I have a n800 and I can only see one temperature entry-- temp1_input. Reading it returns 30500, sitting on my desk while charging in a cool room. I note that the value varies in steps of 250. Dividing the value by 250 results in 122. From the TSC2301 data sheet it appears it is capable of returning the temperature in increments of 0.3 C. Multiplying 122 by 0.3 results in 36.6C or 97.9F -- a very reasonable internal temperature for charging. I'll have to do it after it's been idle (and not charging) to see if this agrees more closely with the ambient temperature.

Larry