AT91RM9200- SDRAM interface

Hi,
  Can anyone explain why the address line A14 from AT91RM9200 is connected
to NC pin of SDRAM (MT48LC8M16A2)? (reference: AT91RM9200ek-userguide,
SDRAM interface section)
Thanks
S Mahesh.

MaheshS wrote:

>   Can anyone explain why the address line A14 from AT91RM9200 is connected
> to NC pin of SDRAM (MT48LC8M16A2)? (reference: AT91RM9200ek-userguide,

Hint: JEDEC pinout.