3.2 Sensitive Traces

Traces connecting to the following pins are sensitive to noise and must be isolated from signal traces/noise source with guard GND vias/GND polygon pour.

  • BUCK_PLL
  • BUCK_LPA, BUCK_BB, BUCK_CLDO
  • AVDD
  • EXTRA_48K
  • XO_P/XO_N
  • LPA_OUT
  • PMU_VDDIO, VPMU_VDDP
  • NMCLR
  • CLDO_O