TRACON DEP CTLR ISSUES MD88 FLC EVASIVE MANEUVERS DUE TO NON COORD OF OTHER DEP OFF OF PARALLEL RWY.

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DEPARTED DAB WITH INITIAL CLRNC OF RWY HDG AND 5000 FT. HANDED OFF TO DEP CTL AND CHKED IN PASSING 1700 FT. CTL CALLED OUT TFC AND INSTRUCTED US TO IMMEDIATELY DSND TO 1500 FT AND TURN R. A FIRM CORRECTION BACK TO 1500 FT (MAX ALT ATTAINED 2000 FT) WAS ACCOMPLISHED AND A PROMPT 30 DEG BANK R TURN WAS INITIATED. AFTER CLR OF CONFLICT; I WAS TOLD TO CONTACT CTLR SUPVR FOR MORE INFO UPON REACHING DEST OF ATL. FLT PROCEEDED WITHOUT FURTHER INCIDENT TO ATL. IN CONVERSATION WITH TWR SUPVR; HE INDICATED THAT THE PROB OCCURRED BECAUSE OF A MISUNDERSTANDING BTWN THE TWR CTLR AND DEP CTLR. THE TFC IN QUESTION WAS AN ACFT DEPARTING RWY 7R. THE TWR CTLR HAD GIVEN THE LIGHT ACFT INSTRUCTIONS FOR TKOF AND HAD NOT COMMUNICATED THOSE INSTRUCTIONS TO THE DEP CTLR. CONSEQUENTLY; THE DEP CTLR PERCEIVED A CONFLICT BTWN THE LIGHT ACFT DEPARTING RWY 7R AND OUR ACFT DEPARTING RWY 7L. BECAUSE OF THE POTENTIAL THREAT OF A MIDAIR COLLISION THE DEP CTLR ISSUED THE INSTRUCTIONS TO US TO TAKE THE EVASIVE ACTIONS DESCRIBED ABOVE. TWR SUPVR INDICATED THAT HE REPRIMANDED BOTH TWR AND DEP CTLRS AND INSTRUCTED THEM ON PROPER PROCS. HE ALSO STATED TO ME THAT THE 2 ACFT DID NOT COME CLOSE ENOUGH TO CLASSIFY THE SIT AS A NMAC.