Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
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12.41 Sleep (E6h/99h)
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.
A software reset or a hardware reset is the only way to recover from Sleep Mode.
Command Block Output Registers Command Block Input Registers
Register 7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0
Data - - - - - - - - Data - - - - - - - -
Feature - - - - - - - - