RK3568 Android Decoding Drive All-In-One Board Specification
(Model: RK3568-G31)

Chapter one the Product Overview
1.1 、 General
RK3568 Android all-in-one board, using Ruixin micro-quad-core RK3568 and internal integrated NPU chip solution. RK3568 is a 64-bit CPU based on quad-core Cortex-A55 with a new 22nm process; main frequency up to 2.0GHz; supports Google Android 11.0 operating system; GPU adopts Mali G52 2EE, supports mainstream audio and video formats and picture decoding; The RK3568 has an integrated AI neural network processor NPU with a computational power of up to 0.8 TOPS, and supports a variety of AI development tools and interfaces. Conducive to processing massive multimedia data such as videos and images, providing a strong foundation for machine deep learning; rich onboard interfaces and I/O, rich and flexible connectivity and scalability, support for commonly used external devices; rich interfaces, stable performance, can meet different scenario requirements;
1.2 、 Characteristics
u High performance: RK3568 is a 64-bit CPU based on the quad-core A55 using the new 22nm process, with a main frequency of up to 2.0GHz. It has super general computing performance. The GPU adopts Mali G52 2EE, and the CPU integrates the AI neural network processor NPU, which has a computing performance of up to 0.8TOPS. It is conducive to processing massive multimedia data such as videos and images, and provides a strong foundation for machine deep learning.
u High stability: The RK3568 Android all-in-one board adds its own unique technology in hardware and software to ensure the stability of the product, which can make the final product unattended for 7 * 24 hours.
u High integration: The RK3568 Android all-in-one board integrates Ethernet, WiFi, Bluetooth, 4Ω/18W amplifier, built-in 4G/5G module interface, IR remote control function, LVDS, eDP, MIPI screen, microphone, gravity sensing, GPS and other functions, greatly simplifying the design of the whole machine. The ultra-thin motherboard design can make the whole machine design more beautiful.
u Rich interface: Support USB2.0/USB3.0 port, serial port, I2C interface, GPIO, headphone, ADC, etc., can expand more peripheral devices. It can meet the needs of common peripherals on the market, such as serial card swiping equipment, printing equipment, audio and video acquisition equipment, and so on.
u System customization: Support Android system optimization customization, provide system call interface API reference code.
Chapter 2 Schematic Diagram of Appearance and Interface


