SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
All POK modules are in MCU domain regardless of the domain of the voltage they monitor.
In this family of devices, the Power-on-reset 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 modules are responsible for accurately detecting the voltage levels. Each module is trimmed to account for process and temperature variations. The trim values are provided by eFuse chains enabled by a POR/Reset Generator (PRG) module.
Two types of POK modules are implemented in this family of devices - POK and POK_SA. See Table 5-826 about the type of a POK and the voltage it is monitoring. More information about the two types of POKs is given further in this section.
POK Module Instance Name | PRG Index | POK Index1 | Voltage Monitored | Module Type | OV/UV2 | Description |
---|---|---|---|---|---|---|
IPOK_VDDA_PMIC_IN | PRG0 | 3 | VMON_VSYS | POK_SA | UV | Voltage Monitor for PMIC_IN |
IPOK_VDD_CORE_OV | PRG0 | 4 | VDD_CORE | POK_CORE | OV | Voltage Monitor for VDD_CORE |
IPOK_VDDS_DDRIO | PRG1 | 6 | VDDR_DDR | POK_CORE | UV/OV | Voltage Monitors for DDRIO |
IPOK_VDDR_CORE | PRG1 | 5 | VDDR_CORE | POK_CORE | UV/OV | Voltage Monitors for VDDR_CORE |
IPOK_VDDSHV_MCU_3P3 | PRG1 | 4 | VMON_3P3_MCU | POK_3P3 | UV/OV | Voltage Monitors for 3.3-V I/O supply in MCU |
IPOK_VDDS_MCU_1P8 | PRG1 | 3 | VMON_1P8_MCU | POK_1P8 | UV/OV | Voltage Monitors for 1.8-V I/O supply in MCU |
IPOK_VDDS_CAP_MCU | PRG1 | 2 | CAP_VDDS_MCU | POK_1P8 | UV/OV | Voltage Monitors for MCU mid-rail |
IPOK_VDDS_MAIN_1P8 | PRG1 | 1 | VMON_1P8_SOC | POK_1P8 | UV/OV | Voltage Monitors for 1.8-V I/O/PLL supply |
IPOK_VDDSHV_MAIN_3P3 | PRG1 | 0 | VMON_3P3_SOC | POK_3P3 | UV/OV | Voltage Monitors for 3.3-V I/O/PLL supply |
Figure 5-400 and Figure 5-401 represent the block diagrams of the two POK types.
Vref for both POK and POK_SA types in Figure 5-400 and Figure 5-401 is supplied from POR module, see Power on Reset (POR) Module.