SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
Table 5-1314 shows POK modules allocation within device domains.
Module Instance | Domain | ||
WKUP | MCU | MAIN | |
IPOK_VDD_CORE | ✓ | - | - |
IPOK_VDDR_CORE | ✓ | - | - |
IPOK_VDD_CPU | ✓ | - | - |
IPOK_VMON_EXT | ✓ | - | - |
IPOK_VMON_EXT_MAIN_1P8 | ✓ | - | - |
IPOK_VMON_EXT_MAIN_3P3 | ✓ | - | - |
IPOK_VDD_MCU_OV | ✓ | - | - |
IPOK_VDDR_MCU | ✓ | - | - |
IPOK_VDDSHV_WKUP_GEN | ✓ | - | - |
IPOK_CAP_VDDS_MCU_GEN | ✓ | - | - |
IPOK_VDDA_PMIC_IN | ✓ | - | - |
All POK modules are located in the WKUP domain regardless of the voltage domain they monitor.
In this family of devices, the Power-on-reset (POR) module is used only for voltage monitoring, as three additional POK modules. For more information about POK functionality in POR module - voltage being monitored and type (under voltage or over voltage), see Power on Reset (POR) Module.
POK Type | Monitored Voltage Values |
POK | 3.3 V, 1.8 V, or core voltages |
POK_SA | 0.45 V (allows for external resistor divider for a wide range of scaled voltages) |
Figure 5-645 and Figure 5-646 are block diagrams of the two POK types.
Vref for both POK and POK_SA types in Figure 5-645 and Figure 5-646 is supplied from POR module.
See Table 5-1316 for the type of a POK and the voltage it is monitoring.
Module Instance | Connected to PRG | Type | Voltage Monitored | TAP | OV / UV |
---|---|---|---|---|---|
POR_POKHV | PRG_POR | POK | VDDA_POR_WKUP | VDD_MON1P8 | UV |
POR_POKLVA | PRG_POR | POK | VDDA_POR_WKUP | VDD_MON1P8 | OV |
POR_POKLVB | PRG_POR | POK | VDD_MCU | VDD_MON | UV |
IPOK_VDD_CORE | PRG_PP_MAIN | POK | VDD_CORE | VDD_MON | OV + UV |
IPOK_VDDR_CORE | PRG_PP_MAIN | POK | VDDAR_CORE | VDD_MON | OV + UV |
IPOK_VDD_MCU_OV | PRG_POR | POK | VDD_MCU | VDD_MON | OV |
IPOK_VDDR_MCU | PRG_PP_MCU | POK | VDDAR_MCU | VDD_MON | OV + UV |
IPOK_VDDSHV_WKUP_GEN | PRG_PP_MCU | POK | VDDSHV0_MCU* | VDD_MON3P3 | OV + UV |
IPOK_VMON_CAP_VDDS _MCU_GEN | PRG_PP_MCU | POK | CAP_VDDS0_MCU | VDD_MON1P8 | OV + UV |
IPOK_VDDA_PMIC_IN | PRG_POR | POK_SA | VMON1_ER_VSYS | n/a | |
IPOK_VDD_CPU | PRG_PP_MAIN | POK | VMON2_IR_VCPU | VDD_MON | OV + UV |
IPOK_VMON_EXT | PRG_PP_MAIN | POK | VMON3_IR_VEXT1P8 | VDD_MON1P8 | OV + UV |
IPOK_VMON_EXT_1P8 | PRG_PP_MAIN | POK | VMON4_IR_VEXT1P8 | VDD_MON1P8 | OV + UV |
IPOK_VMON_EXT_3P3 | PRG_PP_MAIN | POK | VMON5_IR_VEXT3P3 | VDD_MON3P3 | OV + UV |