CASCADE_HEIGHT - 2022.1 English

Vivado Design Suite User Guide: Synthesis (UG901)

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2022.1 English

When cascading multiple UltraRAMs (URAMs) together to create a larger RAM, Vivado synthesis limits the height of the chain to 8 to provide flexibility to the place and route tool. To change this limit, you can use the CASCADE_HEIGHT attribute to change the default behavior.

Note:   This option is only applicable to UltraScale architecture BRAMs and URAMs.