GPIO Interfaces – Low Speed Expansion Connectors – Low Speed Expansion Connector 3
This is an additional connector that is not required by the 96Boards specification but provides developers with additional functionality. It provides the following:
- 1x I2C
- 1x I3C
- 3x analog MIC
- 1x headphone JACK for QRB2210
- Interrupt signals for sensors
- Additional GPIOs and power supplies.
The GPIOs labelled QUP have additional low speed interface capabilities (UART, SPI, I2C). Several GPIOs can be used to wake up the application processor.
Wake-up function | Additional info | SOM pin | GPIO | Signal | Pin Number | Signal | GPIO | SOM Pin | Additional info | Wake-up function | |
AMIC2_INP | LS3_AMIC2_INP | 1 | 2 | LS3_AMIC2_INP | AMIC2_INP | ||||||
32.768Khz | U20 | SLEEP_CLK | 3 | 4 | LS3_AMIC1_INP | AMIC1_INP | |||||
AMIC3_INM | LS3_AMIC3_INM | 5 | 6 | LS3_AMIC1_INM | AMIC1_INM | ||||||
QUP2 | P17 | 80 | SM_GPIO_80_1P8 | 7 | 8 | LS3_AMIC3_INP | AMIC3_INP | ||||
MIC_BIAS2 | LS3_MIC_BIAS2 | 9 | 10 | LS3_MIC_BIAS3 | MIC_BIAS3 | ||||||
MIC_BIAS1 | LS3_MIC_BIAS1 | 11 | 12 | DP_AUX_M | Reserved | ||||||
Reserved | DP_AUX_P | 13 | 14 | HDDET_L** | R1 | HSDET_L | |||||
HPH_REF | T1 | HPH_REF** | 15 | 16 | SM_GPIO_0_MISO_1P8 | 0 | K16 | QUP0 | Y | ||
HPH_L | V1 | HPH_L** | 17 | 18 | SM_GPIO_1_MOSI_1P8 | 1 | L15 | QUP0 | N | ||
HPH_R | U1 | HPH_R** | 19 | 20 | SM_GPIO_2_CLK_1P8 | 2 | L16 | QUP0 | N | ||
NC | 21 | 22 | SM_GPIO_3_CS_1P8 | 3 | K15 | QUP0 | Y | ||||
N | LPI_QUP_0_SE1 | J16 | LPI_GPIO_22 | SM_LPI_GPIO_22_I3C_SCL | 23 | 24 | SM_GPIO_81_1P8 | 81 | M17 | Y | |
N | LPI_QUP_0_SE1 | J17 | LPI_GPIO_21 | SM_LPI_GPIO_21_I3C_SDA | 25 | 26 | SM_GPIO_32_1P8 | 32 | G1 | Y | |
GND | 27 | 28 | SM_GPIO_33_1P8 | 33 | F1 | Y | |||||
NC | 29 | 30 | SM_GPIO_34_1P8 | 34 | E1 | Y | |||||
NC | 31 | 32 | SM_GPIO_35_1P8 | 35 | D1 | Y | |||||
VPH_PWR | 33 | 34 | SM_GPIO_109_SDA_1P8 | 109 | M20 | LPI_QUP_0_SE0 | Y | ||||
1.8V | AC20 | VREG_L19A_1P8 | 35 | 36 | SM_GPIO_110_SCL_1P8 | 110 | M21 | LPI_QUP_0_SE0 | N | ||
5V | 37 | 38 | 1.8V | ||||||||
VBAT | 39 | 40 | GND | ||||||||
GND | 41 | 42 | GND | ||||||||
Reserved | SPK_OUT_M | 43 | 44 | SPK_OUT_P | Reserved | ||||||
NC | 45 | 46 | NC | ||||||||
** Dedicated 2210_PMIC_AUDIO only for Qualcomm Robotics RB1 Development kit |
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