SWCU192 November 2021 CC1312R7 , CC1352P7 , CC2652P7 , CC2652R7
20.2.1 Operational Modes
The AUX domain requests to operate in active, low-power, or power-down modes (see Figure 20-2).
Figure 20-2 AUX State DiagramEach operational mode is characterized by:
- System power supply request
- Sensor Controller operational clock rate (SCE clock rate)
- Sensor Controller module availability
- System response to an active AUX wake-up event
The system does not change the AUX operational mode request. As shown in Figure 20-2, the system overrides the request as long as the AUX wake-up event is active. The AUX wakeup applies only to the Sensor Controller (for a description, see Section 20.1).
Table 20-1 summarizes the properties for each operational mode.
| Operational Mode | Active | Low-Power | Power-Down | |||
|---|---|---|---|---|---|---|
| AUX SCE Clock Source | AON_PMCTL:AUXSCECLK.SRC | SCLK_MF | AON_PMCTL:AUXSCECLK.PDSRC | |||
| SCE Clock Rate | 24 MHz | 2 MHz | 2 MHz | 32.768 kHz | NO_CLOCK | |
| AUX Bus Clock Rate | MCU Inactive | 24 MHz | 24 MHz | 2 MHz | 32.768 kHz | NO_CLOCK |
| MCU Active | 24 MHz | 24 MHz | 24 MHz | 24 MHz | 24 MHz | |
| Wake-Up System Response | None | None | Active or Low-Power | |||
| Power Supply Request | DCDC or GLDO | µLDO | µLDO | |||
| SCE Module Availability | All | Do not use ADC, ISRC, TDC, or OSCCTL. | ||||
Follow the steps described in AUX_SYSIF:OPMODEREQ to request an operational mode (see Section 20.8.9). For AUX wakeup, see Section 20.1. An Active operational mode request prevents the system from entering standby.
An Active operational mode request prevents the system from entering standby or shutdown because the power controller requests a high-frequency clock source.