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postdiv

Ganz
Intellectual 770 points

In the PLL documnet  SPRUGV2F it said the PREDIV is not implemented. How about the POSTDIV? There is a postdiv register in the document, but which one it is in the PLL and PLL Controller Bolck Diagram (page 1-1, Figure 1-1)? Maybe OUTPUT DIVIDE?

 

GanZ

  • 0
    TI__Mastermind 43660 points

    Hello GanZ,

    Sorry for the misinterpretation.

    As mentioned in the revision history of SPRUGV2F, the POSTDIV register has been removed in revision B itself. There is a documentation bug as the POSTDIV register content is not removed yet. Hopefully it will be corrected in the next revision.

    The OUTPUT DIVIDE is a part of SECCTL register (Bits 19:22).

    Regards,

    Senthil

  • 0 in reply to Senthilkumar Srinivasan
    Intellectual 770 points

    Senthill,

    Thanks for the Clatification.

    I have a following up question. In map file used by romparse utility there are three sw_pll parameters

    sw_pll_prediv, sw_pll_premult, sw_pll_postdiv. Is sw_pll_premult correspondind to PLLM? How about  sw_pll_prediv and sw_pll_postdiv? Which one is used to set PLLD?

     

    GanZ

     

  • 0 in reply to Ganz
    TI__Mastermind 43660 points

    Hello GanZ,

    I believe the sw_pll_parameter is for PLLM and sw_pll_prediv parameter is for PLLD. The sw_pll_postdiv is not applicable for Keystone1 devices as their PLL controller doesn't have POSTDIV block.

    Regards,

    Senthil