Using a COE File - 2023.2 English

Vivado Design Suite User Guide: Designing with IP (UG896)

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2023.2 English

In certain cases, some parameter values are passed to the Vivado IP catalog using a COE (COEfficient) file; an ASCII text file with a single radix header followed by several vectors. The radix can be 2, 10, or 16. Each vector must be terminated by a semi-colon.

The Vivado tool reads the COE file and writes out one or more MIF files when the core is generated. The VHDL and Verilog behavioral simulation models for the core rely on these MIF files.

Important: You must upgrade all IP prior to adding a COE file. Additionally, locate the COE file in the same directory as the XCI file.
Note: If a COE file is no longer used by an IP, remove the file. Failure to remove an old COE file can result in both the newly associated COE and the old COE being passed to synthesis. Additionally, if the old COE is removed from disk, but not from the project, an error occurs during synthesis.