Working with Half Data Types - 2024.1 English

Vitis Model Composer User Guide (UG1483)

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2024.1 English

Vitis Model Composer also supports a half precision floating point data type, which is 16 bits wide instead of 32 bits, because it consumes less real estate on the target device when implemented on the FPGA. This is an important consideration when designing in Model Composer. However, Simulink does not support the half data type, and this can lead to errors in simulation. The solution is to use the Model Composer DTC block to convert the half into the single data type supported by Simulink, for those portions of the design that are not in the Model Composer sub-module and will not be part of the generated output.