He is to report to jail March 20, Los Angeles City Attorney spokesman Frank Mateljan told E! News, confirming Brown's no contest plea and sentence Tuesday.
The 55-year-old singer also was placed on 48 months summary probation and ordered to pay fees, complete an 18-month alcohol program and install an ignition interlock device that prohibits the driver from starting the car if his or her blood alcohol content is over a certain limit, E! News said.
Brown's license was suspended due to a prior conviction for driving under the influence.
The singer is the ex-husband of recording artist Whitney Houston, who died in February 2012. The couple had a stormy relationship fueled by drug and alcohol abuse and their 14-year marriage ended in 2007.