GPIO Interfaces – Low Speed Expansion Connectors – Low Speed Expansion Connector 1
The Low-Speed Expansion connector 1 is compatible with 96Boards specification. To use the LS 1, toggle switch 2 of DIP_SW_1 on the Mainboard.
LS1 provides the following interfaces:
- 2x UART
- 2x I2C (one of two is Low Power Island (LPI) I2C for sensor)
- 1x SPI
- 12x GPIOs
- DC power
- Ground
The GPIOs labelled QUP have additional low speed interface capabilities (UART, SPI, I2C). For more details on how to use the QUP interfaces, please request access to the Qualcomm® QRB2210 and Qualcomm® QRB4210 documentation on www.qualcomm.com. For the pin map and GPIO details, see the QRB2210 and QRB4210 Pin Assignment and GPIO Configuration Spreadsheets.
Several GPIOs can be used to wake up the application processor.
Low speed interfaces can be used to control a variety of peripherals, motors, sensors, etc. Audio interface is also available.
Wake-up function | Additional info | SOM pins | GPIO | Signal | Pin number | Signal | GPIO | SOM pin | Additional info | Wake-up function | |
GND | 1 | 2 | GND | ||||||||
Y | QUP0 | K16 | 0 | UART0_CTS | 3 | 4 | KYPD_PWR_N | W1 | POWER_ON | ||
N | QUP0 | L16 | 2 | UART0_TXD | 5 | 6 | KYPD_VOL_DOWN_N | W2 | VOL- | ||
Y | QUP0 | K15 | 3 | UART0_RXD | 7 | 8 | SM_GPIO_16_SCLK_1P8 | 16 | N16 | QUP5 | N |
N | QUP0 | L15 | 1 | UART0_RTS | 9 | 10 | SM_GPIO_14_MISO_1P8 | 14 | M15 | QUP5 | Y |
N | QUP4 | P22 | 12 | UART1_TXD | 11 | 12 | SM_GPIO_17_CS_1P8 | 17 | N15 | QUP5 | Y |
Y | QUP4 | N22 | 13 | UART1_RXD | 13 | 14 | SM_GPIO_15_MOSI_1P8 | 15 | M16 | QUP5 | N |
N | QUP2 | R17 | 7 | SM_GPIO_7_SCL_1P8(default DVT)/SM_GPIO_112_1P8 (optional 96board) | 15 | 16 | NC (default)/SM_GPIO_103_I2S_WS_LS1 (optional 96board) | ||||
Y | QUP2 | R16 | 6 | SM_GPIO_6_SDA_1P8 (default DVT)/SM_GPIO_111_1P8 (optional 96board) | 17 | 18 | NC (default DVT)/SM_GPIO_102_I2S_CLK_LS1 (optional 96board) | ||||
N | QUP2 | R17 | 7 | SM_GPIO_7_SCL_1P8 | 19 | 20 | SM_GPIO_111_1P8 (default DVT)/SM_GPIO_104_I2S_DATA0_LS1 (optional 96board) | 111 | H2 | LPI_QUP 0 SE5 | N |
Y | QUP2 | R16 | 6 | SM_GPIO_6_SDA_1P8 | 21 | 22 | NC (default DVT)/SM_GPIO_104_I2S_DATA1_LS1 (optional 96board) | ||||
Y | QUP1 | N21 | 4 | SM_GPIO_4_SDA_1P8 | 23 | 24 | SM_GPIO_40_1P8 | 40 | B3 | N | |
N | QUP1 | P21 | 5 | SM_GPIO_5_SCL_1P8 | 25 | 26 | PM+GPIO_08_BL_PWM_OUT | ||||
N | QUP1 | P16 | 71 | SM_GPIO_71_1P8 | 27 | 28 | SM_GPIO_44_1P8 | 44 | D2 | CAM0B_RST | N |
Y | C1 | 36 | SM_GPIO_36_1P8 | 29 | 30 | PM_GPIO_97_4P2 | PM4250_GPIO_08 | T20 | LCD_BL_PWM | ||
Y | CAM0A_RST | B12 | 18 | SM_GPIO_18_1P8 [96BRD_GPIO-I] | 31 | 32 | NC (default DVT)/SM_GPIO_77_1P8_LS1(optional 96board) | ||||
Y | CAM1_RST_N | G6 | 24 | SM_GPIO_24_1P8 | 33 | 34 | NC (default DVT)/SM_GPIO_74_1P8_LS1 (optional 96board) | 97 | H8 | QUP4 | Y |
From DCDC Onboard | 1.8V | 35 | 36 | DC12V | DC 12 V from Board | ||||||
From DCDC Onboard | 5V | 37 | 38 | DC12V | DC 12 V from Board | ||||||
GND | 39 | 40 | GND |
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