20.5.3 Clocks

The DMAC bus clock (CLK_DMAC_APB) must be configured and enabled in the Power Manager before using the DMAC.

An AHB clock (CLK_DMAC_AHB) is required to clock the DMAC. This clock must be configured and enabled in the power manager before using the DMAC, and the default state of CLK_DMAC_AHB can be found in Peripheral Clock Masking.

This bus clock (CLK_DMAC_APB) is always synchronous to the module clock (CLK_DMAC_AHB), but can be divided by a prescaler and may run even when the module clock is turned off.