How can we process the address pins connection when extending a 64MB Sdram to AM1705's EMIFB?

AS the EMIFB's document shows, we can directly connect the A[0:12] to Sdram's A[0:12]. you know,the A10 has a special function of AP(when high), so I was confused with it now. I will be grateful if you could provide me with some sincere guidance,Thanks.