I-Pi SMARC with NXP i.MX 8M Plus SoC Two 40-Pin Expansion Headers locations Header 1 : 40-Pin RPI Compatible Expansion Function MRAA Number MRAA number Function 3.3V 1 2 5V I2C 1 SDA 3 4 5V I2C 1SCL 5 6 GND GPIO 4 7 8 UART TXD GND 9 10 UART RXD GPIO 17 11 12 GPIO 18 GPIO 27 13 14 GND GPIO 22 15 16 GPIO 23 3.3V 17 18 GPIO 24 GPIO 10/MOSI 19 20 Ground GPIO 9/MISO 21 22 GPIO 25 GPIO 11/SCLK 23 24 GPIO 8 GND 25 26 GPIO 7 DNC 27 28 DNC GPIO 5 29 30 GND GPIO 6 31 32 GPIO 12 GPIO 13 33 34 GND GPIO 19 35 36 GPIO 16 GPIO 26 37 38 GPIO 20 GND 39 40 GPIO 21 Header 2 : 40-Pin Expansion Function Pin Number Pin number Function SER 1 RX 1 2 SER3 RX SER 1 TX 3 4 SER3 TX GND 5 6 GND SER 2 RX 7 8 SER2RTS# SER 2 TX 9 10 SER2 CTS# GND 11 12 GND CANO_H 13 14 CAN1_H CANO_L 15 16 CAN1_L GND 17 18 GND NC 19 20 NC SPI1_HOLD_N 21 22 SPI1_WP_N GND SPI1_CS0_N 23 24 SPI1_CS1_N GND 25 26 VCC_SPI1 SPI1_CLK 27 28 GND SPI1_IO0_MOSI 29 30 SPI1_IO1_MISO SPI1_IO3 31 32 SPI1_IO2 ESPI_ALERT_0# 33 34 ESPI_ALERT_1# ESPI_RESET_N 35 36 GND NC 37 38 NC NC 39 40 NC Connector Pinout and Signal Descriptions LVDS Pin Header 0 Function Pin Number Pin Number Function PNLPWR 2 1 LVDS0_EDP0_DSI0_D0_CN_P .+VDD_PANEL0_EDID 4 3 LVDS0_EDP0_DSI0_D0_CN_N .+VDD_PANEL0_EDID 6 5 GND .+VDD_PANEL0 8 7 LVDS0_EDP0_DSI0_D1_CN_P .+VDD_PANEL0 10 9 LVDS0_EDP0_DSI0_D1_CN_N GND 12 11 GND LVDS_BLKT0_CTRL 14 13 LVDS0_EDP0_DSI0_D2_CN_P LVDS_BLKT0_EN 16 15 LVDS0_EDP0_DSI0_D2_CN_N GND 18 17 GND LVDS_BLKT0_EN 20 19 LVDS0_EDP0_DSI0_D3_CN_P LCD0_VDD_EN_3V3 22 21 LVDS0_EDP0_DSI0_D3_CN_N eDP_HPD_DSI0_TE_3V 24 23 GND DDC0_DAT 26 25 LVDS0_EDP0_DSI0_CK_CN_P DDC0_CK 28 27 LVDS0_EDP0_DSI0_CK_CN_N GND 30 29 GND LVDS Pin Header 1 Function Pin Number Pin Number Function PNLPWR 2 1 LVDS1_EDP1_DSI1_D0_CN_P .+VDD_PANEL1_EDID 4 3 LVDS1_EDP1_DSI1_D0_CN_N .+VDD_PANEL1_EDID 6 5 GND .+VDD_PANEL1 8 7 LVDS1_EDP1_DSI1_D1_CN_P .+VDD_PANEL1 10 9 LVDS1_EDP1_DSI1_D1_CN_N GND 12 11 GND LVDS_BLKT1_CTRL 14 13 LVDS1_EDP1_DSI1_D2_CN_P LVDS_BLKT1_EN 16 15 LVDS1_EDP1_DSI1_D2_CN_N GND 18 17 GND LVDS_BLKT1_EN 20 19 LVDS1_EDP1_DSI1_D3_CN_P LCD1_VDD_EN_3V3 22 21 LVDS1_EDP1_DSI1_D3_CN_N eDP_HPD_DSI1_TE_3V 24 23 GND DDC1_DAT 26 25 LVDS1_EDP1_DSI1_CK_CN_P DDC1_CK 28 27 LVDS1_EDP1_DSI1_CK_CN_N GND 30 29 GND Jumper Settings Interface Setting Can Bus on = Terminated 120 Ohm LVDS Backlight 1 ~ 3 = 5V | 3 ~ 5 = 3,3V SPI1 Voltage 1 ~ 2 1,8V | 2 ~ 3 3,3V USB Mux 36 ~ 38 = M.2 | 38 ~ 40 = USB HDMI Coupling 35~37 = AC | 37 ~ 39 = DC SMARC Power Seq ON = 2,1 | OFF = 2,0