Sysolution Android LCD Controller L20
Product Introduction:
Sysolution L20 integrates multimedia decoding, LCD driver, Ethernet, HDMI, WIFI, 4G, and Bluetooth. It can operate -25℃ - +60℃. L20 supports most of the current popular videos and picture format decoding, HDMI video output and output, dual 8 or 10 -bit LVDS. The TF card and the SIM card seat with lock are stable and very suitable for high-definition network palyback box, video advertisting machine and frame advertisting machine.
The L20 panel integrates multimedia decoding, LCD driver, Ethernet, HDMI, WIFI, 4G, and
Bluetooth in one, supports most of the current popular videos and picture format decoding,
supports HDMI video output / input, dual 8 / 10-bit LVDS The interface and EDP interface can
drive a variety of TFT LCD displays, greatly simplifying the whole machine system design. The
TF card and the SIM card seat with lock are more stable and are very suitable for
high-definition network playback box, video advertising machine and frame advertising
machine.
Functions:
- High integration: Integrate USB / LVDS / EDP / HDMI / Ethernet / WIFI / Bluetooth in one, simplify the design of the whole machine, and can insert TF card;
- Save labor costs: Built-in PCI-E 4G module, support a variety of PCI-E 4G modules, are more suitable for remote maintenance of all-in-one advertising machines, saving labor costs;
- Rich expansion interfaces: 6 USB interfaces (4 pins and 2 standard USB ports), 3 available extended serial ports, GPIO/ADC interface, can meet the requirements of various peripherals on the market;
- High-definition: Maximum support 3840×2160 decoding and various LVDS/EDP interface LCD display;
- Complete functions: Support horizontal and vertical screen playback, video split screen, scrolling subtitles, timer switch, USB data import and other functions;
- Convenient management: Humanized playlist background management software, which is convenient for advertising playback management and control. Play log, easy to understand the playback situation.
Specifications:
| Main Hardware Indicators |
| CPU | Rockchips RK3288 The strongest quad-core 1.8GHz Cortex-A17 Four nuclear GPU Mail-T764 |
| Memory | 2G(Default)(Highest 4G) |
| Built-in Memory | EMMC 16G(Default)/32G/64G (Optional) |
| Built-in ROM | 2KB EEPROM |
| Decoding Resolutions | Highest support 3840*2160 |
| Operating System | Android 7.1 |
| Play Mode | Support multiple playback modes such as loop, timing, insertion and so on |
| Network Support | 4G, Ethernet, support WiFi/ Bluetooth 4.0, wireless peripheral extension |
| Video Playback | Support MP4(.H.264,MPEG,DIVX,XVID)Format |
| USB2.0 Interface | 2 USB HOST,4 USB Sockets |
| Mipi Camera | 24pin FPC interface,Support 1300w Camera(Optional) |
| Serial Port | 3 default serial port COM Sockets(can change to RS232 or 485) |
| GPS | External GPS (Optional) |
| WIFI,BT | Built-in WIFI,BT4.0 (Optional) |
| 4G | 4GBuilt-in 4G module communication (Optional) |
| Ethernet | 1,10M/100M/1000M Adaptive Ethernet |
| TF Card | Support TF card |
| LVDS Output | 1 single/dual port, can directly drive 50/60Hz LCD screen |
| EDP Output | Can directly drive EDP interface LCD screen with multiple resolutions |
| HDMI Output | 1, support 1080P@120Hz,4kx2k@60Hz output |
| Audio and Video Output | Support left and right channel output, built-in dual 8R/5W power amplifier |
| RTC Real Time Clock | Support |
| Timing Switcher | Support |
| System Upgrade | Support SD card/Computer update |
Product Image:
Interface Definitions:
The following is the definition of the built-in socket interface
CON12 UART0-TTL Interface (2.00MM Vertical Socket)
| Serial number | Definition | Attribute | Description |
| 1 | VCC-3.3V | Power Output | VCC-3.3V | |
| 2 | UART0_TX | Output | UART0_TX |
| 3 | UART0_RX | Input | UART0_RX |
| 4 | GND | Ground | Ground |
- Generally used as DEBUG;
- DEBUG is used by default.
CON33 UART-TTL / RS232 Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | VCC-3.3V | Power Output | VCC-3.3V | |
| 2 | UART_TX | Output | Data output, connect to RX pin of external device |
| 3 | UART_RX | Input | Data output, connect to TX pin of external device |
| 4 | GND | Ground | Ground |
- This serial port can be adjusted by hardware, and configured as TTL/RS232 for data connection with external device;
- TTL output is used by default, and the port number is UART1.
