Mca Ios - Digi ConnectCore 8X Hardware Reference Manual

Releases the reset line of the CPU to allow starting the execution of the firmware on the i.MX
n
8X processor.
Note The CPU reset line is also connected to the PMIC. The PMIC won't release this line until it
is switched on and the entire starting sequence is finished (a few ms after the latest regulator
is turned on). This means that even if the MCA releases the reset line before the PMIC is ready,
the CPU won't go out of reset.
The following time diagram represents the reset sequence. Default values are as follows:
tr : 50 ms
n
1
tr : 2 ms
n
2
See System power-up
the ConnectCore 8X.
Reset line internal connection

MCA IOs

The ConnectCore 8X MCA provides up to 19 configurable IOs.
Because the general purpose IOs do not incorporate internal pull-ups or pull-downs, you may have to
add the components to the module carrier board.
The following table lists all available MCA IOs with their configurable capabilities:
ConnectCore® 8X System-on-Module Hardware Reference Manual
sequence for more information about the power-up sequence of
The Digi Microcontroller Assist™ hardware
33