SNAS696C March 2017 – April 2019 LMX2594
The requirements for SYNC depend on certain setup conditions. In cases that the SYNC is not timing critical, it can be done through software by toggling the VCO_PHASE_SYNC bit from 0 to 1. When it is timing critical, then it must be done through the pin and the setup and hold times for the OSCin pin are critical. Figure 27 gives the different categories.