Chapter III List of basic specifications and features
3.1 、 Basic hardware specifications, features
| CPU | Rockchip RK3568 (22nm process) Arm Quad-Core Cortex-A55, 64-bit processor Frequency up to 2.0GHz |
| GPU | Mali G52 2EE GPU Supports OpenGL ES 1. 1/2 .0/3.2, OpenCL 2.0, Vulkan 1. 1 Embedded high-performance 2D acceleration hardware |
| Memory | LPDDR4 2G (4G/8G optional) |
| Built-in storage capacity | eMMC 16GB (8G/32G/64G/128g/256G optional) |
| networks | Support RJ45 100 megabit network port, support Ethernet |
| Support 2.4G WiFi, support Wi-Fi 802.11b/g/n protocol |
| Support 5G dual-band WiFi |
| Support Bluetooth function, V2.1 + EDR/Bluetooth 3.0/3 .0 + HS/4.0 |
| Support 4G/5G function, support full network (optional) |
| GPS Navigation | Built-in GPS module, sensitivity: -159dBm, reception frequency: 1575.42MHz, satellite channel: 20 channels, positioning accuracy: < 10m (optional) |
| Image Rotation | Supports 0°, 90°, 180°, 270° manual rotation Support gravity induction automatic screen transfer function (optional) |
| Show interfaces | 1 * eDP interface (eDP1.3, 2lanes with 5.4Gbps), supports 3.3V/5V/12V power supply 1 * LVDS interface (single/dual, 6-bit/8-bit), supports 7 "- 108" displays, supports up to 1080p 60Hz output, support 3.3V/5V/12V power supply 1 * MIPI screen interface, up to 1080p 60Hz output support dual-screen display function |
| Audio Interface | 1 * Speaker Out (2 * 18W 4R THD < 10%) 1 * Headphone Out/In 1 * Microphone Input |
| Hardware Watchdog | Support for hardware watchdogs |
| Touch screen interface | 1 * I2C interface (supports multi-point resistive touch, multi-point capacitive touch) Support USB multi point infrared touch, multi point capacitive touch, multi point nano film touch, multi point acoustic wave touch, multi point optical touch, etc. |
| Camera connector | Support 800W-USB camera (optional) |
| RTC | Built-in real-time clock-powered battery, supports timing switch |
| USB | 5*USB-2.0 ,1*USB-3.0 OTG |
| PCIe | 1 * Mini PCIe (for 4G modules) |
| SIM | 1 * SIM card holder for use with Mini PCIe expansion 4G module |
| Infrared reception | 1 * Infrared receiver, supports infrared remote control function, supports remote control boot |
| LED | 1 * Power status led (red), 1 * System led (blue, blinking by default) |
| Keystroke | 1 * Reset key, 1 * Power key, 1 * Upgrade key |
| Serial port | 6*UART (2*RS232/RS485 、2*TTL/RS232 、2*TTL/RS485) |
| IO port | 4 * IO port, support input or output |
| Recommended Power Adapter | Input: AC100-240V, 50-60Hz, Output: DC12V, 5.5mm/2. 1mm DC head 2A-5A (Requires surge voltage less than 18V, ripple voltage less than 100mV) |
3.2 、 Basic software specifications, features
| OPERATING SYSTEM | Android 11、Android 14 |
| Audio | MP3, WMA, WAV, ape, FLAC, AAC, OGG, M4A, 3GPP and other formats |
| Videos | Support 1080p/2160P/4K multi-video decoding in H.265, H.264, VP8, MAV, WMV, AVS, H.263, MPEG4 and other video formats |
| Images | Supports browsing in various image formats such as JPG, BMP, PNG and supports rotation/slide play/image enlargement |
| The system comes with its own application software | APK Installer, Email, Calculator, Browser, Recorder, Calendar, Settings, Clock, Video Player, Search, Contacts, Gallery, Download, Camera, Music, Explorer |
| Language Support | many languages |
| Input method | Standard Andriod keyboard with optional third-party input (Chinese, Korean, Japanese, etc.) |
| System Management | Native Android system, open root permissions, can be customized for product development |
| Real-time remote monitoring, system crash recovery, 7 * 24 hours unattended |
| Support OTA remote upgrade |
| Support wifi display |
| System Watchdog | Support for software watchdogs |
3.3 、 Working, storage environment
| Operating ambient temperature | -25 ℃ ~ 70 ℃, -5 ℃ ~ 40 ℃ recommended |
| Working environment humidity | 10% to 90%, non-condensing |
| Storage Temperature | -30 ℃ ~ 75 ℃, it is recommended to store at room temperature |
Chapter IV PCBA Construction
4.1 、 PCBA 寸法図

4.2 、 Specification parameters
Motherboard size: 135 * 80 * 12mm
Board height: front ≤ 8mm, back ≤ 3mm
Number of PCB layers: 8 layers
PCB size: 135 * 80 * 1.6mm
PCB Color: Green
PCB Process: Immersion gold
Screw hole specification: Φ3mm * 4
Chapter Five Interfaces
5.1 、 Interface Instructions
5.1.1 、 12V Power Input Interface (4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | GND | Earth | Earth |
| 2 | GND | Earth | Earth |
| 3 | 12V_IN | Power Supply | 12V power supply |
| 4 | 12V_IN | Power Supply | 12V power supply |
5.1.2 、 LVDS Screen voltage cap jumper interface (6PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 12V | Power Supply | 12V output |
| 2 | LVDS-VDD-IN | Power Supply | LVDS voltage input |
| 3 | 5V | Power Supply | 5V output |
| 4 | LVDS-VDD-IN | Power Supply | LVDS voltage input |
| 5 | 3.3V | Power Supply | 3.3V output |
| 6 | LVDS-VDD-IN | Power Supply | LVDS voltage input |
5.1.3 、 LVDS Screen interface (2x15PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | POWER | Power Supply | Screen power output 3.3V/5V/12V The specific voltage is selected by the skip cap |
| 2 | POWER | Power Supply |
| 3 | POWER | Power Supply |
| 4 | GND | Earth | Earth |
| 5 | GND | Earth | Earth |
| 6 | GND | Earth | Earth |
| 7 | LVDS-A-D0N | Output | Negative data output |
| 8 | LVDS-A-D0P | Output | Data Output Positive |
| 9 | LVDS-A-D1N | Output | Negative data output |
| 10 | LVDS-A-D1P | Output | Data Output Positive |
| 11 | LVDS-A-D2N | Output | Negative data output |
| 12 | LVDS-A-D2P | Output | Data Output Positive |
| 13 | GND | Earth | Earth |
| 14 | GND | Earth | Earth |
| 15 | LVDS-A-CLKN | Output | Negative data output |
| 16 | LVDS-A-CLKP | Output | Data Output Positive |
| 17 | LVDS-A-D3N | Output | Negative data output |
| 18 | LVDS-A-D3P | Output | Data Output Positive |
| 19 | LVDS-B-D0N | Output | Negative data output |
| 20 | LVDS-B-D0P | Output | Data Output Positive |
| 21 | LVDS-B-D1N | Output | Negative data output |
| 22 | LVDS-B-D1P | Output | Data Output Positive |
| 23 | LVDS-B-D2N | Output | Negative data output |
| 24 | LVDS-B-D2P | Output | Data Output Positive |
| 25 | GND | Earth | Earth |
| 26 | GND | Earth | Earth |
| 27 | LVDS-B-CLKN | Output | Negative data output |
| 28 | LVDS-B-CLKP | Output | Data Output Positive |
| 29 | LVDS-B-D3N | Output | Negative data output |
| 30 | LVDS-B-D3P | Output | Data Output Positive |
5.1.4 、 BAT Battery Interface (2PIN/1.25)
| No. | Definition | Attribute | Description |
| 1 | BAT+ | Masukkan | 3.3V input |
| 2 | GND | Earth | Earth |
5.1.5 、 ADC Conversion Interface (2PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | AD1 | Masukkan | ADC Input |
| 2 | GND | Earth | Earth |
5.1.6 、 Screen backlight interface (6PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 12V | Power Supply | 12V output |
| 2 | 12V | Power Supply | 12V output |
| 3 | BLEN | Output | Backlight Enabled (5V) |
| 4 | ADJ | Output | Backlight brightness adjustment (0 ~ 5V) |
| 5 | GND | Earth | Earth |
| 6 | GND | Earth | Earth |
5.1.7 、 I2C Touch screen interface (6PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 3V3 | Power Supply | 3.3V output |
| 2 | INT | Connectors and Input/Output | Interrupt data |
| 3 | RST | Connectors and Input/Output | Reset data |
| 4 | SCL | Connectors and Input/Output | IIC Clock |
| 5 | SDA | Connectors and Input/Output | IIC Data |
| 6 | GND | Earth | Earth |
5.1.8 、 GPIO Interface6PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 3V3 | Power Supply | 3.3V output |
| 2 | IO1 | Connectors and Input/Output | Default Output Low |
| 3 | IO2 | Connectors and Input/Output | Default Output High |
| 4 | IO3 | Connectors and Input/Output | Default input low level |
| 5 | IO4 | Connectors and Input/Output | Default input low level |
| 6 | GND | Earth | Earth |
5.1.9 、 ttyS8 Serial interface(TTL/RS485-4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 3/5V | Power Supply | 3.3V (default)/5V output |
