15.4 Signal Description
| Signal | Description | Type | 
|---|---|---|
| XIN32 | Analog Input | 32.768 kHz Crystal Oscillator or external clock input | 
| XOUT32 | Analog Output | 32.768 kHz Crystal Oscillator output | 
The I/O lines are automatically selected when XOSC32K is enabled.
Note: The signal of the external crystal oscillator may affect the jitter of neighboring
         pads.
