Binu, Originally posted in cdnusers.org by horner
This is a pretty open ended question. Basically you need to get the model for the DSP, associate that model to the device on the board, then extract the net into SigXP where you can do a lot of "what if" simulations to help determine the proper termination schemes, topology structures like star, daisychain, ...
All of this is covered in the training course available for Allegro PCB SI.
There are also some pretty good material available on this forum in the form of movies that will help describe this as well. Refer to the movies
Drawing Simulations at the Board Level
Archived Webinar: Signal Integrity at the Electrical Engineer Level
both of which can be found in the Movies and Webinars section.