MMCM Clock Input Signals

UltraScale Architecture Clocking Resources User Guide (UG572)

Document ID
UG572
Release Date
2023-02-01
Revision
1.10.2 English

The possible clock sources for the MMCM include:

IBUF – Global clock input buffer. The MMCM compensates the delay of this path. IBUF represents a global clock pin in the same region. The IBUF must be located at a global clock pin location.

BUFGCTRL – Internal global clock buffer. The MMCM does not compensate the delay of this path.

BUFGCE – Global clock buffer. The MMCM does not compensate the delay of this path.