INET-3FTD

Allwinner A10-based tablet board. This one belongs to the INET's 3Fxx board family.

PCB Label
INET-3FTD-REV01 Zeng-gc 2012-08-28

Settings information
While running stock Android under Settings > About tablet the following entries can be seen for Polaroid MIDC907: Model number: MIDC497 Android version: 4.0.4 Baseband version: 1.5_121116 Kernel version: 3.0.8+ inet_dada@inetsuperserver #98 Fri Nov 16 17:07:47 CST 2012 Build number: Polaroid

build.prop information
ro.build.description=crane_inet-eng 4.0.4 IMM76D 20121116 test-keys ro.build.fingerprint=iNet/crane_inet/crane-inet:4.0.4/IMM76D/20121116:eng/test-keys

System memory layout
This is a printout from /proc/iomem for the default rom with stock kernel.

01c03000-01c04000 : sw_nand 01c09000-01c09fff : sun4i_csi.0 01c09000-01c09fff : sun4i_csi.0 01c0a000-01c0afff : disp 01c0c000-01c0cfff : disp 01c0d000-01c0dfff : disp 01c0f000-01c0ffff : sunxi-mmc.0 01c0f000-01c0ffff : sunxi-mmc 01c16000-01c165ff : hdmi 01c1b000-01c1bfff : disp 01c22c00-01c22c40 : sun4i-codec 01c22c00-01c22c3f : sun4i-codec 01c28000-01c283ff : sunxi-uart.0 01c28000-01c2801f : serial 01c2ac00-01c2afff : sun4i-i2c.0 01c2ac00-01c2afff : sun4i-i2c.0 01c2b000-01c2b3ff : sun4i-i2c.1 01c2b000-01c2b3ff : sun4i-i2c.1 01c2b400-01c2b7ff : sun4i-i2c.2 01c2b400-01c2b7ff : sun4i-i2c.2 01c40000-01c40097 : Mali-400 GP 01c41000-01c4102f : Mali-400 L2 cache 01c42000-01c42027 : Mali-400 PMU 01c43000-01c43023 : Mali-400 MMU for GP 01c44000-01c44023 : Mali-400 MMU for PP 01c48000-01c490ef : Mali-400 PP 01e00000-01e0077f : disp 01e20000-01e2077f : disp 01e40000-01e457ff : disp 01e60000-01e657ff : disp 01e80000-01e8ffff : g2d 01e80000-01e8ffff : g2d 40000000-5bffffff : System RAM 4002f000-40772763 : Kernel text 40774000-4097e237 : Kernel data 5c000000-5fffffff : Mali Sdram 60000000-7fffffff : System RAM

Side buttons
With the board powered off, hold Volume+ (HOME button on the key-panel), then hold the power button for about 2 seconds, release it and press at least 3 times immediately.

UBOOT button
There is an unpopulated UBOOT switch/button connector. You can either short the pads and power the board on, or solder a switch/button and turn/press it before powering the board on.

NAND storage upgrade (voids warranty)
Some INET-3FTD boards have an unused NAND chip slot which you can use to upgrade the board's storage capacity. There are two known supported NAND chips:
 * Micron 29F32G08CBACA
 * Hynix H27UCG8T2ATR

These are SMD components, so standard SMD soldering advices apply.

Power supply
This board supports independent 5V charging with a barrel-shaped plug connector.

Reset button
This board can be rebooted with a single press of the on-board RESET button.

Unused motor connector
There is an unused motor connector that can be enabled by editing the FEX configuration file.

Device disassembly
Unscrew the two screws located on the bottom port panel. Use your plastic tool to pry-open the device's cover - it is advised to start with one of the corners to minimize the risk of damaging the LCD screen while opening the device.

Locating the UART
UART connector pads are visible on the board front pictures. They are clearly silk-screened on the PCB, but hidden under the touch digitizer flex cable. Unplug the flex cable to gain access to the pads. Cables can be soldered according to our UART howto.

Also known as

 * Polaroid MIDC907
 * MyPhone MyTab 10
 * DragonTouch E97
 * DX Q91

= Images =

= See also =
 * Inet 3fbt is a 3Fxx family board with bluetooth module.
 * Inet 3f is the bare-bones of 3Fxx family board.