Table 148 Sleep Command (E6H/99H); Sleep (E6H/99H) - Hitachi HDS723020BLA642 Specifications

11.42 Sleep (E6h/99h)

Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 0 0

Table 148 Sleep Command (E6h/99h)

This command causes the device to enter Sleep Mode.
The device is spun down and the interface becomes inactive. If the device is already spun down, the spin down
sequence is not executed.
The only way to recover from Sleep Mode is with a software reset or a hardware reset.
7 6 5 4 3 2 1
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
1 - 1 D - - -
1 1 1 0 0 1 1
4 3 2 1
IDN 0 ABT T0N AMN
0 0 V 0
Hitachi hard disk drive specifications
Command Block Input Registers
0 Register
- Data
- Error
- Sector Count
- Sector Number
- Cylinder Low
- Cylinder High
- Device/Head
0 Status
Status Register
0 7 6 5
BSY RDY DF
0 0 V 0
212
7 6 5 4 3 2 1
- - - - - - -
...See Below...
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
...See Below...
4 3 2 1
DSC DRQ COR IDX ERR
V - 0 -
0
-
-
-
-
-
-
0
V