When generating 2-port RAM using the Quartus II IP Catalog, you may not be able to use Byte Enable port depending on the data width of the two ports. What restrictions are there?

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When generating a 2-port RAM in the Quartus II IP Catalog, you may not be able to use the Byte Enable port due to the data width of the two ports. What are the restrictions?

Category: IP
Tools: Quartus® II
Device: Cyclone® IV

Byte Enable can be used when the data width ratio of Port A and Port B is 1 or 2.

For details, refer to the document below.
https://www.altera.com/en_US/pdfs/literature/ug/ug_ram_rom.pdf
(Search for Create byte enable for port A and Create byte enable for port B.)

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