FO OF AN AIRBUS A320 OVERSHOT XING ALT DURING SID DEP RESULTING IN ATC PROVIDING THE NEXT 1000 FT HIGHER ALT THAT WAS ALSO OVERSHOT. THE PROB WAS DUE TO THE CAPT'S UNFAMILIARITY WITH THE FMS TO OBTAIN DESIRED RESULTS AND THE FO DISCONNECTING THE AUTOPLT TO FLY THE ACFT MANUALLY. BOTH CREW MEMBERS WERE UNFAMILIAR WITH THE SID.

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CLBING OUT OF SJC ON RWY HDG; DANVILLE 1 DEP; CTLR CLRED US TO FL230; TURN R DIRECT TO SJC AT OUR DISCRETION TO MAKE XING AT SJC AND MAINTAIN 250 KTS. ACCORDING TO OUR CALCULATIONS WE COMMENCED TURN TO MAKE SURE WE WOULD BE AT 12000 FT OVER SJC; THINKING THAT THE RESTR TO MAINTAIN 12000 FT HAD BEEN DELETED WHEN WE WERE CLRED TO FL230. ACFT CLBING OUT IN MANAGED NAV AND EXPEDITE CLB; VERT ASCENT WAS QUITE HIGH. ONCE WE ASCERTAINED THAT WE WOULD MAKE THE 12000 FT MANAGED VERT WAS SELECTED; BUT ACFT OVERSHOT THE 12000 FT ALT. PF WAS THE FO. HE DISCONNECTED THE AUTOPLT IN ORDER TO RECOVER TO 12000 FT. I QUESTIONED THE CTLR ON WHETHER WE WERE TO CROSS SJC AT 12000 FT; OR AT OR ABOVE 12000 FT AND CLB TO FL230. HE CONFIRMED THAT WE WERE TO CROSS AT 12000 FT; BUT SINCE WE WERE ALREADY ABOVE 12000 FT TO CONTINUE CLB TO 13000 FT. THE FO HAD HIS HANDS FULL; TRYING TO HAND FLY THE ACFT MAINTAINING 13000 FT AND THE RESTR AIRSPD OF 250 KTS. WHEN ACFT WAS IN EXPEDITE CLB; AIRSPD AND ALT RESTRS IN THE MCDU WERE NEGATED. DUE TO MY RECENCY OF EXPERIENCE IN THIS ACFT; NOT BEING USED TO THIS PARTICULAR DEP; AND BEING REQUESTED TO ACCOMPLISH SEVERAL COMMANDS WITH THE CONFUSION OF AN ALT CLRNC WITH OR WITHOUT THE SAME XING RESTR AS ON THE DEP; WAS SOMEWHAT OVERWHELMING TO THIS SHORT PERIOD OF TIME. MAYBE IN THE FUTURE THE CTLR COULD CONFIRM THE XING ALT THEN ADVISE OF A NEW CLRNC ALT.