SOM-RK3399 Dev Kit

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1 Introduction

Overview
Front
Back
  • The SOM-RK3399 is a 260-pin high performance ARM module designed and developed by FriendlyElec. It is based on Rockchip’s 64-bit hexa-core RK3399 SoC. The regular version has 2GB DDR3 RAM, 16GB Flash, onboard 2x2 MIMO dual-antenna WiFi module. Its dimension is 69.6 x 50 mm. It has a TypeC power port and USB-C display port, and can work by itself without a carrier board.
  • The SOM-RK3399 module has various interfaces and ports. It can drive a 4-channel NVMe high speed SSD hard disk by working with a carrier board and the read/write rate can reach up to 1GB/s. It can drive dual-MIPI WDR cameras. It has an eDP interface, MIPI interface, USB 3.0, two USB 2.0 interfaces and other interfaces such as I2C, I2S, SPI, PWM, GPIO, serial and etc.
  • The SOM-RK3399 can run popular OS systems such as Android 8.1, Ubuntu 18.04, Armbian and Buildroot smoothly. It has well established software support. Especially it has NN SDK packages for neural networks in Android 8.1, VPU hardware encoding/decoding in Qt-5.10, and GPU graphic acceleration. It supports development of dynamic GUI with Qt Quick. It is a perfect platform for startups to develop applications and prototypes in facial detection, machine vision, VR, autonomous-driving, deep learning, AI and etc.

2 Hardware Spec

  • CPU Board: SOM-RK3399, 2GB DDR3，16GB eMMC (32/64GB optional)
  • connectivity :
    • IEEE 802.11b/g/n/AC 2x2 MIMO, Wi-Fi
    • Bluetooth 4.1
    • One 10/100/1000M Ethernet Port
    • One MiniPCIe Socket and microSIM slot for 4G LTE module
  • USB
    • One USB Type-C Port
    • 4xUSB3.0 Type-A port
    • 3xUSB2.0 PH2.0 connector
  • Video out
    • One HDMI Type-A， support HDMI 2.0a, supports 4K@60Hz，HDCP 1.4/2.2
    • DisplayPort 1.2 Alt Mode on USB Type-C
    • one eDP 1.3（4-Lane，10.8Gbps）
    • one or two 4-Lane MIPI-DSI
  • Video In/Camera interface
    • One HDMI IN， support 1080p@30fps, 1280x720@60fps video and audio recording
    • one or two 4-Lane MIPI-CSI, up to 13MPix/s，supports simultaneous input of dual camera data
  • Audio
    • One 3.5mm stereo headphone Jack
    • One 3.5mm microphone Jack
    • One PH2.0 connector for microphone
  • One mciroSD card slot
  • One PCIe x4 M.2 Key-M Socket
  • Button: PowerKey, Reset, Recovery, 3xUserKey
  • LED: One Power LED, One user dual color led
  • RTC：CR2032 3V battery holder
  • others: 3xADCs，1xIR-IN，2xI2Cs，2xUARTs，1x8ch-I2S，3xGPIOS，1xSPDIF-TX，1x12V cooling fan interface
  • Power Supply： DC 12V
  • 4-layer PCB

