96Boards Low Speed (LS) connector is a standard 40-pin 2.0mm pitch header for the Linaro 96Boards specification, providing UART SPI I2C GPIO analog and power signals on consumer and enterprise edition boards.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | GND | Ground | GND |
| 2 | GND | Ground | GND |
| 3 | UART0_CTS | UART0 CTS flow control | BUS |
| 4 | PWR_BTN | Power button | I/O |
| 5 | UART0_TX | UART0 transmit | BUS |
| 6 | RST_BTN | Reset button | I/O |
| 7 | UART0_RX | UART0 receive | BUS |
| 8 | SPI0_SCLK | SPI0 clock | BUS |
| 9 | UART0_RTS | UART0 RTS | BUS |
| 10 | SPI0_MISO | SPI0 MISO | BUS |
| 11 | UART1_TX | UART1 transmit | BUS |
| 12 | SPI0_MOSI | SPI0 MOSI | BUS |
| 13 | UART1_RX | UART1 receive | BUS |
| 14 | SPI0_CS | SPI0 chip select | BUS |
| 15 | I2C0_SCL | I2C0 clock | BUS |
| 16 | PCM_FS | PCM frame sync audio | BUS |
| 17 | I2C0_SDA | I2C0 data | BUS |
| 18 | PCM_CLK | PCM clock audio | BUS |
| 19 | I2C1_SCL | I2C1 clock | BUS |
| 20 | PCM_DO | PCM data out | BUS |
| 21 | I2C1_SDA | I2C1 data | BUS |
| 22 | PCM_DI | PCM data in | BUS |
| 23 | GPIO_A | GPIO A | I/O |
| 24 | GPIO_B | GPIO B | I/O |
| 25 | GPIO_C | GPIO C | I/O |
| 26 | GPIO_D | GPIO D | I/O |
| 27 | GPIO_E | GPIO E | I/O |
| 28 | GPIO_F | GPIO F | I/O |
| 29 | GPIO_G | GPIO G | I/O |
| 30 | GPIO_H | GPIO H | I/O |
| 31 | GPIO_I | GPIO I | I/O |
| 32 | GPIO_J | GPIO J | I/O |
| 33 | GPIO_K | GPIO K | I/O |
| 34 | GPIO_L | GPIO L | I/O |
| 35 | 1V8 | 1.8V power | PWR |
| 36 | SYS_DCIN | Main DC input | PWR |
| 37 | 5V | 5V power | PWR |
| 38 | SYS_DCIN | Main DC input | PWR |
| 39 | 5V | 5V power | PWR |
| 40 | GND | Ground | GND |