Fields was released on a $3,500 bond. If convicted, Fields could face up to a year in jail and a $4,000 fine.
The junior was separated from the university earlier this week when reports emerged he was a suspect in a domestic disturbance from last Sunday. Fields allegedly pointed a gun at his ex-girlfriend, yelled "I should blast you!" and then punched her in the head.
Fields was the Big 12 defensive freshman of the year in 2012 and was named the conference's preseason defensive player of the year at media days this week. He played in just three games last season due to a suspension for violating team policy and a subsequent foot injury.
TCU coach Gary Patterson said Thursday he was disappointed by Fields's situation.
- Ben Estes