The CCM peripheral is able to encrypt/decrypt data synchronously to data being transmitted or received by RADIO.
In order for CCM to run synchronously with the radio, the data rate setting in register MODE needs to match the radio data rate. The settings in this register apply whenever either the KSGEN or CRYPT tasks are triggered.
The data rate setting of register MODE can also be overridden on-the-fly during an ongoing encrypt/decrypt operation by the contents of register RATEOVERRIDE. The data rate setting in this register applies whenever the RATEOVERRIDE task is triggered. This feature can be useful in cases where the radio data rate is changed during an ongoing packet transaction.