[Data sharing] WebEx for 4412 Development Board Interface detailed (a)

Development Board Platform Brief Introduction

Core board

The Exynos4412 is available in two packages, in which the POP -encapsulated chip contains 1GB of memory, so no external DDR is required.

Can greatly save PCB area, power control is also better, more used in handheld devices; the SCP package has the advantage of memory expansion

More flexible, production processes are relatively easier to control.

the input voltage range of the power chip s5m8767 is 3.5v~5.5v, but the best input voltage is 3.7v~4.2v,

That is , about 4v, so that the s5m8767 chip in the best working condition. Since the power supply provided by the Development Board is 5v , it is recommended that you modify the following two places when developing the product:

1) Add the DC to the base plate to the core board to work around 4v , as shown in 1-1.1, in the circuit,

Turn VSYS(5v) into vsys_k(4v) and use Vsys_k powering the core board

2) the VSYS of the 1,2,3,4,5,6 pin on the CON10(connecting seat to the core board) on the backplane is provided to the core board by default 5V voltage, as shown in 1-1.2 :

Need to change the CON10 1,2,3,4,5,6 These pins to vsys_k, to the core board to provide 4V Voltage, such as

as shown in 1-1.3:

POP Package

Length width:5CM * 6CM, height 1.5MM, 4 pin (*+);

Onboard 1GB memory, power management;

When assembling with the baseplate, note the "anti-stick Arrow".

1.1.1.2 SCP Package

Length width:6CM * 7CM, height 1.5MM, 4 pin (*+);

SCP onboard 1G or 2G memory, power management;

When assembling with the baseplate, note the "anti-stick Arrow".

Floor

iTOP-4412 All-in- all board as shown:

Power and interface

The power supply chip RT8065 provides 5V→4V power supply, 8707 power supply chip to the core board . Core board power supply parts such as

, it is recommended to provide 4V power to the core board, which can make the core board power management chip 8767 in the best working condition, the principle

The figure is shown below.

The Development Board power schematic section is as follows.

As shown, the position of the 5V→4V power supply on the backplane.

Power Chip MP2012DQ offers 5V→3.3V and 5V→ 1.8V power supply, powering most peripheral modules.

As shown, the position of the 5V→3.3V and 5V→1.8V power supply on the backplane.

As shown, for the Power interface, power switch, Power LED schematic, the power supply needs to input 5V power.

As shown, the power supply connector, the power switch, the power led position on the backplane.

Power-on press the Power key and the LED1 will light, indicating a supply input.

OTG Interface

The OTG interface is used to burn the image and can also be used as a debug port for Android app apps . On the Android system

The following can be used to upload files and install the app(it works well without a network).

The schematic diagram is shown.

The OTG Interface on the PCB , as shown in.

USB Interface

the USB interface can be used to connect the mouse and keyboard. can also be used to connect PL2303 to extend the serial port, but need

To load the PL2303 driver, refer to the manual 9.4.12 for the specific loading method .

The schematic diagram is shown.

The USB Interface on the PCB , as shown in

WIFI/BT Module

Users should pay attention to distinguish,wifi/bt module is GT-900, the chip in the module is s500m.

The schematic diagram is shown.

WIFI/BT The module position on the PCB as shown in.

TF and SD Card Interface

All-in-one version can use TF card or SD Card, two options, for burning the system or storing data, burning system in the third

Chapter has a detailed introduction, the use of stored data similar to the TF card in the phone .

Here is a reminder thatTF cards and SD cards are not only PCB package, but also the schematic package is not the same, although they

The number of pin pins is the same.

The schematic diagram is shown.

on The PCB, the TF card and SD card interface, as shown in.

1.1.2.6 Gyroscope Gyroscope, accelerometer Accelerometer module

This module is a gyroscope and accelerometer two in one.

The schematic diagram is shown.

PCB on the gyroscope + Accelerometer module as shown in.

3G Module

the schematic diagram of the 3G module is shown in.

The 3G module on the PCB as shown in.

[Data sharing] WebEx for 4412 Development Board Interface detailed (a)