Talon CAN bus IoT Card: why is there a level shifter?

1

Hello everyone. I’m analyzing more the circuitry behind the mangOH systems. Could anyone explain to me better why there is a level shifter on the Talon CAN IoT CARD? The motivation that I gave myself is the following: from the datasheet you can see that the output voltage of the mangOH goes from 4.5 V to 17 V (really 17 V ?!)

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while the Talon module accepts input voltages between 1.8 V and 3.3 V.
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Is it fair to say that the level shifter is used to adapt the voltages on both sides to each other? Also I saw that the level shifter is enabled on GPIO 13: why is it done sometimes yes and sometimes not? Thanks to anyone who wants to help me, regards

2

the power supply 4.5V to 17V is the input voltage to CN1200 on mangoh green board.

I believe the SPI bus from WP module is 1.8V system.

3

From the Power Managment on Developer’s Guide, can we say that IOT0 works at 1.8 V?

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4

IOT0 contains a lot of pins, which pins are you referring to?

5

ok solved, it was reported in another manual:
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Thank you for the help :slight_smile: