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Compiler/TMS320F28377D: When I want to use a 256M*16 SDRAM and a 2M*16 SRAM together, how to config the EMIF ?

user5063758
Prodigy 230 points
Part Number: TMS320F28377D

Tool/software: TI C/C++ Compiler

I see the datasheet of the "EMIF Chip Select Memory Map", I can use CS0 to select the 256M*16 SDRAM(4 bank), and CS2 to select the 2M*16 SRAM. I have two question.

1.  I want to know how to connect the DSP, SDRAM and SRAM in physics.

2.  Just like the pin170(GPIO88/EM1A15/EM1DQM0), it is a multiplexi pin. If I have to use DQM0. Does that mean I can't use EM1A15? And how to connect the address bus?

Thank you!

  • 0
    TI__Guru** 115291 points

    Hi,

    Please refer following post -

    2.  Just like the pin170(GPIO88/EM1A15/EM1DQM0), it is a multiplexi pin. If I have to use DQM0. Does that mean I can't use EM1A15? And how to connect the address bus?

    That is correct. But if you are using 16bit ASRAM then you don't have to use the DQMx pin instead you can tie these pin to active state for memory on board. Please note that in case of 16bit Memory max address space is 1M x 16 only. It is mentioned in the device datasheet.

    Regards,

    Vivek Singh