I would think this question would be better served by the Agile and Other Processes forum. I've never heard of TOGAF, but I'm not really in the enterprise planning game. What are you planning to do with the specification? In the Google search you specify, there's an IBM-authored introduction that would probably be informative. Do you have any practical enterprise experience? That's probably your first hurdle.
The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way. - Heraclitus