7.2 Pin List

The following tables provide the SAM9X75 SOM Series module pin descriptions.

Important: Compared to the SAM9X75 SiP device, some PIO features are not listed. These features are used internally on the SAM9X75 SOM Series and cannot have other uses.

The device features several PIO controllers that multiplex the I/O lines of the peripheral set. The following PIOx Pin Description tables define how the I/O lines are multiplexed on the different PIO controllers. The "Reset State" column shows whether the PIO line resets in I/O mode or in Peripheral mode. If I/O is shown, the PIO line resets with the characteristics (input, output, pull-up or pull-down) indicated in this same column, so that the device is configured in a known state as soon as the reset is released. As a result, PIO_CFGR.FUNC resets to ‘0’. If a signal name is shown in the “Reset State” column, the PIO line is assigned to this function and PIO_CFGR.FUNC is not set to ‘0’. That is the case for pins controlling memories, in particular address lines, which require the pin to be driven as soon as the reset is released.