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Altera_Forum
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15 years ago

problem with value 'X' in VHDL

Dear my best friends I used vhdl to calculate SVPWM algorithm. I used LPM library for divider. I'd already initial value for all of signal, but It still has "X" value. This is LPM library m0...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

X output is usually the result of trying to drive 1 bus from two sources, or you put an invalid value (like 'X' or 'U) into the multiplier. The error will be with the source data.