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5.3 Host Commands
C141-E050-02EN 5-15
Table 5.3 Command code and parameters (2 of 2)
Command code (Bit)
Parameters used
7 6 5 4 3 2 1 0 FR SC SN CY DH
IDLE IMMEDIATE
1
1
0
1
0
1
1
0
0
0
1
0
0
0
1
1
N N N N D
STANDBY
1
1
0
1
0
1
1
0
0
0
1
0
1
1
0
0
N Y N N D
STANDBY IMMEDIATE
1
1
0
1
0
1
1
0
0
0
1
0
0
0
0
0
N N N N D
SLEEP
1
1
0
1
0
1
1
0
1
0
0
1
0
1
1
0
N N N N D
CHECK POWER MODE
1
1
0
1
0
1
1
0
1
0
0
1
0
0
0
1
N N N N D
SMART 1 0 1 1 0 0 0 0 Y Y Y Y D
SECURITY DISABLE PASSWORD
1 1 1 1 0 1 1 0 N N N N D
SECURITY ERASE PREPARE
1 1 1 1 0 0 1 1 N N N N D
SECURITY ERASE UNIT
1 1 1 1 0 1 0 0 N N N N D
SECURITY FREEZE LOCK
1 1 1 1 0 1 0 1 N N N N D
SECURITY SET PASSWORD
1 1 1 1 0 0 0 1 N N N N D
SECURITY UNLOCK
1 1 1 1 0 0 1 0 N N N N D
FLUSH CACHE
1 1 1 0 0 1 1 1 N N N N D
Notes:
FR: Features Register
CY: Cylinder Registers
SC: Sector Count Register
DH: Drive/Head Register
SN: Sector Number Register
R: Retry at error
1 = Without retry
0 = with retry
Y: Necessary to set parameters
Command name