- CON34 UART-TTL / RS232 Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | VCC-3.3V | Power Output | VCC-3.3V | |
| 2 | UART_TX | Output | Data output, connect to RX pin of external device |
| 3 | UART_RX | Input | Data output, connect to TX pin of external device |
| 4 | GND | Ground | Ground |
- This serial port can be adjusted by hardware, and configured as TTL/RS232 for data connection with external device;
- TTL output is used by default, and the port number is UART4.
- CON46 UART-TTL / RS485 Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | VCC-3.3V | Power Output | VCC-3.3V | |
| 2 | UART_TX / A | Output | Data output, connect to RX pin of external device |
| 3 | UART_RX / B | Input | Data output, connect to TX pin of external device |
| 4 | GND | Ground | Ground |
- This serial port can be adjusted by hardware, and configured as TTL/RS485 for data connection with external device;
- TTL output is used by default, and the port number is UART0.
- This socket shares the serial port PIN with the Bluetooth module. If you need to use the Bluetooth function, this socket is not used. This socket is used by default, and without Bluetooth.
- CON41 SPK-OUT Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | LOUTP | L output is positive | Speaker amplifier output is positive | |
| 2 | LOUTN | L output is negative | Speaker amplifier output is negative |
| 3 | ROUTN | R output is negative | Speaker amplifier output is negative |
| 4 | ROUTP | R output is positive | Speaker amplifier output is positive |
- This is the dual speakers connection. When using a single speaker, it is a group of PIN and PIN 2, and a group of PIN 3 and PIN 4, which can not be mistaken;
- For the use of the speaker, it is necessary to connect the speaker first and then turn it on. 8R speaker is used by default;
- The power amplifier chip can support up to 2*8R/10W. Note the matching range of the speaker used, it is recommended that the rated power of the speaker can reach more than 3W.
- CON43 USB-HOST Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | GND | Ground | Ground | |
| 2 | DP | Data is positive | The data single is positive, connect the USB_DP pin of the external device |
| 3 | DM | Data is negative | The data single is negative, connect the USB_DM pin of the external device |
| 4 | VCC-5V | Power Output | Power cord |
- Use either this socket or PCI_E socket. If you need to use 3G/4G equipment, this socket can not be connected to other equipment;
- It is recommended to use other sockets first, if necessary, use this socket last.
CON37 USB-HOST Interface (2.00MM Horizontal socket)
| Serial number | Definition | Attribute | Description |
| 1 | GND | Ground | Ground | |
| 2 | DP | Data is positive | The data single is positive, connect the USB_DP pin of the external device |
| 3 | DM | Data is negative | The data single is negative, connect the USB_DM pin of the external device |
| 4 | VCC-5V | Power Output | Power cord |
- CON38 USB-HOST Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | GND | Ground | Ground | |
| 2 | DP | Data is positive | The data single is positive, connect the USB_DP pin of the external device |
| 3 | DM | Data is negative | The data single is negative, connect the USB_DM pin of the external device |
| 4 | VCC-5V | Power Output | Power cord |
- CON39 USB-HOST Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | GND | Ground | Ground | |
| 2 | DP | Data is positive | The data single is positive, connect the USB_DP pin of the external device |
| 3 | DM | Data is negative | The data single is negative, connect the USB_DM pin of the external device |
| 4 | VCC-5V | Power Output | Power cord |
- This socket extends directly from the main control, it is recommended to exchange a large number of devices to connect this socket first.
J56 USB OTG Function Optional Socket (2.00MM Horizontal Pin)
| Serial number | Definition | Attribute | Description |
| 1 | GND | Ground | Ground | |
| 2 | OTG-SEL | Optional Pin | USB function selection output |
- After this jumper cap is connected, the external USB port (J12) is the USB-HOST function, and if it is not connected, it is the USB-DRV function;
- If you use the J12 interface for DEBUG debugging, please remove this jumper cap. For example, when connecting a mouse and other devices, this jumper cap must be connected. The default is connected.
- CON35 Power-DC12V-IN Interface (2.54MM Horizontal Socket Red)
| Serial number | Definition | Attribute | Description |
| 1 | DC12V-IN | Power Input | 12V Power input | |
| 2 | DC12V-IN | Power Input | 12VPower input |
| 3 | GND | Power Ground | Power Ground |
| 4 | GND | Power Ground | Power Ground |
| 5 | 5VSTB | Signal Input | STB Power input |
| 6 | STB | Signal Output | STB Signal output |
- When using the built-in power input, connect to this socket;
- The STB function needs external power strip support before it can be used;
- The power supply voltage is 12V input, the use range is acceptable between 9V-14V, do not use a power adapter that exceeds this range.
