set_case_analysis - 2021.2 English

Vivado Design Suite User Guide: Power Analysis and Optimization (UG907)

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2021.2 English
For global clock primitives (BUFG, BUFGCE, BUFGCE_DIV, BUFG_GT, BUFGCTRL), the enable/selection of clock is determined by set_case_analysis command. This command guides the timing analyzer to identify the clocks across clocking logic. For example the select signal of BUFGMUX must be set using set_case_analysis to guide the timing analyzer's clock selection. This in turn helps Report Power to estimate power using the right clock. For BUGCE block, CE input must be set using set_case_analysis to enable or disable the clock output.