A70x

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A70x
Device front.jpg
Manufacturer Manufacturer
Dimensions 193.3mm x 116.3mm x 9.9mm
Release Date Month year
Website Device Product Page
Specifications
SoC A20 @ 1Ghz
DRAM 512MiB DDR3 @ 360MHz
NAND 4GB
Power DC 5V @ 2A, 6500mAh 3.7V Li-Ion battery
Features
LCD 800x480 (7" 16:9)
Touchscreen X-finger capacitive/resistive (Manufacturer device)
Video HDMI (Type C - mini)
Audio 3.5mm headphone plug, 3.5mm microphone plug, HDMI, internal speaker, internal microphone
Network WiFi 802.11 b/g/n (Realtek RTL8188ETV)
Storage µSD
USB 1 USB2.0 Host, 1 USB2.0 OTG
Camera 0.3MP (640x480) front, 1.3MP (1280x1024) rear with flash

This page needs to be properly filled according to the New Device Howto and the New Device Page guide.

Contents

Identification

This section explains how to most easily identify your device. For a development board, explain the name(s) printed on the board. For an android device, find out the strings as reported under settings.

It seems as if the design for the A70x was sold to many different manufacturers. It presents as a number of different brands, the original designer seems difficult to determine. Some have also tweaked the design adding bluetooth support or switching to the A23 chip. As a successful device other manufacturers have also started marketing completely different products as the A70x.

A few manufacturers found:

* Accessory Plus
* Shenzhen Qual Technology
* Shenzhen Reborn Technology

On the back of the device, the following is printed:

Manufacturer Marketing Name
ModelNumber

The PCB has the following silkscreened on it:

LIA-BB-V6.66
1970-01-01

In android, under Settings->About Tablet, you will find:

  • Model Number: A70X
  • Build Number: A70X 4.2.2 JDQ39 20131119 release-keys

Sunxi support

Current status

Not supported as u-boot patch is missing.

Manual build

You can build things for yourself by following our Manual build howto and by choosing from the configurations available below.

U-Boot

Sunxi/Legacy U-Boot

Use the MANUFACTURER_DEVICE build target.

Mainline U-Boot

Use the MANUFACTURER_DEVICE build target.

Linux Kernel

Sunxi/Legacy Kernel

Use the a70x.fex file.

Mainline kernel

Use the FAMILY-CHIP-DEVICE.dtb device-tree binary.

Tips, Tricks, Caveats

Add MANUFACTURER DEVICE specific tips, tricks, Caveats and nice to have changes here.

FEL mode

The rear button triggers FEL mode.

You need UART connected, Send "2" over the serial link, by holding down "2" on your keyboard.

Meminfo

Running a10-meminfo-static returned:

dram_clk          = 360
dram_type         = 3
dram_rank_num     = 1
dram_chip_density = 2048
dram_io_width     = 16
dram_bus_width    = 32
dram_cas          = 9
dram_zq           = 0x12b73b7f
dram_odt_en       = 0
dram_tpr0         = 0x42d899b7
dram_tpr1         = 0xa090
dram_tpr2         = 0x22a00
dram_tpr3         = 0x0
dram_emr1         = 0x4
dram_emr2         = 0x10
dram_emr3         = 0x0

But no patch was apparently ever sent into the mailing list.

I2C pads

The pads circled in yellow are in slightly different positions on some later versions of the board. They are sometimes screen printed SCK and SDA- Possibly i2c?

Adding a serial port (voids warranty)

A70x UART pads

Device disassembly

Insert your plastic tool between the front and back covers, and push the back cover outwards, you should soon hear the clips pop. Start at the corner nearest the loudspeaker.

Locating the UART

The UART pads are located next to the SOC. Solder on some wires according to our UART howto.

Pictures

Take some pictures of your device, upload them, and add them here. DO NOT UPLOAD PICTURES WHICH YOU PLUCKED OFF THE INTERNET.

Also known as

  • This device is often sold as the "Q88 Pro".
  • Eken X70

See also

Manufacturer images

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