3 Software Features

4 Diagram, Layout and Dimension

SOM-RK3399 Dev Kit 1904-layout.jpg
  • HDMI IN
    • Short J2 to enable HDMI IN. The HDMI IN and MIPI-CSI1 interfaces cannot be used at the same time.
  • MIPI-CSI
0.5mm FPC Connector
MIPI-CSI2 can be configured to MIPI-DSI. To use the MIPI-CSI1 interface, unplug the HDMI cable of the HDMI IN.
Pin# MIPI-CSI1 MIPI-CSI2 Description
1 VCC5V0_SYS VCC5V0_SYS 5V Power ouput
2 VCC5V0_SYS VCC5V0_SYS 5V Power ouput
3 GND GND Return current path
4 VCC_CSI_AF2.8V VCC_CSI_AF2.8V 2.8V Power for VCM
5 VCC_CSI_1.2V VCC_CSI_1.2V 1.2V Power for image sensor core circuit
6 VCC1V8_CAM VCC1V8_CAM 1.8V power for I/O circuit
7 VCC_CSI_2.8V VCC_CSI_2.8V 2.8V power for image sensor analog circuit
8 VCC_CSI_1.0V VCC_CSI_1.0V 1.0V Power for image sensor core circuit
9 I2C1_SCL I2C2_SCL 1.8V I2C clock signal
10 I2C1_SDA I2C2_SDA 1.8V I2C data signal
11 MIPI_CSI0_RST MIPI_CSI1_RST reset camera module
12 MIPI_CSI0_PWN MIPI_CSI1_PWN Power down camera module
13 GND GND Return current path
14 GPIO2_B3_CIF_CLKOUTA GPIO2_B3_CIF_CLKOUTA MCLK to camera module
15 GND GND Return current path
16 MIPI_RX0_D3P MIPI_TX1/RX1_D3P MIPI CSI positive differential data line transceiver output
17 MIPI_RX0_D3N MIPI_TX1/RX1_D3N MIPI CSI negative differential data line transceiver output
18 GND GND Return current path
19 MIPI_RX0_D2P MIPI_TX1/RX1_D2P MIPI CSI positive differential data line transceiver output
20 MIPI_RX0_D2N MIPI_TX1/RX1_D2N MIPI CSI negative differential data line transceiver output
21 GND GND Return current path
22 MIPI_RX0_D1P MIPI_TX1/RX1_D1P MIPI CSI positive differential data line transceiver output
23 MIPI_RX0_D1N MIPI_TX1/RX1_D1N MIPI CSI negative differential data line transceiver output
24 GND GND Return current path
25 MIPI_RX0_CLKP MIPI_TX1/RX1_CLKP MIPI CSI positive differential clock line transceiver output
26 MIPI_RX0_CLKN MIPI_TX1/RX1_CLKN MIPI CSI negative differential clock line transceiver output
27 GND GND Return current path
28 MIPI_RX0_D0P MIPI_TX1/RX1_D0P MIPI CSI positive differential data line transceiver output
29 MIPI_RX0_D0N MIPI_TX1/RX1_D0N MIPI CSI negative differential data line transceiver output
30 GND GND Return current path
  • MIPI-DSI
0.5mm FPC connector
Pin# Assignment Description
1, 2, 3 VCC5V0_SYS 5V power output
4 GND Return current path
5 I2C4_SDA 3V I2C data signal, Connect to touch panel
6 I2C4_SCL 3V I2C clock signal, Connect to touch panel
7 GND Return current path
8 GPIO1_C4_TP_INT 3V interrupt input, Connect to the interrupt output of touch panel
9 GND Return current path
10 PWM0_BL 3V PWM output, for LCD backlight dimming
11 GND Return current path
12 GPIO4_D5_LCD_BL_EN 3V output for turning on/off the LCD backlight
13 GPIO4_D6_LCD_RST_H 3V output for reseting the LCD module
14 GPIO1_B5_TP_RST 3V output for reseting touch panel, Connect to the reset input of touch panel
15 GND Return current path
16 MIPI_TX0_D3N MIPI DSI negative differential data line transceiver output
17 MIPI_TX0_D3P MIPI DSI positive differential data line transceiver output
18 GND Return current path
19 MIPI_TX0_D2N MIPI DSI negative differential data line transceiver output
20 MIPI_TX0_D2P MIPI DSI positive differential data line transceiver output
21 GND Return current path
22 MIPI_TX0_D1N MIPI DSI negative differential data line transceiver output
23 MIPI_TX0_D1P MIPI DSI positive differential data line transceiver output
24 GND Return current path
25 MIPI_TX0_D0N MIPI DSI negative differential data line transceiver output
26 MIPI_TX0_D0P MIPI DSI positive differential data line transceiver output
27 GND Return current path
