An A319 Captain discussed what he believed to be his incomplete briefing given to the Flight Attendants to prepare them for what would happen after landing when he had declared an emergency due to faulty flaps/slats. He cited his failure to keep them regularly informed as to their status and the progress of exterior inspections by CFR personnel.

Narrative

During approach we had a flap/slat fault. We followed the appropriate procedures and declared an emergency with ATC and landed the aircraft successfully. During the Flight Attendant briefing I informed them of the condition of the aircraft and the time remaining to landing; however; I missed a couple of items. Specifically I should have given them a better brief on what to expect once we landed and after the aircraft came to a stop.After landing I announced 'Flight Attendants to their stations'. Some time later; only after CFR had inspected the aircraft; did I then announce that they should 'Remain Seated' as we taxied to the gate.After I gave the emergency brief in flight; I turned the cabin volume control down. I thought I turned it down all the way; but I did not. After the aircraft came to a stop I could hear the conversation between Flight Attendants. It sounded like they were confused about being on the runway and what was taking so long for further instructions from me. I was concerned that they would evacuate the aircraft with so much time not hearing from the flight deck once the airplane was on the ground. Overhearing what sounded like confused conversation between them I decided that; if there is a next time; I will give a more detailed brief to the Flight Attendants on what to expect on the ground.