Intel® Cyclone® 10 LP Core Fabric and General Purpose I/Os Handbook

ID 683777
Date 2/15/2023
Document Table of Contents Zero-Delay Buffer Mode

In zero-delay buffer (ZDB) mode, the external clock output pin is phase-aligned with the clock input pin for zero delay through the device. When using this mode, use the same I/O standard for the input clock and output clocks to ensure clock alignment at the input and output pins.

Figure 47. Example of Phase Relationship Between the PLL Clocks in ZDB Mode