- CON45 GPIO Signal Output (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | GND | Ground | Ground | |
| 2 | GPIO1 | Input/Output | GPIO1 Interface input / Output interface |
| 3 | GPIO2 | Input/Output | GPIO2 Interface input / Output interface |
| 4 | GPIO3 | Input/Output | GPIO3 Interface input / Output interface |
| 5 | GPIO4 | Input/Output | GPIO4 Interface input / Output interface |
| 6 | VCC-3.3V | Power Output | VCC-3.3V |
- The default configuration is GPIO port to use.
- CON42 KEY External Socket Interface(2.00MM Horizontal Socket)
| NO. | Define | Attribute | Describe |
| 1 | POWEN | Input | System startup button | |
| 2 | RESET | Input | Reset signal interface |
| 3 | KEY | Input | KEY extension interface(Up to 7 keys can be extended) |
| 4 | GND | Ground | Ground |
- The configuration of the button can be adjusted, depending on the actual communication needs.
- CON52 CTP Socket Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | GND | Ground | Ground | |
| 2 | RST | Input/Output | CTP Reset |
| 3 | INT | Input/Output | CTP Interrupt |
| 4 | I2C-SCL | Input/Output | I2C Clock signal |
| 5 | I2C-SDA | Input/Output | I2C Data signal | |
| 6 | VCC-3.3V | Power output | VCC-3.3V |
CON22 Backlight Inverter Control Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | BL-12V_IN | Power Input | 12V Backlight power output ,12V power supply is directly connected to the external adapter, and the current depends on the current of the adapter | |
| 2 | BL-12V_IN | Power Input |
| 3 | ON / OFF | Control Output | Backlight switch signal, high level effective, software configuration |
| 4 | ADJ | Control Output | LVDS Screen brightness control |
| 5 | GND | Power Ground | Power Ground |
| 6 | GND | Power Ground | Power Ground |
- Pay attention to the order of the pins, not reverse.
2. For models that do not need to use the ADJ function, the ADJ can be left unconnected or connected to ON/OFF, so as to avoid the problem of dark screen. Whether the ADJ is connected high or low, please check the screen specifications.
- J57 EDP_LOGIC Power Input Optional Socket (2.00MM Horizontal Pin)
| Serial number | Definition | Attribute | Description |
| 1 | BL-3.3V_IN | Power Input | 3.3V power input, jumper cap is connected |
|
| 2 | BL-VCC-OUT | Backlight Output | EDP_LOGIC power output |
| 3 | BL-5.0V_IN | Power Input | 5.0V power input, jumper cap is connected |
| 4 | BL-VCC-OUT | Backlight Output | EDP _LOGIC power output |
| 5 | BL-12V_IN | Power Input | 12V power input, jumper cap is connected |
| 6 | BL-VCC-OUT | Backlight Output | EDP _LOGIC Power output |
- When selecting this power supply, you must pay attention to the logic voltage required by the display, and then jump the jumper cap to the corresponding voltage selection PIN, otherwise it will easily burn the display circuit. (For the display voltage, please check the corresponding screen specifications)
- J58 EDP Signal Output (Dual 2.0MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | EDP-VCC_IN | Power Input | Liquid crystal power output, +3.3V /+5V/ +12V optional, optional via J55 | |
| 2 |
| 3 | GND | Power Ground | Power Ground |
| 4 |
| 5 | EDP-TX0- | Output | Display Port Lane 0 negative output |
| 6 | EDP-TX0+ | Output | Display Port Lane 0 positive output |
| 7 | EDP-TX1- | Output | Display Port Lane 1 negative output |
| 8 | EDP-TX1+ | Output | Display Port Lane 1 positive output |
| 9 | EDP-TX2- | Output | Display Port Lane 2 negative output |
| 10 | EDP-TX2+ | Output | Display Port Lane 2 positive output |
| 11 | EDP-TX3- | Output | Display Port Lane 3 negative output |
| 12 | EDP-TX3+ | Output | Display Port Lane 3 positive output |
| 13 | GND | Ground | Ground |
| 14 | GND | Ground | Ground |
| 15 | EDP-AUX- | Output | Port AUX- channel negative signal |
| 16 | EDP-AUX+ | Output | Port AUX+ channel positive Signal |
| 17 | GND | Ground | Ground |
| 18 | GND | Ground | Ground |
| 19 | +3.3V | Output | Output voltage |
| 20 | EDP-HPD | Output | Screen hot plug detection signal |
J55 LVDS_LOGIC Power Output Optional Socket(2.00MM Horizontal Pin)
