Clock Buffers and Clock Routing

UltraScale Architecture Clocking Resources User Guide (UG572)

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1.10.2 English

Global clocks are a dedicated network of interconnects specifically designed to reach all clock inputs to the various resources in a device. These networks are designed to have low skew and low duty cycle distortion, low power, and improved jitter tolerance. They are also designed to support very high-frequency signals.

Understanding the signal path for a global clock expands the understanding of the various global clocking resources. The global clocking resources and network consist of these paths and components:

Clock Structure

Clock Buffers

BUFGCTRL Clock Buffer Primitives

Additional BUFGCTRL Use Models

BUFGCE Clock Buffers

BUFG Clock Buffer

BUFCE_LEAF Clock Buffer