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UCD3138: LLC source code question, what does DCDC PAGED & DCDC NONPAGED matrix use for?

HAN LEE
Expert 1515 points
Part Number: UCD3138

Hi everyone,

As title ,i know the DCDC_PAGED & DCDC_NONPAGED are related the device gui pmbus communication , but i'd like to know more detail about the DCDC_PAGED & DCDC_NONPAGED?

i cannot find any information form documents.

If i revise the "back to rom" cmd from D9 to BD , i should revise the DCDC_PAGED or DCDC_NONPAGED matrix ?

Many thanks.

  • 0
    TI__Expert 4040 points

    Hello,

    If you are planning on overriding 0xD9 with 0xBD please take a look at the section in userguide section 7.11.  You can also look at 6.4.2.  You would not need to modify the bitmask.  Just set the override in the GUI as outlined in 7.11.  Then whenever 0xD9 is to be used by the GUI it will be intercepted by the override you specified and call 0xBD instead.  Hope this helps. 

  • 0
    TI__Genius 17090 points
    The Paged is for DC/DC supplies with multiple power supply rails supported by a single chip. They describe which PMBus commands are supported independently by each rail, requiring the page value to be set to tell which rail the command should reach.

    The non-paged is for commands which apply for all

    The matrixes are really used for supply type commands, and are mostly ignored for commands like return to ROM mode - and read paged and non-paged matrices.