TB3287

3.2 Supplying Power To VDDIO2

The Multi-Voltage I/O (MVIO) can be configured in one of two supply modes:

Single-Supply mode, where the MVIO-capable I/O pins are powered at the same voltage level as the non-MVIO capable pins, i.e., VDD. The user must connect the VDDIO2 pin(s) to the VDD pin(s).
Dual-Supply mode, where the MVIO-capable I/O pins are supplied by the VDDIO2 voltage, which may be different from the voltage supplied to the VDD pin(s)

Figure 3-3. FUSE.SYSCFG1 - Enabling Dual Supply Mode

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