SATA

• ATA
  • ATA不支援error detection and reporting capablility
  • 在UltraDMA transfer時只有在傳送時提供CRC error checking
• SATA
  • SATA bus includes a Cyclic Redundancy(CRC).
  • 當發生CRC error，此時stata protocol會要求重送資料
  • This retry mechanism is support for all packet types except data packets.

• 以上參考來源：SATA Storage Technology.pdf

SATA Storage Technology

傳送packet(also call a FIS)，將會收到status FIS：Frame Information Structures

FIS Transmission and SATA Layers

• PC TO HD DATA
  • PC：PC (PCI Bus)
  • PC：DMA/Sata Registers
  • PC：Command Layer -> Transport Layer -> Link Layer -> Physical Layer (Parallel to Serial)
  • HD：Physical Layer(Serial to Parallel) -> Link Layer -> Transport Layer -> Command Layer
  • HD：SATA Register
• HBA (Host Bus Adapter)

• FIS Transfers
  • Application Layer(HBA)
    • Host software issues command to the HBA by performing a series of IO write
  • Transport Layer(HBA)
    • Transport layer has several responsibilities associated
      • Create a compilant FIS
      • Notify Link layer of FIS pending delivery
      • Notify link of flow control requirements during transmission
      • 

SATA Device Connector

參考來源

SATA Storage Technology