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Altera_Forum
Honored Contributor
15 years agoFitter ignoring PLL compensation assignment as invalid
Hi all, Fitter ignoring PLL compensation (source synchronous mode) assignment as invalid. Any ideas as to why this may be happening? I am using Quartus v 10.1
Altera_Forum
Honored Contributor
15 years agoCan you be a little more specific, and provide some more detail? In source synchronous mode, the PLL compensates the clock so that the clock-data relationship at the pins of the device is maintained at the input register (assuming you don't add any -offset or -phase adjustments to the PLL output clock.)