| Serial Number | Definition | Attribute | Description |
| 1 | BL-3.3V_IN | Power Input | 3.3V power input, jumper cap is connected | |
| 2 | BL-VCC-OUT | Backlight Output | LVDS_LOGIC power output |
| 3 | BL-5.0V_IN | Power Input | 5.0V power input, jumper cap is connected |
| 4 | BL-VCC-OUT | Backlight Output | LVDS_LOGIC power output |
| 5 | BL-12V_IN | Power Input | 12V power input, jumper cap is connected |
| 6 | BL-VCC-OUT | Backlight Output | LVDS_LOGIC power output |
- When selecting this power supply, you must pay attention to the logic voltage required by the display, and then jump the jumper cap to the corresponding voltage selection PIN, otherwise it will easily burn the display circuit. (For the display voltage, please check the corresponding screen specifications)
- J53 LVDS Signal Output(Dual 2.0MM Horizontal Socket) Support dual channel 10-bit LVDS
| Serial Number | Definition | Attribute | Description |
| 1 | LCDVCC-IN | Power Input | Liquid crystal power output, +3.3V /+5V/ +12V optional, optional via J55 | |
| 2 |
| 3 |
| 4 | GND | Power Ground | Power Ground |
| 5 |
| 6 |
| 7 | RXO0- | Output | Pixel0 Negative Data (Odd) |
| 8 | RXO0+ | Output | Pixel0 Positive Data (Odd) |
| 9 | RXO1- | Output | Pixel1 Negative Data (Odd) |
| 10 | RXO1+ | Output | Pixel1 Positive Data (Odd) |
| 11 | RXO2- | Output | Pixel2 Negative Data (Odd) | |
| 12 | RXO2+ | Output | Pixel2 Positive Data (Odd) |
| 13 | GND | Ground | Ground |
| 14 | GND | Ground | Ground |
| 15 | RXOC- | Output | Negative Sampling Clock (Odd) |
| 16 | RXOC+ | Output | Positive Sampling Clock (Odd) |
| 17 | RXO3- | Output | Pixel3 Negative Data (Odd) |
| 18 | RXO3+ | Output | Pixel3 Positive Data (Odd) |
| 19 | RXE0- | Output | Pixel0 Negative Data (Even) |
| 20 | RXE0+ | Output | Pixel0 Positive Data (Even) |
| 21 | RXE1- | Output | Pixel1 Negative Data (Even) |
| 22 | RXE1+ | Output | Pixel1 Positive Data (Even) |
| 23 | RXE2- | Output | Pixel2 Negative Data (Even) |
| 24 | RXE2+ | Output | Pixel2 Positive Data (Even) |
| 25 | GND | Ground | Ground |
| 26 | GND | Ground | Ground |
| 27 | RXEC- | Output | Negative Sampling Clock (Even) |
| 28 | RXEC+ | Output | Positive Sampling Clock (Even) |
| 29 | RXE3- | Output | Pixel3 Negative Data (Even) |
| 30 | RXE3+ | Output | Pixel3 Positive Data (Even) |
| 31 | RXO4- | Output | Pixel4 Negative Data (Odd) | |
| 32 | RXO4+ | Output | Pixel4 Positive Data (Odd) |
| 33 | RXE4- | Output | Pixel4 Negative Data (Even) |
| 34 | RXE4+ | Output | Pixel4 Positive Data (Even) |
- J17 HDMI_IN Interface(FPC Socket 0.5MM Horizontal Socket)Screen
| Serial Number | Definition | Attribute | Description |
| 1 | I2C-SCL | Output | SCL Signal | |
| 2 | I2C-SDA | Output | SDA Signal |
| 3 | I2S-SDI | Output | I2S group signal |
| 4 | I2S-CLK | Output | I2S group signal |
| 5 | I2S-SCLK | Output | I2S group signal |
| 6 | I2S-LRCK | Output | I2S group signal |
| 7 | RST | Ground | Reset signal |
| 8 | HDMI-IR | Ground | To be determined |
| 9 | STBY | Output | Standby control |
| 10 | INT | Output | Interrupt signal |
| 11 | CLKP | Output | Mipi Clock channel is positive |
| 12 | CLKN | Output | Mipi Clock channel is negative |
| 13 | D3P | Output | Mipi Data channel 3 is positive |
| 14 | D3N | Output | Mipi Data channel 3 is negative |
| 15 | D2P | Output | Mipi Data channel 2 is positive | |
| 16 | D2N | Output | Mipi Data channel 2 is negative |
| 17 | D1P | Output | Mipi Data channel 1 is positive |
| 18 | D1N | Output | Mipi Data channel 1 is negative |
| 19 | D0P | Ground | Mipi Data channel 0 is positive |
| 20 | D0N | Ground | Mipi Data channel 0 is negative |
| 21 | GND | Output | Ground |
| 22 | GND | Output | Ground |
| 23 | PWREN | Output | Power enable |
| 24 | VCC | Output | 5V output |
CON32 Microphone Input Interface (2.00MM Horizontal Socket)
| Serial Number | Definition | Attribute | Description |
| 1 | MICP | Signal input is positive | Microphone is positive | |
| 2 | MICN | Signal input is negative | Microphone is negative |
- When connecting the microphone, be careful not to reverse its polarity.
