UPDATE_MODE Attribute

UltraScale Architecture SelectIO Resources User Guide (UG571)

Document ID
UG571
Release Date
2022-08-31
Revision
1.14 English

Leave this attribute set to ASYNC to increment or decrement to the delay value independent of the data being received. When set otherwise (SYNC), the delay line is synchronously updated upon receiving changing input data.

 

CAUTION!   When no precautions are taken in the application design, the attribute set to SYNC might cause unwanted effects such as sudden data glitches in the design.