LVDS-RX model simulation error

Hi, all

I 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!