Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

How to define contant look up tables (LUT) ??

Hello.. I can define LUT4 (4 input, 16 bit init value) and LUT5 (5 input, 32 bit init value) look up tables with constant values on Lattice Diamond in this way; LUT5 # (.init (32'h3...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Did you consider to build the look-up tables with internal ROM?

Generally, I would leave logic cell selection and timing optimization to the design compiler by writing a behavioral description, and timing constraints, if necessary.