Table 5.3 Command code and parameters (2 of 2)
Command name  | 
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  | Command code (Bit)  | 
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  | Parameters used  | 
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7  | 
  | 6  | 
  | 5  | 4  | 3  | 2  | 
  | 1  | 0  | FR  | 
  | SC  | SN  | CY  | DH  | ||
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STANDBY IMMEDIATE | 1  | 
  | 0  | 
  | 0  | 1  | 0  | 1  | 
  | 0  | 0  | N  | 
  | N  | N  | N  | 
  | D  | 
  | 1  | 
  | 1  | 
  | 1  | 0  | 0  | 0  | 
  | 0  | 0  | 
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SLEEP | 1  | 
  | 0  | 
  | 0  | 1  | 1  | 0  | 
  | 0  | 1  | N  | 
  | N  | N  | N  | 
  | D  | 
  | 1  | 
  | 1  | 
  | 1  | 0  | 0  | 1  | 
  | 1  | 0  | 
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CHECK POWER MODE | 1  | 
  | 0  | 
  | 0  | 1  | 1  | 0  | 
  | 0  | 0  | N  | 
  | N  | N  | N  | 
  | D  | 
  | 1  | 
  | 1  | 
  | 1  | 0  | 0  | 1  | 
  | 0  | 1  | 
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SMART | 1  | 
  | 0  | 
  | 1  | 1  | 0  | 0  | 
  | 0  | 0  | Y  | 
  | Y  | Y  | Y  | 
  | D  | 
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Notes:  | 
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FR : Features Register  | 
  | CY: Cylinder Registers  | 
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SC : Sector Count Register  | 
  | DH : Drive/Head Register  | 
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SN : Sector Number Register  | 
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R:Retry at error
1 = Without retry 0 = with retry
Y: Necessary to set parameters
Y*: Necessary to set parameters under the LBA mode.
N:Necessary to set parameters (The parameter is ignored if it is set.) N*: May set parameters
D: The device parameter is valid, and the head parameter is ignored.
D*: The command is addressed to the master device, but both the master device and the slave device execute it.
X: Do not care
5 - 15  |