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KousikGhosh12's avatar
KousikGhosh12
Icon for New Contributor rankNew Contributor
3 years ago

Floating point representations in VHDL

I am using MAX10 FPGA for closed-loop control of the DC-DC Converter with PI implemented in MAX10 using VHDL. I wanted to know how to represent floating-point(decimal for e.g. 1.23, 0.31) values in F...
FvM's avatar
FvM
Icon for Super Contributor rankSuper Contributor
3 years ago

Hello,

I doubt that's a good idea to use actual floating point numbers for your PI controller. Quartus floating point IP (FP mega function) is useful, if your application needs to expose a floating point data interface to communication partners. To represent fractional decimal numbers like 1.23, 0.31, almost every FPGA application uses integer numbers with an implied power of 2 scaling factor. You use VHDL fixed_pkg or own methods with similar functionality.

Frank