Cyclone V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683375
Date 7/05/2022
Document Table of Contents

4.2.10. Programmable Phase Shift

The programmable phase shift feature allows the PLLs to generate output clocks with a fixed phase offset.

The VCO frequency of the PLL determines the precision of the phase shift. The minimum phase shift increment is 1/8 of the VCO period. For example, if a PLL operates with a VCO frequency of 1000 MHz, phase shift steps of 125 ps are possible.

The Intel® Quartus® Prime software automatically adjusts the VCO frequency according to the user-specified phase shift values entered into the IP core.

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