Pin | Name | Description |
1、3、4、5、6、7、8、10、11、23、32、39 | GND | Ground connections |
2 | WiFi_5G | WiFi5G radio frequency |
9 | WiFi_2G | WiFi2.4G radio frequency |
12 | BT_RF | Bluetooth RF |
13 | GPIOB0 | GPIO |
14 | GPIOB1 | GPIO |
15 | GPIOB2 | GPIO |
16 | GPIOB5 | GPIO |
17 | SD_CMD | SD interface |
18 | SD_CLK | SD interface |
19 | SD_D3 | SD interface |
20 | SD_D2 | SD interface |
21 | SD_D0 | SD interface |
22 | SD_D1 | SD interface |
24 | GPIOB5 | GPIO |
25 | GPIO13 | GPIO |
26 | UART0_RX | Serial port (used for main chip debugging) |
27 | PCM_SYNC | PCM interface |
28 | PCM_DIN | PCM interface |
29 | PCM_DOUT | PCM interface |
30 | PCM_CLK | PCM interface |
31 | GPIOB4 | GPIO |
33 | UART0_TX | Serial port (used for main chip debugging) |
34 | VCC_IO | Interface power |
36 | VCC_3V3 | Power input |
38 | GPIOB6 | GPIO |
40 | UART1_TX | Serial port (Bluetooth serial port supports VOHCI) |
41 | UART1_RX | Serial port (Bluetooth serial port supports VOHCI) |
42 | UART1_RTS | Serial port (Bluetooth serial port supports VOHCI) |
