Description
You may find that "Phase shift step resolution" value in the altpll MegaWizard™ Plug In Manager are different between external feedback mode and other feedback modes in Stratix® III and Stratix IV devices?
This is a bug in the Quartus® II software. The compensation mode should not affect the phase shift resolution. The phase shift resolution is based on the VCO frequency of the PLL.This issue will be fixed in a future version of Quartus II software.