Depending on if you have any other legal history with the state, especially in terms of a negligent driving record, or a habitual offender type status, then many times people will face a suspended sentence, probation, a fine and community service in these situations. Not knowing all the details of your situation, and not being an attorney in Tennessee, make sure you consult with one.
Driving while revoked or suspended in the state of Tennessee is considered a Class E felony. In the State of Tennessee punishment for a Class E Felony is not less than 1 year and not more than 6 years in prison, the jury may also impose a fine of up to three thousand dollars. This is the information I was able to find, you should probably consult with a Tennessee Attorney.
I think it will depend on what the cause of the suspension is. If it is DWI related within the last 10 years then jail is a very likely outcome. Otherwise it would probably be some combination of a fine and schooling, though jail is technically a possibility.