28 MIPI_TX0_CLKN MIPI DSI negative differential clock line transceiver output
29 MIPI_TX0_CLKP MIPI DSI positive differential clock line transceiver output
30 GND Return current path
  • eDP
Connector P/N: I-PEX-20455-030E
Pin# Assignment Description
1 GND Signal ground
2 EDP_TX3N eDP data lane 3 negative output
3 EDP_TX3P eDP data lane 3 positive output
4 GND Signal ground
5 EDP_TX2N eDP data lane 2 negative output
6 EDP_TX2P eDP data lane 2 positive output
7 GND Signal ground
8 EDP_TX1N eDP data lane 1 negative output
9 EDP_TX1P eDP data lane 1 positive output
10 GND Signal ground
11 EDP_TX0N eDP data lane 0 negative output
12 EDP_TX0P eDP data lane 0 positive output
13 GND Signal ground
14 EDPAUXP eDP CH-AUX positive differential output
15 EDPAUXN eDP CH-AUX negative differential output
16 GND Signal ground
17 VCC3V3_SYS 3.3V Power output for logic
18 VCC3V3_SYS 3.3V Power output for logic
19 I2C4_SDA 3V I2C data signal, Connect to touch panel
20 I2C4_SCL 3V I2C clock signal, Connect to touch panel
21 GPIO1_C4_TP_INT 3V interrupt input, Connect to the interrupt output of touch panel
22 GPIO1_B5_TP_RST 3V output for reseting touch panel, Connect to the reset input of touch panel
23 PWM0_BL 3V PWM output, for LCD backlight dimming. pull up to VCC3V3_SYS on LCD side.
24 GPIO4_D5_LCD_BL_EN 3V output for turning on/off the LCD backlight
25 GND Backlight ground
26 GND Backlight ground
27 GND Backlight ground
28 VCC12V0_SYS 12V Power output for Backlight Power
29 VCC12V0_SYS 12V Power output for Backlight Power
30 VCC12V0_SYS 12V Power output for Backlight Power
  • PCIex4 M.2
PCIe Gen 2.1 x4
M.2 Key M Connector for Socket 2/Socket 3 PCIe-based Module, such as PCIe SSD
Connector P/N: MDT-420-M-01002
Pin# Assignment Description Pin# Assignment Description
1 GND Return current path 2 VCC3V3_SYS 3.3V Power output
3 GND Return current path 4 VCC3V3_SYS 3.3V Power output
5 PCIE_RX3_N PCIe differential data input signals 6 N/C no connection
7 PCIE_RX3_P PCIe differential data input signals 8 N/C no connection
9 GND Return current path 10 N/C no connection
11 PCIE_TX3N PCIe differential data output signals 12 VCC3V3_SYS 3.3V Power output
13 PCIE_TX3P PCIe differential data output signals 14 VCC3V3_SYS 3.3V Power output
15 GND Return current path 16 VCC3V3_SYS 3.3V Power output
17 PCIE_RX2_N PCIe differential data input signals 18 VCC3V3_SYS 3.3V Power output
19 PCIE_RX2_P PCIe differential data input signals 20 N/C no connection
21 GND Return current path 22 N/C no connection
23 PCIE_TX2N PCIe differential data output signals 24 N/C no connection
25 PCIE_TX2P PCIe differential data output signals 26 N/C no connection
27 GND Return current path 28 N/C no connection
29 PCIE_RX1_N PCIe differential data input signals 30 N/C no connection
31 PCIE_RX1_P PCIe differential data input signals 32 N/C no connection
33 GND Return current path 34 N/C no connection
35 PCIE_TX1N PCIe differential data output signals 36 N/C no connection
37 PCIE_TX1P PCIe differential data output signals 38 DEVSLP/NC internal pull up to VCC3V3_SYS with 10K
39 GND Return current path 40 I2C2_SCL 1.8V I2C clock signal
41 PCIE_RX0_N PCIe differential data input signals 42 I2C2_SDA 1.8V I2C data signal
43 PCIE_RX0_P PCIe differential data input signals 44 GPIO2_A2_PCIE_ALERT# 1.8V GPIO signal
45 GND Return current path 46 N/C no connection
47 PCIE_TX0N PCIe differential data output signals 48 N/C no connection
49 PCIE_TX0P PCIe differential data output signals 50 GPIO2_A4_PCIE_RESET# 1.8V GPIO signal
51 GND Return current path 52 CLKREQ#/NC internal pull down to GND with 0R
53 PCIE_REF_CLKN differential reference clock out for PCIe peripheral 54 GPIO2_A3_PCIE_WAKE# 1.8V GPIO signal
55 PCIE_REF_CLKP differential reference clock out for PCIe peripheral 56 N/C no connection
57 GND Return current path 58 N/C no connection
59 Connector Key Connector Key 60 Connector Key Connector Key
60 Connector Key Connector Key 61 Connector Key Connector Key
62 Connector Key Connector Key 63 Connector Key Connector Key
64 Connector Key Connector Key 65 Connector Key Connector Key
66 Connector Key Connector Key 67 N/C no connection
68 RTC_CLKO_SOC 1.8V 32.768KHz clock output 69 N/C no connection
70 VCC3V3_SYS 3.3V Power output 71 GND Return current path
72 VCC3V3_SYS 3.3V Power output 73 GND Return current path
74 VCC3V3_SYS 3.3V Power output 75 GND Return current path
  • PH2.0 connectors(USB2.0 I2C, UART, ADC, IR)
I2C2, I2C3, UART4, and UART_U are 3.3V level; the ADC input range is 0~1.8V; connect IR receiver to the IR IN interface (IR1) directly.
UART_U is an USB to serial UART.
USB2.0 I2C2,I2C3 UART4 UART_U ADC IR IN
Pin# Assignment Pin# Assignment Pin# Assignment Pin# Assignment Pin# Assignment Pin# Assignment
1 5V 1 GND 1 GND 1 GND 1 GND 1 DATA
2 DM 2 SDA 2 RX 2 CTS 2 1.8V out 2 GND
3 DP 3 SCL 3 TX 3 RTS 3 ADC0 3 3.3V
4 GND 4 5V 4 5V 4 RX 4 ADC2
5 TX 5 ADC3
6 5V
  • Microphone
The 3.5mm headphone jack (MIC1) and the PH2.0 connector (MIC2) are the same microphone input. When the 3.5mm headphone jack is inserted, the signal of the PH2.0 connector is disconnected.
  • Power Supply
Two power input connectors, 5.5*2.1 DC socket and 4Pin PC power socket(Molex 5566-04A, or compatible).
J1 is the power-on mode select jumper. If open, CPU board is automatically turned on when the power is turned on. If short, you need to press the power button to turn the CPU board on.
Must be powered by a 12V power supply.
  • Fan & heatsink
Connector Model: JST GH Series Connector, 3Pin, BM03B-GHS-TBT
Pin# Assignment Description
1 GND 0V
2 12V 12V output ,controlled by GPIO4_C6/PWM1
3 /NC
  • I2S/GPIOs
Pin# Assignment Description Pin# Assignment Description
1 VCC3V3_SYS 3.3V Power Output, 500mA MAX 2 VCC5V0_SYS 5V Power Output, 2A MAX
3 VCC_1V8 1.8V Power Output,100mA MAX 4 VCC5V0_SYS 5V Power Output, 2A MAX
5 GND System Ground(0V) 6 GND System Ground(0V)
7 GPIO1_B1 3V GPIO. Linux GPIO 41 8 GND System Ground(0V)
9 GPIO1_B2 3V GPIO. Linux GPIO 42 10 GPIO4_C5/SPDIF_TX 3V GPIO. Linux GPIO 149, or SPDIF Output
11 I2C2_SDA I2C2 data, 1.8V level, open drian with 2.2K pulled internal 12 I2C2_SCL I2C2 clock, 1.8V level, open drian with 2.2K pulled internal
13 I2S0_LRCK_RX I2S0 word select for input data, 1.8V level 14 GND System Ground(0V)
15 I2S0_LRCK_TX I2S0 word select for output data, 1.8V level 16 I2S_CLK I2S Mclk for I2S0 and I2S1
17 I2S0_SCLK I2S0 continuous serial clock, 1.8V level 18 GND System Ground(0V)
19 I2S0_SDI0 I2S0 serial data, 1.8V level 20 I2S0_SDO0 I2S0 serial data, 1.8V level
21 I2S0_SDI1SDO3 I2S0 serial data, 1.8V level 22 I2S0_SDI2SDO2 I2S0 serial data, 1.8V level
23 GND System Ground(0V) 24 I2S0_SDI3SDO1 I2S0 serial data, 1.8V level
  • LED & Button
Key# GPIO Linux GPIO Active Note
K1 GPIO1_A1 33 Low GPIO is suspended by default, RK3399 internal pull-up must be enabled
K2 GPIO1_A3 45 Low
K3 GPIO1_A4 36 Low
Two-color LED (LED2)
Color GPIO Linux GPIO Active
Emerald GPIO1_C7 55 Hight
Orange GPIO1_D0 56 Hight
  • Button Jumper(CON9）
Pin# Assignment Pin# Assignment Description
1 PWR_KEY 2 GND for power button
3 RECOVERY 4 GND for RECOVERY button
5 RESET_IN_H 6 VCC3V3_SYS for reset button
7 KEY1 8 GND for K1

5 Link to Rockchip Resources

6 Schematic, PCB CAD File

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