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Original question:

AM625: Power up sequencing

AM625: AM6254

Mitul Prajapati
Prodigy 70 points
Part Number: AM625


We are using TPS6521903RHB PMIC for the processor AM6254ATCGGAALW and there are some power nets which are mentioned more than once in the power up sequence. please help us to understand more about it.

  • 0
    TI__Mastermind 23151 points

    Hi,

    Thanks for reaching out. The notes at the bottom of that table explains the supply consolidations that are allowed. For example, when VDD_CORE runs at 0.85V, the same PMIC rail is used to supply both CORE domains (VDD_CORE and VDDR_CORE) so they ramp together. Some of the other signals in the "B" and "C" waveforms are dual voltage IO (3.3V/1.8V) so their sequence requirements will depend on the voltage used.  

    Let us know about your specific question and we will be happy to answer. 

    Thanks,

    Brenda