When the Phase Alignment feature is enabled, the automatic control
on-chip Clkfb_in and Clkfb_out ports are not exposed in the IP.
Figure 1. Automatic Control on-Chip
Figure 2. Automatic Control off-Chip
Figure 3. User Controlled ON or OFF Chip
When the Phase Alignment feature is disabled, the Clkfb_in and Clkfb_out
ports are not exposed to the IP. CLKFBIN is directly
connected to CLKFBOUT.