Answers Database

XC4000EX/XL: Some BUFGEs (Eearly buffers) are faster than others


Record #3165

Product Family:  Hardware

Product Line:  4000EX

Problem Title:
XC4000EX/XL: Some BUFGEs (Eearly buffers) are faster than others


Problem Description:
The BUFGEs 3, 4, 7, and 8 are faster than the BUFGEs 1, 2, 5
and 6. The speed difference is about 10%.
You can find out what BUFGE number corresponds to a specific
pin number by referring to the PGCK# pin on the package
pinouts.


Solution 1:





End of Record #3165