TMS570LS1227: EMIF Module Addressing with External Asynchronous Memory

Hi,

I am using TMS570LS1227 in one of the custom board design. 

I am interfacing EMIF module with External Asynchronous Memory. 

Configuration is 

Normal Mode, 16 bit data width.

Currently i am referring section17.2.6.1 in spnu515b and section 17-8.b for the 16-bit data bus normal mode configuration.

Below is the mapping of address lines of Hercules EMIF module with External Asynchronous Memory 

I am getting the understanding that BA[0] can be served as EMIF_A[12] . So BA[0] can be connected to A13 of the Asynchronous memory.

I am referring section 17.2.6.1 Interfaces to Asynchronous section. Below is information took from the section.

"Additionally, when the EMIF interfaces to a 16-bit asynchronous device, the EMIF_BA[0] pin can serve as the upper address line EMIF_A[12]."

My question is which line i have to use either BA[0] or A12 to connect the A13 address line of the Asynchronous Memory?

So i am bit confused. So kindly some one suggest on this? So that i can design the custom board accordingly?

Thanks 

Chinnasamy.