SWCU194 March 2023 CC1314R10 , CC1354P10 , CC1354R10 , CC2674P10 , CC2674R10
Figure 15-1 shows a general overview of the IOC.
The IOC module consists of two main submodules:
Microcontroller unit IOC (MCU IOC) configures the peripheral ports to the user-defined pins.
Always-on IOC (AON IOC) module handles JTAG, 32 kHz clock, AON peripherals, and AUX Domain signals.
The always-on peripherals (RTC, Battery Monitor and internal temperature sensor) are clocked from the 32 kHz Low Frequency Clock, SCLK_LF (see Section 7.5 for more details). This allows the device to operate at very low power levels while still maintaining active operation of these peripheral functions. When configured correctly, the AON IOC ensures that output levels of all I/Os remain unchanged when the AUX power domain is powered down.