| 2 | TX8A | Connectors and Input/Output | Send (default)/RS485-A |
| 3 | RX8B | Connectors and Input/Output | Receive (default)/RS485-B |
| 4 | GND | Earth | Earth |
5.1.10 、 ttyS6 Serial interface(TTL/RS485-4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 3/5V | Power Supply | 3.3V (default)/5V output |
| 2 | TX6A | Connectors and Input/Output | Send (default)/RS485-A |
| 3 | RX6B | Connectors and Input/Output | Receive (default)/RS485-B |
| 4 | GND | Earth | Earth |
5.1.11、 Button interface (4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | KEY | Masukkan | Upgrade Button/Volume + |
| 2 | RST | Masukkan | Reset button |
| 3 | PWR | Masukkan | Power Button |
| 4 | GND | Earth | Earth |
5.1.12 、 eDP Screen interface (30PIN/0.5)
| No. | Definition | Attribute | Description |
| 1 | NC | | |
| 2 | VDD | Backlight power supply | 12V |
| 3 | VDD | Backlight power supply | 12V |
| 4 | VDD | Backlight power supply | 12V |
| 5 | VDD | Backlight power supply | 12V |
| 6 | NC | | |
| 7 | NC | | |
| 8 | PWM | Output | Backlight adjustment 0 ~ 5V |
| 9 | BLEN | Output | Backlight Enable 5V |
| 10 | GND | Earth | Earth |
| 11 | GND | Earth | Earth |
| 12 | GND | Earth | Earth |
| 13 | GND | Earth | Earth |
| 14 | HPD | Masukkan | HPD Test Pins |
| 15 | GND | Earth | Earth |
| 16 | GND | Earth | Earth |
| 17 | NC | | |
| 18 | VCC | Power Supply | 3.3V |
| 19 | VCC | Power Supply | 3.3V |
| 20 | GND | Earth | Earth |
| 21 | EDP-AUXN | Output | Negative data output |
| 22 | EDP-AUXP | Output | Data Output Positive |
| 23 | GND | Earth | Earth |
| 24 | EDP-D0P | Output | Data Output Positive |
| 25 | EDP-D0N | Output | Negative data output |
| 26 | GND | Earth | Earth |
| 27 | EDP-D1P | Output | Data Output Positive |
| 28 | EDP-D1N | Output | Negative data output |
| 29 | GND | Earth | Earth |
| 30 | NC | | |
5.1.13 、 LED/IR(Remote Control and Indicators)Interface6PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 3.3V | Power Supply | 3.3V output |
| 2 | IR | Masukkan | Infrared signal input |
| 3 | GND | Earth | Earth |
| 4 | PLED | Output | Power Indicator (Red) Light Positive |
| 5 | SLED | Output | System Indicator (Green) Light Positive |
| 6 | GND | Earth | Earth |
5.1.14 、 ttyS5 Serial interface(TTL/RS232-4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 5/3V | Power Supply | 5V (default)/3.3V output |
| 2 | TX5 | Output | Send |
| 3 | RX5 | Masukkan | Receive |
| 4 | GND | Earth | Earth |
5.1.15 、 ttyS7 Serial interface(TTL/RS232-4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 5/3V | Power Supply | 5V (default)/3.3V output |
| 2 | TX7 | Output | Send |
| 3 | RX7 | Masukkan | Receive |
| 4 | GND | Earth | Earth |
5.1.16 、 USB 2.0-HOST Interface4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 5V | Power Supply | 5V output |
| 2 | DM | Connectors and Input/Output | Data negative |
| 3 | DP | Connectors and Input/Output | Data positive |
| 4 | GND | Earth | Earth |
5.1.17 、 USB 2.0 Interface4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 5V | Power Supply | 5V output |
| 2 | DM | Connectors and Input/Output | Data negative |
| 3 | DP | Connectors and Input/Output | Data positive |
| 4 | GND | Earth | Earth |
5.1.18 、 USB 2.0 Interface4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 5V | Power Supply | 5V output |
| 2 | DM | Connectors and Input/Output | Data negative |
| 3 | DP | Connectors and Input/Output | Data positive |
| 4 | GND | Earth | Earth |
5.1.19 、 USB 2.0 Interface4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | 5V | Power Supply | 5V output |
| 2 | DM | Connectors and Input/Output | Data negative |
| 3 | DP | Connectors and Input/Output | Data positive |
| 4 | GND | Earth | Earth |
5.1.20 、 RS232/RS485 Toggle jumping cap
the RS232 and RS485 functions of ttyS3 and ttyS4 are switched by the following two groups of hats: the function of switching ttyS3 in the red box and the function of switching ttyS4 in the green box.

