Hardware Resources
The X3399V4 baseboard provides rich peripherals, including Gigabit Ethernet, CSI, DSI, HDMI, EDP, Type-C, USB 3.0, USB 2.0, optical audio output, IR receiver, dual CSI, PCIe, SIM card, speaker, headphone, TF card, RTC, buzzer, and Wi-Fi/BT resources.
Hardware Interface List
| No. | Name | Description |
|---|---|---|
| 【1】 | CPU | RK3399, A53 4 x 1.5GHz + A72 2 x 2GHz |
| 【2】 | DDR | K4E8E304EE-EGCF, LPDDR3, 2GBytes or / TM8G32MD4LSA1, LPDDR4, 2GBytes |
| 【3】 | eMMC | KLMAG2GEND, 16GB (4GB / 8GB optional) |
| 【4】 | RTC | RTC battery holder, CR1202 |
| 【5】 | BEEP | Buzzer |
| 【6】 | UART4 | UART4, TTL-level interface |
| 【7】 | UART2 | UART2, default debug UART, TTL level |
| 【8】 | FAN | Cooling fan power connector |
| 【9】 | DC block | 12V DC power input |
| 【10】 | POWER | Power key |
| 【11】 | BOOT | MCU firmware download connector |
| 【12】 | Independent keys | Volume up; used as Recovery key during upgrade |
| 【13】 | Independent keys | Volume down |
| 【14】 | Independent keys | Back |
| 【15】 | Independent keys | Menu |
| 【16】 | MIPI CSI | MIPI Camera connector |
| 【17】 | MIPI CSI+DSI | MIPI Camera and DSI connector; supports dual MIPI panels |
| 【18】 | MIPI DSI | For MIPI display panel |
| 【19】 | HDMI | HDMI output connector |
| 【20】 | RESET | Reset key |
| 【21】 | Infrared receiver | HS0038 integrated IR receiver |
| 【22】 | TF card | TF-card socket |
| 【23】 | Type-C | Type-C connector, OTG compatible |
| 【24】 | USB HOST | HOST 2.0 connector |
| 【25】 | USB HOST | HOST 3.0 connector |
| 【26】 | SIM card slot | SIM slot for 3G / 4G |
| 【27】 | PCIE interface | PCIe connector for 3G / 4G module |
| 【28】 | EDP | EDP connector |
| 【29】 | GPIO interface | GPIO expansion header |
| 【30】 | LED light | Four programmable LEDs |
| 【31】 | Camera interface | Standard 24PIN parallel camera interface |
| 【32】 | Speaker interface | External dual-channel speaker |
| 【33】 | SPDIF | Optical audio output |
| 【34】 | Headphone holder | Headphone output |
| 【35】 | Gigabit network port | RT8211E interface |
| 【36】 | Wi-Fi/BT | AP6356S Wi-Fi / BT combo module |