13.32 Sleep (E6h/99h)
see belowStatus1 1 1 0 0 1 1 0Command
- - - - - - - -Device/Head1 - 1 D - - - -Device/Head
- - - - - - - -Cylinder High- - - - - - - -Cylinder High
- - - - - - - -Cylinder Low- - - - - - - -Cylinder Low
- - - - - - - -Sector Number- - - - - - - -Sector Number
- - - - - - - -Sector Count- - - - - - - -Sector Count
see belowError- - - - - - - -Feature
- - - - - - - -Data- - - - - - - -Data
7 6 5 4 3 2 1 0Register7 6 5 4 3 2 1 0Register
Command Block Input RegistersCommand Block Output Registers
V-0-V0V000V00000
ERRIDXCORDRQDSCDFRDYBSYAMNT0NABT0IDN0UNCCRC
0123456701234567
Status RegisterError Register
Figure 115. Sleep command (E6h/99h)
This command is the only way to cause the device to enter Sleep Mode.
When this command is issued, the device confirms the completion of the cached write commands before it
asserts INTRQ. Then the device is spun down, and the interface becomes inactive. The only way to
recover from Sleep Mode is with a software reset or a hardware reset.
The use of hardware reset to recover from Sleep Mode may be incompatible with continued operation of
the host system.
If the device is already spun down, the spin down sequence is not executed.
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
168
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