Forums › Reference, Evaluation, and Development Boards › C-SIP RED Platform, reset supervisor VCC
Hello,
On the C-SIP RED schematic, the reset supervisor is monitoring SYS_VDD1_3P3V. Is there some significance to that choice of power rails?
Thank you,
Scott
Scott,
SYS_VDD1_3P3V is directly powered by the SYS_VOUT output of the PMIC. SYS_VOUT is switched from all the inputs of the PMIC(AC, USB, BAT). SYS_VDD1_3P3V was chosen as it is closest to SYS_VOUT, which is also independent from the internal power rails of the PMIC.
Best,
Neeraj
Neeraj,
Thank you for the detailed explanation, very helpful.
Scott
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