SDRAM addressing

Discussion in 'General Electronics Chat' started by Jane1, Feb 22, 2012.

  1. Jane1

    Thread Starter New Member

    Sep 28, 2011
    13
    0
    In my Linux embeded device I have 4 SDRAM modules.( Each module is of
    16 bit data bus and 13 bit address bus )
    I need to find out how they are addressed

    if it is like this :

    1st addres in module 1
    2nd address in module 1
    3rd address in module 1
    4th address in module 1
    5th address in module 1
    6th address in module 1
    7th address in module 1
    8th address in module 1
    ...
    ...
    the last but one address in module 4
    the last address in module 4


    or
    1st addres in module 1
    2nd address in module 2
    3rd address in module 3
    4th address in module 4
    5th address in module 1
    6th address in module 2
    7th address in module 3
    8th address in module 4
    ..
    ..
    the last but one address in module 3
    the last address in module 4

    Is it possible?
    ( Via JTAG I can "talk" to CPU directly and write to an address, if it helps)
    Thanks
     
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