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Original question:

UCD90320U: LGPO delay timing

UCD90320U: RESEQUENCE implementation

B.D.
Prodigy 60 points
Part Number: UCD90320U
Other Parts Discussed in Thread: UCD90320

Tool/software:

Hello,

UCD90320 user's guide (SLVUAW9C) contains conflicting information on the RESEQUENCE register. Chapter10.15 it shows that the command is not supported for UCD90320:

The overview of table 2 (PMBUS commands), shows that it is actually supported on UCD90320:

Can this be cleared out? 

Thanks,

B

  • +1
    TI__Guru 66230 points

    Hi

    Thank you for pointing this out. RESEQUENCE command is not supported by the UCD90320

    Regards

    Yihe

  • 0 in reply to yihe
    Prodigy 60 points

    Hi,

    I found other conflicting data in the datasheet:

    Table 2 shows that there is support for the security_bit_mask register:

    But 10.32 states that it is not supported. 

    If supported by the device, can you share us the details on this register?

    If not supported, can you explain what will exactly be password protected when we enable the password protection?

  • 0 in reply to B.D.
    TI__Guru 66230 points

    HI

    I made a typo in my previous response. RESEQUENCE command is not support by UCD90320.

    SECURITY_BIT_MASK is also not supported by the UCD90320. 

    when you have password protection, many write command is blocked until a passcode is written.

    The list of the command is in the user guide.

    Regards

    Yihe