30.5.3 Clocks

The TC bus clock (CLK_TCx_APB, where x represents the specific TC instance number) can be enabled and disabled in the Power Manager, and the default state of CLK_TCx_APB can be found in the Peripheral Clock Masking section in “PM – Power Manager”.

The different TC instances are paired, even and odd, starting from TC3, and use the same generic clock, GCLK_TCx. This means that the TC instances in a TC pair cannot be set up to use different GCLK_TCx clocks.

This generic clock is asynchronous to the user interface clock (CLK_TCx_APB). Due to this asynchronicity, accessing certain registers will require synchronization between the clock domains. Refer to Synchronization for further details.