DM3730 CUS PACKAGE GPMC PIN MULTİPLEX FOR SRAM CONNECTION

Hi,

My 1MB nvsram has 19 Adress bits but the dm3730 has only  A1-A11 adress pins. And also A11 pin is indicated as N/A for CUS package as  below in datasheet:

I

Does anyone knows what to do with  gmpc_a11 pin ?

On the other hand Could you please me help how to extend  gmpc address pins to 19 ? Should I use lacthes ?

Thanks