GPIO Interfaces – Low Speed Expansion Connectors – Low Speed Expansion Connector 2
This is an additional connector that is not required by the 96Boards specification but provides developers with additional functionality. It provides the following:
- 2x DMIC support
- Additional I2S audio interface
- CAN interface
- Audio amp outputs
- PM8008 7x LDOs
- Spare GPIOs
- Battery ID/therm
- Other additional functions
Low speed interfaces can be used to control a variety of peripherals, including audio functions.
Wake-up function | Additional info | SOM pin | GPIO | Signal | Pin number | Signal | GPIO | SOM pin | Additional info | Wake-up function | |
Y | G17 | 79 | SM_GPIO_79_1P8 | 1 | 2 | NC | |||||
N | L21 | 98 | SM_GPIO_98_DMIC CLK1_1P8 | 3 | 4 | CAN_H | from onboard CAN | ||||
Y | L22 | 99 | SM_GPIO_99_DMIC DATA1_1P8 | 5 | 6 | CAN_L | from onboard CAN | ||||
N | G16 | 76 | SM_GPIO_76_1P8 | 7 | 8 | PM_VREG_L20A_1P8_UIM2 | V15 | 1.8V For UIM2 | |||
N | L20 | 100 | SM_GPIO_100_1P8 | 9 | 10 | GND | |||||
Y | K20 | 101 | SM_GPIO_101_1P8 | 11 | 12 | PM8008_VREG_L2P_1P2 | C22 | Camera Power | |||
N | G15 | 77 | SM_GPIO_77_1P8 (default DVT) / NC (optional) | 13 | 14 | PM8008_VREG_L7P_1P8 | D22 | ||||
SD_Detect | LS_SD_CARD_DET_N | 15 | 16 | PM8008_VREG_L5P_2P8 | E22 | ||||||
N | G14 | 78 | SM_GPIO_78_1P8 | 17 | 18 | PM8008_VREG_L4P_2P8 | F22 | ||||
N | J20 | 108 | SM_GPIO_108_I2S_MCLK_1P8* | 19 | 20 | PM8008_VREG_L1P_1P2 | C21 | ||||
Y | J21 | 105 | SM_GPIO_105_I2S_DATA_1P8 (default DVT)/ NC (optional) | 21 | 22 | PM8008_VREG_L6P_2P8 | D21 | ||||
Y | K22 | 102 | SM_GPIO_102_I2S_CLK_1P8 (default DVT)/ NC (optional) | 23 | 24 | PM8008_VREG_L3P_2P8 | E21 | ||||
Y | K21 | 103 | SM_GPIO_103_I2S_WS_1P8 (default DVT)/ NC (optional) | 25 | 26 | PM_FLASH_LED1 | V10 | PM_FLASH_LED | |||
from onboard WSA | SPK0_P | 27 | 28 | PM_FLASH_LED1 | V11 | ||||||
from onboard WSA | SKP0_M | 29 | 30 | PM_FLASH_LED2 | V8 | ||||||
from onboard WSA | SPK1_P | 31 | 32 | PM_FLASH_LED2 | V9 | ||||||
from onboard WSA | SPK1_M | 33 | 34 | PM_VREG_L22A_2P96 | V16 | 2.96 V For SD CARD | |||||
NC | 35 | 36 | BATT_THERM | AA6 | BATT_THERM | ||||||
PM_GPIO_06 | AC19 | PM_GPIO_06 | PM_GPIO_06_4P2 | 37 | 38 | BATT_ID | AA5 | BATT_ID | |||
VBAT | 39 | 40 | USB_VBUS | USB_VBUS | |||||||
GND | 41 | 42 | GND | ||||||||
N | F15 | 73 | SM_GPIO_73_1P8 | 43 | 44 | SM_GPIO_75_1P8 | 75 | F17 | Y | ||
N | F14 | 74 | SM_GPIO_74_1P8 | 45 | 46 | SM_GPIO_72_1P8 | 72 | F16 | Y | ||
* Dedicated I2S_MCLK and WSA8815 Mclk (Cannot be used for other functions) |
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