====== VIM2 Interfaces ======



===== Top side =====

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|    ^ Component                          ^ Purpose                                                               ^
| 1  | USB-A                              | USB 2.0 speed, 500mA max output                                       |
| 2  | RJ-45                              | Gigabit Ethernet with Wake-On-LAN (WOL)                               |
| 3  | HDMI                               | HDMI 2.0a output with CEC, 4K@60Hz                                    |
| 4  | USB-C                              | USB 2.0 OTG and 5V power input, can be used for upgrading the OS      |
| 5  | USB-A                              | USB 2.0 speed, 900mA max output                                       |
| 6  | Current Limit Switch               | Prevents damage to VIM2 during uneven loading conditions              |
| 7  | Fan Header                         | 4-wire fan header utilising pulse width modulation                    |
| 8  | Reset Button                       | Force reboot your VIM2                                                |
| 9  | Function Button                    | Press this 3 times in 2 seconds to enter MaskROM mode                 |
| A  | Power Button                       | This button turns on your VIM2                                        |
| B  | RTC Battery Header                 | Header for attaching a battery for the real time clock                |
| C  | M2x4 Mounting Point                | For mounting to cases and heatsinks                                   |
| D  | 40-Pin GPIO                        | Learn how to access the GPIO from here, or use it to add a Toneboard  |
| E  | Infrared Module                    | 2-channel infrared receiver for use with Khadas IR remote             |
| F  | LEDs                               | Status indicator LEDs                                                 |
| G  | FPC Connector                      | 10-pins, 0.5mm pitch, with I2C, IOs                                   |
| H  | I-Pex Wi-Fi / Bluetooth Connector  | Wi-Fi / BT Antenna connector                                          |


===== Back side =====

{{products:sbc:vim2:hardware:vim2-interfaces-back-side.webp?600}}


|    ^ Component           ^ Purpose                                                               ^
| 1  | Pogo Pads           | External 5V power input, can be provided by vTV Board(DVB Tuner)      |
| 2  | Micro-SD Card Slot  | Boot alternative OSes via a micro-SD card, or just for extra storage  |
| 3  | MCU                 | STM8S003 micro-controller with programmable EEPROM                    |
| 4  | MCU Pogo Pads       | SWIM, UART, ADC, NRST                                                 |
| 5  | M-Register          | Shortcut to mask the eMMC                                             |
| 6  | SPI Flash           | Flash memory module that interfaces over SPI                          |
| 7  | 20-Pin Pogo Pads    | USB, I2C, DVB-Bus, IOs, for docking with the vTV Board(DVB Tuner)     |
| 8  | XPWR Pads           | Connect an external power switch using these pads                     |

===== Hardware buttons =====

{{products:sbc:vim2:hardware:vim2-buttons.webp?400}}


^  Reset  ^  Function  ^  Power  ^  Purpose                             ^
|  x      |            |         | Force Reboot VIM2                    |
|         |  x         |         | Enter Upgrade Mode (TST) (V14 only)  |
|         |            |  x      | Power On/Wake Up VIM2                |
|  x      |            |  x      | Enter Upgrade Mode (KEYS)            |


Special button shortcuts

  * Press ''FUNCTION'' 3 times in 2 seconds to enter MaskROM mode. (V14 only)

===== GPIO header pinout =====

^SIGNAL ^PIN ^PIN ^SIGNAL ^
|5V|1|21|GND|
|5V|2|22|I2C_SCK_A|
|HUB_DM1|3|23|I2C_SDA_A|
|HUB_DP1|4|24|GND|
|GND|5|25|I2C_SCK_B|
|GPIODV_21|6|26|I2C_SDA_B|
|GPIODV_22|7|27|3.3V|
|GPIODV_23|8|28|GND|
|GND|9|29|I2S_SCLK|
|ADC_CH0|10|30|I2S_MCLK|
|1.8V|11|31|I2S_SDO|
|ADC_CH2|12|32|I2S_LRCK|
|SPDIF|13|33|I2S_SDI|
|GND|14|34|GND|
|UART_RX_AO_B|15|35|PWM_D|
|UART_TX_AO_B|16|36|RTC_CLK|
|GND|17|37|GPIOH_5|
|Linux_RX|18|38|EXP_INT|
|Linux_TX|19|39|GPIODV_13|
|3.3V|20|40|GND|