As rightly pointed out MAX ACC ALTITUDE is ten minutes limited after T/O acceleration altitude. It is given at the bottom of the RTOW chart. It is not related to Missed Approach ACC Altitude as the point at which MA is initiated and at which the a/c gets airborne on T/O are not same. More over MA procedure and departure procedure may be different. Some airlines use missed MA ALT as acceleration altitude. However if the MA is high then airbus recommends to find out if acceleration is possible before the MA ALT. This is airline's job and it is not specified by the authority.