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

This device uses the pretty popular MID formfactor, like the A710 and A721, but instead comes with an A13 based mainboard.

Identification

Along rt713
Manufacturer	Along
Dimensions	196mm x 120mm x 10mm
Release Date	May 2012
Website	Rebadger Product Page
Specifications
SoC	A13 @ 1Ghz
DRAM	512MiB DDR3 @ 408MHz
NAND	4GB
Power	DC 5V @ 2.5A, 2800mAh 3.7V Li-Ion battery
Features
LCD	800x480 (7" 16:9)
Touchscreen	5-finger capacitive/resistive (FocalTech ft5x FIXME)
Audio	3.5mm headphone plug, internal speaker, internal microphone
Network	WiFi 802.11 b/g/n (Realtek RTL8188EUS)
Storage	µSD
USB	1 USB2.0 OTG
Camera	0.3MP (640x480) front
Other	Accelerometer (Freescale MMA7660)
Headers	UART

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

Model Number: eXagerate XZPAD700
Build Number: exg_eb-ita 4.0.4 HML 20121122

Sunxi support

Current status

Supported but there are some issues with the touchscreen driver.

Images

HW-Pack

BSP

Manual build

For building u-boot, use the "xzpad700" target.
The .fex file can be found in sunxi-boards as xzpad700.fex

Everything else is the same as the manual build howto.

Tips, Tricks, Caveats

FEL mode

The VOL+ button triggers FEL mode.

Touchscreen

As of 3.4.103 the ft5x GPL touchscreen driver seems to work right. Save a look at the Touchscreen page for more details on inverting or exchanging axix.

CSI Connector Pin-Out

On board version 2.0 2012.10.01 this is the pin-out of the CSI connector

CSI Connector PIN	A13 PIN	A13 PIN NAME
1
2	GND	GND
3
4
5
6
7	117	PE3
8
9	116	PE2
10
11
12	125	PE11
13	115	PE1
14	124	PE10
15	GND	GND
16	123	PE9
17	114	PE0
18	122	PE8
19	118	PE4
20	121	PE7
21	119	PE5
22	120	PE6
23	GND	GND
24	GND	GND

The ones left out are not directly connected to the A13 but may be connected to power, reference voltages or other stuff that could damage the A13 if connected to the I/O pins.

Adding a serial port (voids warranty)

DEVICE UART pads

Device disassembly

There are 4 screws which need to be removed first. 2 on the connector side and 2 on the opposite side. Use your plastic tool to carefully release all the clips by pushing the back cover inwards. Go over all 4 sides. When opening up the device, be careful as the speaker is attached to the rear cover.

Locating the UART

Although the fex file has evidence that at some time pins PG3 (pin 152) and PG4 *pin 151) were used for an UART port, this may date back to prototyping and may have been physically removed from the production units as I was unable to track down any test pads physically connected to these pins. In the process of attempting to track these test pads I blew a USB serial adapter cable because of the high voltages (up to 24V) present on some test pads so be warned that if you want to double check whether I missed something you should keep clear from the following test pads: TP36, TP73, TP74, TP76.

If you really need to have a serial console to this device while still using the uSD this is how I suggest you you go about it:

take off the CSI camera sensor
disable csi from the fex
remap uart to use pins PE11 (RX) and PE10 (TX)
connect the uart to the CSI flext cale connector pins 12 (RX), 14 (TX) and any of 2 15 23 or 24 as GND

Where TX and RX are referred to the rt713 side and the CSI connector pin 24 is the closest to the pcb edge (Vol +).

Have a look at the UART howto for more details on hooking op a serial console.

I've checked and I was able to get the serial console to partially work by using this fex configuration: rt713_remap_csi2uart.fex. I was able to receive on the PC output sent by the A13 but I was unable to send data to A13. Can anybody double check if I did things right with the fex ? I've checked that PE11 is actually connected to pin 12 on the CSI connector by configuring that pin for GPIO and testing voltage with a multimeter while switching it at it worked right. Not sure if I did something else wrong or if my unit is damaged.

If you actually solder the uart to a spare flect cable, open up the device without leaving evidence of you doing that and keep the original script.bin I think it would not void your warranty!