C5515 Die ID Register Content

Jon Halland

Hi TI tech

What is the content of the DIEID0:7 registers ? In sprufx5d only a few fields has a specific description:

DIEID3[15:12] = DesignRev

DIEID7[14:1] = Checksum

All other register fields are either Reserved or named DIEID. sprufx5d quote: " ...but can be used by users as a 128-bit unique ID for each device"

Does this mean that each individual chip has its own unique number coded into the various DIEID fields ?

If so, is the unique number in form of an incremental serial number or a large random number ?

In which registers/fields are the "unique ID coded".

0 Jon Halland over 12 years ago

Hello !!!

Is there nobody from TI that have a description of what was put in these registers ???

Cheers

0 Steve Tsang over 12 years ago in reply to Jon Halland

Sorry about that.

The 128-bit is formed by the specific die's wafer coordinates, wafer lot #, wafer fab code and other chip manufacturing related information.

It would be a large random # to the users. Because of the randomness, users can use it as an unique ID for that device.

Regards.

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