60.4.3.1.2 If AES_MR.LOD = 1
This mode is optimized to process AES CBC-MAC operating mode.
The DATRDY flag is cleared when at least one AES_IDATAR is written (see the following figure). No additional AES_ODATAR reads are necessary between consecutive encryptions/decryptions.
![](GUID-62A39736-3642-4879-BCC7-A4CA8547E829-low.png)