processors.wiki.ti.com/.../AM437x_Schematic_Checklist
a) RTC section is inaccurate. Figures do not point to the appropriate power up sequencing on the AM4376 datasheet. These are for the AM335x which does not mention Simplified power sequencing. Please provide valid refrences
b) RTC timer functionality but no RTC-only mode, be used with Simplified Power Sequencing?
| Pin | Function | RTC-only mode | RTC timer functionality but no RTC-only mode |
RTC feature disabled |
| VDDS_RTC | 1.8 V power supply | Always on RTC 1.8 V power supply | any AM437x 1.8 V power supply3) | any AM437x 1.8 V power supply3) |
| CAP_VDD_RTC | RTC core voltage input/LDO output1) | 1 uF decoupling capacitor to VSS | VDD_CORE4) | VDD_CORE4) |
| RTC_KALDO_ENn | Internal LDO enable input | VSS | VDDS_RTC | VDDS_RTC |
| RTC_PWRONRSTn | RTC power on reset input | 1.8 V RTC power on reset2) | 1.8 V PWRONRSTn 5) | VSS |
| PMIC_POWER_EN | PMIC power enable output | PMIC power enable input | No Connect | No Connect |
| EXT_WAKEUP | External wakeup input | 1.8 V wakeup event signal | VSS | VSS |
| Datasheet power up sequencing | Figure 4-1, 2, 3 | Figure 4-4 | Figure 4-5 |
|
