49.4.2 Clocks
The ICM bus clocks (CLK_ICM_AHB and CLK_ICM_APB) can be enabled and disabled in the Main Clock module (MCLK) by writing the respective bit in the mask registers (MCLK.AHBMASK.ICM and MCLK.APBCMASK.ICM).
The default states of CLK_ICM_AHB and CLK_ICM_APB are given by the reset values of the respective mask registers.