Ala. Code § 12-22-172

In the case of a misdemeanor, the defendant may confess judgment, with sufficient sureties, for a fine and costs as if no appeal were taken, but execution thereon must be stayed pending the appeal, pursuant to the Alabama Rules of Appellate Procedure. If the judgment of conviction is reversed, the confessed judgment is thereby vacated, but if the judgment of conviction is affirmed or the appeal is dismissed, execution on such confessed judgment may issue at once.