22.214.171.124.1 Input Format for SYNC and SysRefReq Pins
These pins are single-ended, but a differential signal can be converted to drive them. In the LVDS mode, if the INPIN_FMT is set to LVDS mode, then the bias level can be adjusted with INPIN_LVL and the hysteresis can be adjusted with INPIN_HYST.
Figure 31. Driving SYNC/SYSREF With Differential Signal