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OMAP4460 Max. NAND Flash density support

sachin nalbalwar
Prodigy 200 points

Hi,

What is maximum density/size NAND Flash we can interface with OMAP4460?

Thanks,

Sachin Nalbalwar

  • 0
    Guru 31670 points

    Sachin,

    I'm not sure about the maximum size. But it will support various page sizes like 4K and it depends on the ECC algorithm with which you can support the ECC requirements of your NAND. If you can mention the part number that you are looking for, then I can suggest whether it is supported or not.

    If you have higher capacity requirements, then have you explored using eMMC where you don't have to bother about the page sizes and algorithm issues?

  • 0 in reply to Renjith Thomas
    Prodigy 200 points

    Hello Ranjit,

    Thanks for the suggestion.

    I am planning to use either MT29F2G08ABAEAWP [16Gbit]  or if it supports higher size then i will use MT29F32G08ABCABH1-10 [32Gbit] part.

    Please let me know if i can use any one of these.

    Sachin

     

  • 0 in reply to sachin nalbalwar
    Guru 31670 points

    Sachin,

    The first MT29F2G08ABAEAWP is definitely supported. I'm bit skeptical about the 32-Gbit part as it is haveing 8KB page size. It is not supported in the NAND memory list. But since it is ONFI compliant, my gut feeling is that it should boot up fine. 

    Have you explored the option of using eMMC?

  • 0 in reply to Renjith Thomas
    Prodigy 200 points

    Hello Ranjit,

    Thanks for the clarification and confirmation.

    Is there any document /site available to see list of supported memeory/ devices? if yes, can you share it.

    Yes, i am going to put eMMC option also.

    Thanks,

    Sachin Nalbalwar

     

  • 0 in reply to sachin nalbalwar
    TI__Expert 8055 points

    Sachin,

    According to the OMAP4460 TRM (located here http://www.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?templateId=6123&navigationId=12037), the GPMC, which interfaces the NAND, can support up to 1GB:

    Eight independent GPMC chip-selects (gpmc_ncs0 to gpmc_ncs7) are available in the first quarter
    (Q0) of the addressing space to access NOR/NAND flash and SRAM. The chip-selects have a
    programmable start address and programmable size (16MB, 32MB, 64MB, or 128MB) in a total
    memory space of 1GB.

    As Renjith mentioned, we recommend that you use an eMMC part, which handles ECC internally and simplifies your development.

    Regards,
    Gina 

  • 0 in reply to sachin nalbalwar
    Guru 31670 points

    Sachin,

    Check the section "Initialization and NAND Detection" in the OMAP4 latest TRM.