Hi Wajahat,
I have never worked on something like this so I am not sure how you could go about doing so. I have done a google search and I was able to find some resources that might be helpul to you. http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&hs=OS7&q=TI-6713+QAM&btnG=Search
Keep checking here also as someone who has worked on this might be able to give you more information.
Eli S.
National Instruments
Applications Engineer