- J16 Camera Interface (FPC Socket 0.5MM Horizontal Socket)
| Serial Number | Definition | Attribute | Description |
| 1 | NC | / | / | |
| 2 | VDD | Power | 2.8V Output |
| 3 | DVDD | Power | 1.2V Output |
| 4 | DOVDD | Power | 1.8V Output |
| 5 | NC | / | / |
| 6 | GND | Ground | Ground | |
| 7 | VDD | Power | 2.8V Output |
| 8 | GND | Ground | Ground |
| 9 | I2C3_SDA | Input/Output | SDA Signal |
| 10 | I2C3_SCL | Output | SCL Signal |
| 11 | RST | Output | Reset signal |
| 12 | PWDN | Output | Power control |
| 13 | GND | Ground | Ground |
| 14 | MCLK | Output | Master clock |
| 15 | GND | Ground | Ground |
| 16 | D3P | Input/Output | Mipi Data channel 3 is positive |
| 17 | D3N | Input/Output | Mipi Data channel 3 is negative |
| 18 | GND | Ground | Ground |
| 19 | D2P | Input/Output | Mipi Data channel 2 is positive |
| 20 | D2N | Input/Output | Mipi Data channel 2 is negative |
| 21 | GND | Ground | Ground |
| 22 | D1P | Input/Output | Mipi Data channel 1 is positive |
| 23 | D1N | Input/Output | Mipi Data channel 1 is negative |
| 24 | GND | Ground | Ground |
| 25 | CLKP | Input/Output | Mipi Clock channel is positive |
| 26 | CLKN | Input/Output | Mipi Clock channel is negative |
| 27 | GND | Ground | Ground |
| 28 | D0P | Input/Output | Mipi Data channel 0 is positive | |
| 29 | D0N | Input/Output | Mipi Data channel 0 is negative |
| 30 | GND | Ground | Ground |
CON44 Two-color LED and Infrared IR Interface (2.00MM Horizontal Socket)
| Serial number | Definition | Attribute | Description |
| 1 | LED_ RED | Output | LED light positive pole, system running status indicator light | |
| 2 | GND | Power Ground | Power Ground |
| 3 | LED_ BLUE | Output | LED light positive pole, system shutdown status indicator light |
| 4 | IRVCC-3V3 | Power Input | Remote power output |
| 5 | GND | Power Ground | Power Ground |
| 6 | IR-IN | Signal Input | IR Signal input |
- The default configuration is to use a common cathode LED lamp. If a common anode lamp is used, the common pin of the LED lamp can be connected to the 3rd PIN as the power input when making an extension cable. Note that after this connection method , the status of the lamp will change, and need to update the software configuration;
- The remote control supports the function of hard switching machine. The remote start button needs software configuration or the remote control code value can be used after learning to match;
- Remote learning operation: In the shutdown state, short-circuit the MCU_INT socket, and press the key of the remote control that needs to be adapted to the switch machine on the receiver, then turn it on. After turning on, the machine has learned to switch on and off and you can use this key to switch.
| Built-in Socket Interface Parameters | Interface |
| J3 | Standard 12V round head 6.4mm aperture, 2.0mm internal needle, positive inside and negative outside | |
| J15 | Standard TF card interface definition | |
| J8 | Standard type A HDMI socket definition | |
| J6 | Standard 100M RJ45 socket definition (without light) | |
| J12 | Standard USB2.0 horizontal socket definition | |
| J20 | Standard USB2.0 horizontal socket definition | |
| J59 | Standard external earphone audio source socket definition | |
| SIM1 | Standard SIM card interface definition | |
Dimensions
External Interface Thickness Dimension Drawings
PCB:6 board
Size:135mm*90mm, Board thickness 1.6mm
Screw hole specification:∮3.0mm x 4
