[−][src]Module lpc55s6x_pac::hashcrypt::ctrl

Control register to enable and operate Hash and Crypto

Structs

DMA_I_W	Write proxy for field `DMA_I`
DMA_O_W	Write proxy for field `DMA_O`
HASHSWPB_W	Write proxy for field `HASHSWPB`
MODE_W	Write proxy for field `Mode`
NEW_HASH_W	Write proxy for field `New_Hash`

DMA_I_A	Written with 1 to use DMA to fill INDATA. If Hash, will request from DMA for 16 words and then will process the Hash. If Cryptographic, it will load as many words as needed, including key if not already loaded. It will then request again. Normal model is that the DMA interrupts the processor when its length expires. Note that if the processor will write the key and optionally IV, it should not enable this until it has done so. Otherwise, the DMA will be expected to load those for the 1st block (when needed).
DMA_O_A	Written to 1 to use DMA to drain the digest/output. If both DMA_I and DMA_O are set, the DMA has to know to switch direction and the locations. This can be used for crypto uses.
MODE_A	The operational mode to use, or 0 if none. Note that the CONFIG register will indicate if specific modes beyond SHA1 and SHA2-256 are available.
NEW_HASH_AW	Written with 1 when starting a new Hash/Crypto. It self clears. Note that the WAITING Status bit will clear for a cycle during the initialization from New=1.