SATA II v2.6 Host Controller

The SATA II Host Controller implements an AHCI/Emulation interface that interfaces with SATA PHY using the SAPIS interface on one side and to an application on the other side using the VCI interface. The emulation interface is used to be backward compatible with existing software and supports both PIO and DMA modes of operation. AHCI is an Advanced Host Controller Interface, which is a hardware mechanism that allows software to communicate with Serial ATA devices. It supports PIO, DMA, and FPDMA modes of operation and supports NCQ using FPDMA mode. It has aggressive power management capabilities