Datasheet

Peripheral interfaces
The following interfaces are available from the SoM, through the three 100-pin board-to-board connectors.
This section is organized based on the default pin functions when running the Mendel operating system. For
information about alternative pin functions you may enable with your own device tree overlay, see the iMX8M SoC
documentation.
Note: All I/O pins have a 90k pull-down resistor in the SoC that are used by default during bootup, which
you can reconfigure with a device tree overlay after bootup. However, some pins (such as I2C, some SAI,
and some SD2 pins) also have pull-up resistors inside the SoM, as noted in the following tables, which you
cannot reconfigure with a device tree overlay.
Caution: Do not connect any of the 3.3V I/O pins to a device that draws more than ~ 82 mA of power or
you will brownout the system.
MIPI camera (CSI)
There are two channels for MIPI camera serial interface (CSI-2), each with four lanes and a maximum bit rate of 1.5
Gbps.
Version 1.2 (August 2019)
Table 10. CSI channel 1 pins
Name Type Connector Pins Voltage Description
MIPI_CSI1_CLK_P/N Input J1311 18/16 0.2-1.2V MIPI CSI1 clock (positive/negative)
MIPI_CSI1_D0_P/N Input J1311 12/10 0.2-1.2V MIPI CSI1 data (positive/negative)
MIPI_CSI1_D1_P/N Input J1311 23/21 0.2-1.2V MIPI CSI1 data (positive/negative)
MIPI_CSI1_D2_P/N Input J1311 6/4 0.2-1.2V MIPI CSI1 data (positive/negative)
MIPI_CSI1_D3_P/N Input J1311 29/27 0.2-1.2V MIPI CSI1 data (positive/negative)
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