SATA

[Gen1|Gen2] x [i(< 1 meter)|m(< 2 meters)|x(> 2 meter)]

xSATA: external, multilane
eSATA: external, single-lane, < 2 meters

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AHCI Power management

HBA PM states (of PCI PM states)

• D0: Working
  
• D1: N/A
• D2: N/A
• D3: Very deep sleep
  

SATA device PM state

• D0: working
  
• D1: receipt IDLE IMMEDIATE(0xe1)
  
• D2: receipt STANDBY(0xe2) or STANDBY IMMEDIATE(0xe0)
• D3: receipt SLEEP(0xe6)

*exit latency from D1, D2, D3 is in seconds

PHY layer (interface) PM states

• PHY Ready
• Partial
  
  • exit latency <>
• Slumber
  
  • exit latency <>