AR# 9470

Virtex/-E - Will the CLKDLL keep its lock if the input clock duty cycle changes but the period remains the same?

Description

Will the CLKDLL keep its lock if the input clock duty cycle changes but the period remains the same?

Solution

Yes, the CLKDLL will stay locked in this circumstance. The DLL looks only at the positive edge of the clock, so the duty cycle of the clock is not a concern. As long as the period does not change, it will stay locked.

AR# 9470
Date 05/14/2014
Status Archive
Type General Article