stm32 /stm32h7rs /STM32H7S /CRYP /CRYP_DOUTR

Data output A four-fold sequential read to this bitfield during the output phase results in retrieving a complete 16-byte block from the CRYP output FIFO. From the first to the fourth read, the corresponding data weights are [127:96], [95:64], [63:32], and [31:0]. Output FIFO can store up to two 16-byte blocks of plaintext (when decrypting) or ciphertext (when encrypting). When the output FIFO is empty a read returns an undefined value. Writes are ignored.