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11.46.6.2
Go To Power Condition subcommand
Com m and Block Output Registers
Register
7
6
Data
-
-
Feature
0
1
Sector Count
V
V
Sector Number
-
-
Cylinder Low
-
-
Cylinder High
-
-
Device/Head
1
-
Command
1
1
Error Register
7
6
5
4
CRC UNC
0
IDN
0
0
0
0
Table 214 Go To Power Condition subcommand
On successful completion of this EPC subcommand, the device:
1) stops all enabled EPC timers;
2) enters the selected EPC power condition after command completion of the SET FEATURES command
without having to wait for any timers to expire; and
3) the device remains in the selected power condition until the device processes the next command or reset.
Output Parameters To The Device
Sector Count
Power Condition ID (See Table 74)
Sector Number bit
7-4
3-0
Error Output
If the Power condition ID is FFh, a reserved value, or is not supported, or if Extended Power Condition feature set is
disable, then the device returns command aborted .
5
4
3
2
1
0
-
-
-
-
-
-
0
0
1
0
1
0
V
V
V
V
V
V
-
-
0
0
0
1
-
-
-
-
-
-
-
-
-
-
-
-
1
D
-
-
-
-
1
0
1
1
1
1
3
2
1
0
0
ABT
T0N AMN
0
V
0
0
Description
Reserved
1h Go To Power Condition subcommand (See Table 73)
Western Digital Hard Disk Drive OEM Specification
Com m and Block Input Registers
Register
7
6
Data
-
-
Error
Sector Count
-
-
Sector Number
-
-
Cylinder Low
-
-
Cylinder High
-
-
Device/Head
-
-
Status
Status Register
7
6
5
4
BSY
RDY
DF
DSC DRQ COR
0
V
0
-
246
5
4
3
2
1
0
-
-
-
-
-
-
...See Below ...
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
...See Below ...
3
2
1
0
IDX
ERR
-
0
-
V
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