Quote:
Originally Posted by timytamy
On the diagram under the custom electronics port, it shows that the DIO has been pulled up to 3v3, implying that it uses 3v3 logic levels. Could you clarify, what logic levels does the RoboRIO use on both the main IO and MXP port? I believe I saw a voltage selection jumper on some alpha pics, implying that voltage is selectable, does this work and does it affect both the main-IO and MXP or just one?
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The jumper only affects the DIO power pins on the built-in DIO connectors. The MXP has both power supply rails included, so the board may use either one as needed. The I/O itself in both MXP and built-in DIO is not affected by the jumper. All DIO is 3.3 V drive and 5 V tolerant.