SWCU192 November 2021 CC1312R7 , CC1352P7 , CC2652P7 , CC2652R7
The Key Store Read Area register selects the key store RAM area from where the key must be read that is used for an AES operation. The operation starts directly after writing this register. When the operation is finished, the status of the key store read operation is available in the IRQSTAT Interrupt Status register. Key Store Read Error asserts when a RAM area is selected that does not contain a valid written key.
For more details, see Section 13.9.1.