• Ready for review

    • Fuse Map

    Owned by Anu Selvaraj (Deactivated)
    Last updated: 08. Dec 2022
    1 min read

    Following information will be fused to the i.MX6 processor during production:

    Boot-device

    Boot-device

    Fuse (0x021bc…)

    Value

    Description

    0x450 (BOOT_CFG)

    0x3840

    Boot from internal uSD-Card (default)

     

    0x2840

    Boot from external SD-Card (on request)

    0x460

    0x10

    Boot mode configuration is taken from fuse

    MAC-address

    MAC-address

    Fuse (0x021bc…)

    Description

    0x620 (MAC_ADDR[31:00])

    MAC-address, four lower bytes

    0x630 (MAC_ADDR[47:32])

    MAC-address, two upper bytes

    Board-Revision

    Board-Revision

    Fuse (0x021bc…)

    Value

    Description

    0x660 (GP1[7..0])

    1

    V1R1

     

    2

    V1R2

     

    3

    V1R3

    Feature

    Feature

    Fuse (0x021bc…)

    Value

    Description

    0x660 (GP1[31..30])

    00

    Undefined. RAM may or may not support low-voltage-mode. Its safe to use 1.5V

     

    10

    RAM only supports DDR3 mode: 1.5V

     

    11

    RAM supports LVDDR3 mode: 1.35V

    0x660 (GP1[29..28])

    00

    Undefined. RAM width unknown

     

    01

    16bit RAM-Width

     

    10

    32bit RAM-Width

     

    11

    64bit RAM-Width

    Example

    To read the fuses in WinCE use the reg command.
    i.e.

    reg 21bc660 [021bc660] 0xe0000003

    Shows that the module is set to LVDDR3, 32bit RAM-Width, Board-Revision V1R3.