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Does OMAPL137 support a single 8-bits SDRAM?

zhangyg44396
Intellectual 400 points

Hi folks

Does OMAPL137 support a single 8-bits SDRAM?

I just found the read-write operation to 8bit SDRAM is not functioning normally.

Is there a solution?

thanks very much in advance.

hugo

 

  • 0
    TI__Intellectual 880 points

    Hello Zhangyg ,

                             OMAPL137 does not support 8-bits SDRAM.

                              There is two external memory interfaces that provide multiple external memory options accessible by  

                       the CPU and master peripherals:

     

                       1. EMIFA:  16-bit SDRAM with 128-MB

                       2. EMIFB supports 32/16-bit SDRAM with up to 256-MB SDRAM

     

                          Only 8/16-bit wide asynchronous EMIF module that supports ASRAM.

    Abhijit

     

     

  • 0 in reply to Abhijit Das84416
    Intellectual 400 points

    Abhijit Das84416 said:

    Hello Zhangyg ,

                             OMAPL137 does not support 8-bits SDRAM.

                              There is two external memory interfaces that provide multiple external memory options accessible by  

                       the CPU and master peripherals:

                        1. EMIFA:  16-bit SDRAM with 128-MB

                       2. EMIFB supports 32/16-bit SDRAM with up to 256-MB SDRAM

                          Only 8/16-bit wide asynchronous EMIF module that supports ASRAM.

    Abhijit

    Hello Abhijit

    Thanks for your kind help.

    I think OMAPL137 can support 8-bits SDRAM by combining 4 pcs 8-bits chips, right?

    Or Should I have to using two 16-bits chips or one single 32-bits chips?

     

    thanks again

     

    Hugo

  • 0 in reply to zhangyg44396
    TI__Mastermind 27585 points

    Hi Hugo, no the device only supports 1x or 2x chip configurations. You cannot use 4x 8-bit chips.

    Jeff