Michael Irvin tells TMZ Sports he will NOT stay quiet as cops continue to investigate the sexual assault allegation against him ... and says he will personally make a statement about the case TODAY.
We broke the story ... a 27-year-old woman accused Irvin of sexually assaulting her at a hotel in Florida on March 21. He adamantly denies any wrongdoing.
The Cowboys legend has been silent about the situation -- but as he was leaving an autograph event at the Dulles Expo Center on Sunday, he vowed to tell his side of the story.