Hi, allI use ModelSim to generate waveform with IP LVDS model. I type run 1us in the transcript. However, the waveform simulation stuck at 305ns as shown in figure below. May I know what happen actually? http://www.alteraforum.com/forum/attachment.php?attachmentid=10373&stc=1 For LVDS spect, as below: input data rate: 100Mbps input clock freq: 100Mbps rx_in : 12 bit deserialise factor: 4 Thanks!