"don't cares" on ibuf output

Sep 18, 2004 0 Replies

Hello all :)



I'm doing back annotated simulation in ModelSim 5.6e with at94k_ver library(Atmel AT94K FPSLIC). Clock signals can't pass through the input buffers, the output of the ibuf module is "don't care" in ModelSim waveform viewer...Clock frequency is below the design's maximum frequency. Can anybody tell me what's wrong?


Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required