a. ttyS3 switches to RS232 function, cap-skipping is as follows:

b. ttyS3 switches to RS485 function, cap-skipping reference is as follows:

c. ttyS4 switches to RS232 function, cap-skipping reference is as follows:

d. ttyS4 switches to RS485 function, cap-skipping reference is as follows:

5.1.21 、 RS485/RS232(ttyS4)Interface
| No. | Definition | Attribute | Description |
| 1 | GND | Earth | Earth |
| 2 | RX4/B | Connectors and Input/Output | Receive/485-B |
| 3 | TX4/A | Connectors and Input/Output | Send/485-A |
| 4 | 5V | Power Supply | 5V output |
5.1.22 、 RS485/RS232(ttyS3)Interface
| No. | Definition | Attribute | Description |
| 1 | GND | Earth | Earth |
| 2 | RX3/B | Connectors and Input/Output | Receive/485-B |
| 3 | TX3/A | Connectors and Input/Output | Send/485-A |
5.1.23 、 POE Power supply interface4PIN/1.25)
| No. | Definition | Attribute | Description |
| 1 | VA1 | Output | RJ45 PIN1 & PIN2 Tap |
| 2 | VA2 | Output | RJ45 PIN3 & PIN6 Tap |
| 3 | VB1 | Output | RJ45 PIN4 & PIN5 taps |
| 4 | VB2 | Output | RJ45 PIN7 & PIN8 Tap |
5.1.24 、 Microphone Interface (2PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | MIC+ | Masukkan | Mic positive input |
| 2 | GND | Masukkan | Mic negative input |
5.1.25 、 Speaker Output Interface (4PIN/2.0)
| No. | Definition | Attribute | Description |
| 1 | LP | Output | Left Channel Output Positive |
| 2 | LN | Output | Left Channel Output Negative |
| 3 | RN | Output | Right channel output negative |
| 4 | RP | Output | Right Channel Output Positive |
5.1.26 、 MIPI Screen interface (31PIN/0.3)
| No. | Definition | Attribute | Description |
| 1 | LED+ | Backlight power supply | Backlight Positive |
| 2 | LED+ | Backlight power supply | Backlight Positive |
| 3 | LED+ | Backlight power supply | Backlight Positive |
| 4 | GND | Earth | Earth |
| 5 | LED- | Backlit ground | Backlight Negative |
| 6 | LED- | Backlit ground | Backlight Negative |
| 7 | LED- | Backlit ground | Backlight Negative |
| 8 | LED- | Backlit ground | Backlight Negative |
| 9 | GND | Earth | Earth |
| 10 | GND | Earth | Earth |
| 11 | MiPi-D2P | Output | Data Output Positive |
| 12 | MiPi-D2N | Output | Negative data output |
| 13 | GND | Earth | Earth |
| 14 | MiPi-D1P | Output | Data Output Positive |
| 15 | MiPi-D1N | Output | Negative data output |
| 16 | GND | Earth | Earth |
| 17 | MiPi-CLKP | Output | Data Output Positive |
| 18 | MiPi-CLKN | Output | Negative data output |
| 19 | GND | Earth | Earth |
| 20 | MiPi-D0P | Output | Data Output Positive |
| 21 | MiPi-D0N | Output | Negative data output |
| 22 | GND | Earth | Earth |
| 23 | MiPi-D3P | Output | Data Output Positive |
| 24 | MiPi-D3N | Output | Negative data output |
| 25 | GND | Earth | Earth |
| 26 | NC | NC | NC |
| 27 | RESET | Output | Reset |
| 28 | NC | NC | NC |
| 29 | VDDIO1.8V | Output | VDD1.8V |
| 30 | VDD3.3V | Output | VDD3.3V |
| 31 | VDD3.3V | Output | VDD3.3V |
5.2 、 Remaining standard interfaces and features
| Name | Seat Specifications | Description |
| DC 12V power connector | DC-5.5 * 2. 1mm female | 12V power input |
| Headphone jack connector | GB headphone holder | L 、R 、MIC 、GND |
| Ethernet interface | RJ45 connector | 10/100M Adaptive Ethernet |
| USB-3.0 connector | Standard USB-3.0 interface | Host Mode USB-3.0 |
| Upgrade button | Non-Self-Locking Buttons | UBOOT Button |
| USB-2.0 connector | Standard USB-2.0 interface | Host Mode USB-2.0 |
| SIM card holder | Standard Nano SIM Holder | Full NetConnect support |
| WiFi antenna pedestal | IPEX- Generation 1 male | WiFi/Bluetooth antenna |
| GPS antenna pedestal | IPEX- Generation 1 male | GPS antenna |
| 4G antenna pedestal | IPEX- Generation 1 male | 4G Antenna |
5.3 、 PIN Footer number

Chapter 6 Notice
Wear electrostatic protection tools such as electrostatic bracelets when ▲ touching the motherboard (good grounding is required);
▲ Do not operate live assembly, wiring, etc.;
▲ Please check the definition of the motherboard interface and the definition of the peripheral interface, and there must be no error or reverse connection.
▲ Please fix the motherboard with M3 flat head screws, do not use countersunk head and large size screws; pay attention to avoid deformation and bending of the motherboard when twisting the screws;
▲ Pay attention to IO port, serial port, enable pin and other level matching;
▲ Pay attention to the power of the external screen. If the power is large, consider external power supply;
▲ Pay attention to the overall power of the product and select a power supply with sufficient power;