CCS/LAUNCHXL2-570LC43: External SDRAM IS42S86400F-7TLI Interface issue

Tool/software: Code Composer Studio

Hi,

       I am utilizing LaunchXL2-570LC43 launchpad for our project and we have interfaced external SDRAM IS42S86400F-7TLI to the launchpad through the hirose connectors. I am able to read and write in the desired locations but additionally it is also writing in another undesired location with an address offset of hexadecimal 20. To elaborate say I write data in the SDRAM  location 0x80000000 it is also writing in the location 0x80000020. Kindly help in debugging this issue.