Warner struggled to fight back the tears as he read a prepared statement in which he said his actions had been "inexcusable".
The former vice-captain was identified by a CA investigation as the main instigator of the plan to scuff up the ball with sandpaper.
Warner also said that "There's a tiny ray of hope that I may one day be given the privilege of playing for my country again but I'm resigned to the fact that that may never happen again," the 31-year-old told reporters at the Sydney Cricket Ground. "In the coming weeks and months I'm going to look at how this happened and who I am as a man. I will seek out advice and expertise to help me make serious changes."