Chris Brown I Didn't Confess to the D.C. Assault

5/10/2014 7:40 AM PDT

Chris Brown -- I Didn't Confess to the D.C. Assault

Chris Brown did NOT admit he assaulted the alleged victim in his D.C. criminal trial.

Mark Geragos Tells TMZ ... when Brown admitted to a probation violation Friday in the Rihanna case ... it did NOT constitute a confession in his assault case. Geragos says all Brown did was admit he violated probation in D.C. -- he was not more specific. 

Geragos tells us ... HE -- not Chris -- conceded there was a factual basis to conclude his client violated probation based on the police report.

What's more, Geragos says there's no way the D.C. prosecutor could use Brown's admission as a confession, because the standard of proof in a criminal case is much higher than in a probation hearing. 

Geragos says he merely told the Rihanna judge it's "more likely than not" that Chris screwed up in D.C.  In a criminal trial, the prosecutor must show Chris screwed up beyond a reasonable doubt.

As we reported ... even though Chris was ordered to serve another 131 days behind bars for the probation violation ... with time served and jail overcrowding, he could get out in a matter of days.