunxi kernel.
Sunxi U-Boot
Like all A80 based devices, there is no support in u-boot-sunxi.
Mainline kernel
Mainline kernel support is queued up for 3.19. Currently only UARTs are supported.
Use the sun9i-a80-optimus.dtb device-tree file for the mainline kernel.
Mainline u-boot
Like all A80 based devices, there is no support in mainline u-boot.
Images
HW-Pack
BSP
Manual build
Follow SDK build howto to build u-boot and the kernel from the SDK.
Mainline kernel
Initial support for the A80 based on the A80 Optimus board is being worked on.
Use the sun9i-a80-optimus.dtb device-tree file for the mainline kernel.
Tips, Tricks, Caveats
FEL mode
There is no FEL mode button on this board.
Instead you can enter fel mode from U-Boot. While U-Boot is starting, type CTRL+C to interrupt it. At the prompt type efex to enter fel mode.
If booting fails entirely then FEL mode can be entered by shorting pin 29-30 on the nand/emmc with a suitable metal object (tweezer or the like), by vendor official procedure.
Expansion Ports
The A80 Optimus board exposes a 2 mm pitch connector for GPIO, and a Camera/MIPI connector [connector details needed].
GPIO Connector
| 2x16 GPIO Header | |||
|---|---|---|---|
| 1 | GPIO-ADC0 | 2 | GPIO-PL0-CPUS-TX |
| 3 | GPIO-ADC1 | 4 | GPIO-PL1-CPUS-RX |
| 5 | GND | 6 | GPIO-3V |
| 7 | GPIO-HSIC-STRB | 8 | GND |
| 9 | GND | 10 | GPIO-PH6-PWM0 |
| 11 | GPIO-HSIC-DATA | 12 | GND |
| 13 | GND | 14 | GPIO-PH14-SPI3-CLK |
| 15 | GPIO-PL7-1WIRE | 16 | GPIO-PH15-SPI3-MOSI |
| 17 | GPIO-PM0 | 18 | GPIO-PH16-SPI3-MISO |
| 19 | GPIO-PM1 | 20 | GPIO-PH17-SPI3-CS0 |
| 21 | GPIO-PM2 | 22 | GPIO-PG10-TWI3-SCK |
| 23 | GPIO-PM3 | 24 | GPIO-PG11-TWI3-SDA |
| 25 | GPIO-PM4 | 26 | GPIO-PG12-UART4-TX |
| 27 | GPIO-PM8 | 28 | GPIO-PG13-UART4-RX |
| 29 | GPIO-PM9 | 30 | GPIO-PG14-UART4-RTS |
| 31 | GPIO-PH2 | 32 | GPIO-PG15-UART4-CTS |
Camera/MIPI connector
| 2x17 MIPI Camera Header | |||
|---|---|---|---|
| 1 | GND | 2 | AFVCC-CAM |
| 3 | MIPI-CSI2-CLKP | 4 | AFVCC-CAM |
| 5 | MIPI-CSI2-CLKN | 6 | DVDD-CAM |
| 7 | GND | 8 | VCC-IO-CAM |
| 9 | MIPI-CSI2-D2P | 10 | NC |
| 11 | MIPI-CSI2-D2N | 12 | MIPI-CSI2-MCLK |
| 13 | GND | 14 | NC |
| 15 | MIPI-CSI2-D0P | 16 | NC |
| 17 | MIPI-CSI2-D0N | 18 | MIPI-CSI-SCK |
| 19 | GND | 20 | MIPI-CSI-SDA |
| 21 | MIPI-CSI2-D3P | 22 | MIPI-CSI-RESET |
| 23 | MIPI-CSI2-D3N | 24 | MIPI-CSI-PWDN |
| 25 | GND | 26 | NC |
| 27 | MIPI-CSI2-D1P | 28 | GND |
| 29 | MIPI-CSI2-D1N | 30 | NC |
| 31 | GND | 32 | GND |
| 33 | GND | 34 | GND |
JTAG
The board have a dedicated JTAG port with 2mm pinspacing.
| 2x7 JTAG Header | |||
|---|---|---|---|
| 1 | VCC-PH | 2 | GND |
| 3 | NC | 4 | GND |
| 5 | CPUB-TDI | 6 | GND |
| 7 | CPUB-TMS | 8 | GND |
| 9 | CPUB-TCK | 10 | GND |
| 11 | CPUB-TDO | 12 | NC |
| 13 | VCC-PH | 14 | GND |
Serial console port
The UART header is next to the Ethernet port. The board comes with a custom USB UART cable that fits direclty into the header.
| 1x5 UART Header | |
|---|---|
| 1 | GND |
| 2 | GND |
| 3 | VCC-PH |
| 4 | GPIO-PH13-UART0-RX |
| 5 | GPIO-PH12-UART0-TX |
Pictures
See also
- Pcduino8 A80 Board: this board has a very similar layout and is probably closely related.
Manufacturer images
Merrii provides firmware images for hardware owners, currently through their customer support.