MATLAB: In R2018a, how can I force HDL Coder to generate HDL code for a lookup table to use RAM or Block RAM

bramHDL Coderlut

I want to ensure that my LUT gets mapped to RAM by my synthesis tool.
How can I ensure the generated HDL code will indicate this to the synthesis tool?

Best Answer

RAM can be enforced in a synthesis tool by using synthesis attributes in the generated HDL code.
Currently (R2018a), HDL Coder does not have the ability to insert these synthesis attributes.
However, a common modeling pattern for lookup tables produces HDL code that is usually mapped to RAM:
https://www.mathworks.com/help/releases/R2018a/hdlcoder/examples/getting-started-with-ram-and-rom-in-simulink.html#d119e6246
If this approach does not map to RAM for a particular model, please contact MathWorks Technical Support.
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