SPRUJB3C March 2024 – November 2025 AM67 , AM67A , TDA4AEN-Q1 , TDA4VEN-Q1
The reference clock MCU_PLL0_REF_CLK for the PLL in MCU domain is chosen between the internal high-frequency (HF) oscillator with external crystal (HFOSC0) and 12.5-MHz free-running RC oscillator. The selection is made through MCU_CTRL_MMR_CFG0_MCU_PLL_CLKSEL[8] CLKLOSS_SWTCH_EN, see Table 6-40.
| MCU_CTRL_MMR_CFG0_MCU_PLL_CLKSEL(1)[8] CLKLOSS_SWTCH_EN | MCU_PLL0_REF_CLK |
|---|---|
| 0 (default) | HFOSC0_CLK |
| 1 | CLK_12M_RC if clock loss is
detected or HFOSC0_CLK if clock loss is not detected |