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What is the difference between standard and extended registers?

Mike Fitz
Prodigy 10 points
Other Parts Discussed in Thread: BQ28Z610

Hi community,

I was reading in section 9.5.2 about sealed vs unsealed  battery packs in the TRM for the bq28z610 gauge, and I was curious what registers I would be able to read data from depending if the gauge was sealed or unsealed.

Thank you,

Mike

  • 0
    TI__Expert 4450 points
    Hi Mike,

    I could tell you the difference between seal mode,unseal mode and full access:

    seal mode: you could not read/write data memory, it seems that your gauge has been locked.
    unsealed mode: you could read/write data memory, but you could not boot ROM.
    full access mode: you could read/write data memory, and you could boot ROM.

    You could go into every mode through send commands to Altmanufactureraccess().
    If you still have some unclear place, please tell me.
    Thank you.

    Best regards,
    Sammi Shang
  • 0
    TI__Expert 4450 points
    Hi Mike,

    I want to give a more detailed information of your question:

    1. Sealed mode: standard register is accessible, extended MAC commands functions and data flash are not accessible;
    2.Unsealed mode: the device has extend access to the standard and extended registers and data flash space;In unsealed mode, all data, standard and extended registers and DF have read/write access.
    3.Full access: the same with unsealed mode, but may plus one, that in full access mode, the command to go to boot ROM can be sent.

    You could see the detailed information in page 48 of below file:
    www.ti.com/.../sluua65b.pdf

    Best regards,
    Sammi Shang