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TDA2: TDA2SX EMIF DDR3

Yuri Oreshnikov
Intellectual 260 points
Part Number: TDA2

Hi.

We are ging to use this IC. So can we use only one emif1 interface with DDR3 or we must use both emif1 and emif2 with DDR3?

Thnks.

  • 0
    TI__Guru 55685 points

    Hi,

    You can use only one EMIF as well depending on the use case requirements.

    Regards,

    Rishabh

  • 0 in reply to Rishabh Garg
    TI__Mastermind 42515 points
    Hi Yuri,

    in addition to what Rishab said: if you want to use only EMIF1 or EMIF2 you need to correctly configure the LISA_MAP registers in DMM. This is explained in section “Addressing Management with LISA” of the TDA2x TRM. Take also into account that when you use only one EMIF, the max SDRAM size is 2GB.

    Regards,
    Yordan
  • 0 in reply to Yordan Kamenov
    Intellectual 425 points
    Hi Yordan.
    I have a little question. In TRM written " In this example, assume there is 1 GiB of external memory evenly spread onto two address spaces. The address range for address space 0 must start at offset 0x2000_0000 (see Table 15-19)." Summary address space is 1 GiB in table 15-19. How can I connect 2 GiB memory to EMIF1?
    I want to use only EMIF1 with ECC too. I want to use 2 ICs MT41K256M16 and one IC MT41K512M8 for ECC. Is that correct configuartion?
    Regards, Maxim.
  • 0 in reply to Maxim Galkin41
    TI__Guru 55685 points
    Hi,

    If you want to use 2 GB DDR, you should set 0x7 as SYS_SIZE in LISA_MAP.
    For the question related to hardware parts please start a new thread.

    Regards,
    Rishabh