SWRU439M October 2015 – April 2022
The Sensor Controller is in active mode when running task code and in standby mode otherwise. The Sensor Controller firmware framework, which is integrated in the generated driver, autonomously handles the transitions into and out of standby mode.
All peripheral modules are available in active mode, unless they are used by the System CPU. A small number of peripherals can be used in standby mode to trigger wakeup of the Sensor Controller.
Table 2-2 lists the Sensor Controller/AUX domain clock source and frequency for the different modes of operation.
| Operation State | Frequency and Source | System CPU and MCU Domain Active | System CPU and MCU Domain Standby |
|---|---|---|---|
| Active | Sensor Controller clock | 24 MHz (SCLK_HF / 2) | 24 MHz (SCLK_HF / 2) |
| AUX bus clock | 24 MHz (SCLK_HF / 2) | 24 MHz (SCLK_HF / 2) | |
| Standby with event trigger | Sensor Controller clock | 24 MHz (SCLK_HF / 2) | 32 kHz (SCLK_LF) |
| AUX bus clock | 24 MHz (SCLK_HF / 2) | 32 kHz (SCLK_LF) | |
| Standby without event trigger | Sensor Controller clock | 24 MHz (SCLK_HF / 2) | No clock |
| AUX bus clock | 24 MHz (SCLK_HF / 2) | No clock |