IMX6 External Interrupt trigger configuratio

[rajniks]

I have few interfaces working on 2.5V and they are generating interrupts at 2.5V. Can we configure the interrupt pins to work at 2.5V level or we need to translate these 2.5V level signals to 3.3C using buffers.

[Yuri]

  To be fully on safe side it makes sense to apply voltage buffers between 2.5 V and 3.3V
signals. But one can try to analyze carefully acceptable low and high voltage levels of the signals,
using their hardware specs : perhaps there are no problems. For example - minimal output
high voltage level of 2.5V part is greater than minimal input high level of 3.3V device.

Have a great day,
Yuri

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