SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
After stream decoding and primitive removal by the link layer, the validated FIS Dwords are extracted from the RxFIFO buffer by the transport layer DMA, and the original SATA storage drive FIS structures are recovered to a dedicated host system memory space. The DMA stores the received FISs into different memory areas based on FIS type. The unknown FIS reception is legal to HBA, as long as the length of the unknown FIS does not overrun the 64-byte size limit of the FIS descriptors. For details on received FISs memory area organization, see the AHCI and SATA standard specifications.