SWCU194 March 2023 CC1314R10 , CC1354P10 , CC1354R10 , CC2674P10 , CC2674R10
For AES-CBC operations, the following configuration parameters are required:
The length field can have any value. If a data stream is finished and the next data stream uses the same key and control, it is allowed to write only the IV and length field with a new value. The length field may also be 0, for continued processing.
If the result IV must be read by the host, the CRYPTO:AESCTL.SAVE_CONTEXT bit must be set to 1 after processing the programmed number of bytes.