What voltage level should an external 32.768kHz oscillator be running at? My confusion stems from the EVM being at 3.3V but the wiki page states 1.8V (see below).
If the 32KHz oscillator you choose exceeds the rise/fall time limit, a push-pull output buffer should be used to create a faster edge. Generally, the 32KHz oscillator will be powered off the 1.8V supply. This should be used as a gating condition before applying the 32KHz to the I/Os of the processor. Alternatively, you can use the RESET output of the TPS65073 to provide a proper gating signal for this clock.
