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Table 5.3 Command code and parameters (2 of 2)
Command name
STANDBY IMMEDIATE
SLEEP
CHECK POWER MODE
SMART
FLUSH CACHE
Notes:
FR : Features Register
SC : Sector Count Register
SN : Sector Number Register
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
Command code (Bit)
7
6
5
4
3
2
1
0
0
1
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
1
1
0
0
1
1
0
0
1
1
0
1
1
1
0
0
1
1
0
1
1
0
0
1
1
1
0
0
1
CY: Cylinder Registers
DH : Drive/Head Register
C141-E045-02EN
Parameters used
1
0
FR SC SN CY DH
0
0
N
N
N
N
0
0
0
1
N
N
N
N
1
0
0
0
N
N
N
N
0
1
0
0
Y
Y
Y
Y
1
1
N
N
N
N
D
D
D
D
D
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