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AM6442: Does it support NAND device boot without any defect?

Jack
Mastermind 9075 points
Part Number: AM6442
Other Parts Discussed in Thread: 66AK2G12

Hi 

My customer would like to confirm if AM6442(XAM6442ASFGGAALV ) does not have NAND support problem.

This is asked they firstly considered 66AK2G12 device with NAND support. but they could not choose eMMC or NOR instead of NAND due to price and development issue.

I could not find any NAND related issue regarding AM6442 and Processor SDK till now. Could you please double confirm whether NAND support is possible without Silicon or SDK issues.

Many Thanks.

Best Regards, 

Jack Cha

Technical Sales Engineer

EP and Radar Applications

Arrow Electronics Korea

jack.cha@arrow.com

82-10-4150-7677

  • 0
    TI__Mastermind 30110 points

    Hi Jack,

    The AM6442 supports NAND boot with the following configuration.

    AM64x ROM only supports boot from only ONFI 1.0 compatible 8 bit parallel NAND memory less than 2Gbytes
    in size connected to GPMC CS0 with the following geometries:
    • 2Kbyte page and spare area of at least 64 bytes or
    • 4Kbyte page size and spare area of at least 128 bytes.

    Refer to 4.3.14 GPMC NAND Boot Device Configuration in the TRM (https://www.ti.com/lit/ug/spruim2a/spruim2a.pdf)

    The NAND must not have internal ECC - the bootloader expects to read ECC (BCH8) from the spare area. It always boots from CS0.

    Regards,
    Mark

  • 0 in reply to Mark M
    Mastermind 9075 points

    Thanks a lot for your quick response.

  • 0 in reply to Mark M
    Mastermind 9075 points

    Hi Mark

    Could you please clarify how to  connect GPMC pins with 8-bit NAND memory? i.g. GPMC_AD[0:7].

    Additionally it would be appreciate if you give me the recommended NAND memory device as SDK' supported device list. Thx.

  • 0 in reply to Jack
    Mastermind 9075 points

    For instance, Micron' MT29F2G08ABAGAH4  seems support ONFI1.0.  should I connect btw GPMC[0:7] <---> NAND I/O [0:7] ? or GPMC[8:15] <---> NAND I/O[0:7].

    Hope an guidance document available which describe NAND interface and supported memory device among major supplier.

    I will ask my customer to survey proper devices by themselves. Thx 

  • 0 in reply to Jack
    TI__Mastermind 30110 points

    Hi Jack,

    For 8-bit NAND connect GPMC[0:7] <---> NAND I/O [0:7].

    MT29F2G08ABAGAH4 looks good.

    We use MT29F1G08ABAEAWP-IT:E and MT29F4G08ABAFAWP-IT:F for checkout.

    The TRM is the best document to refer to. The next release will have updated bootloader section.

    Regards,
    Mark