No6: 40-Pin Header Pinout (J1)
| Signal | Pin | Pin | Signal |
|---|---|---|---|
| 5V_1 | 1 | 21 | GND5 |
| 5V_2 | 2 | 22 | OLED_SCL |
| VIM_DN | 3 | 23 | OLED_SDA |
| VIM_DP | 4 | 24 | GND6 |
| GND | 5 | 25 | - |
| - | 6 | 26 | - |
| - | 7 | 27 | VCC_3V3 |
| - | 8 | 28 | GND7 |
| GND | 9 | 29 | I2S_SCLK |
| ADC0 | 10 | 30 | I2S_MCLK |
| - | 11 | 31 | I2S_SDO |
| - | 12 | 32 | I2S_LRCK |
| VIM_SPDIF | 13 | 33 | I2S_SDI |
| GND3 | 14 | 34 | GND8 |
| UART_RX_AO_B/SPDIF_MODE gpio506 | 15 | 35 | OLED_PWREN |
| UART_TX_AO_B/SPDIF_IN_MODE gpio505 | 16 | 36 | - |
| GND4 | 17 | 37 | OLED_RST |
| Linux_RX | 18 | 38 | - |
| Linux_TX | 19 | 39 | MUTE |
| VCC_3V3 | 20 | 40 | GND9 |
i will try to check it soon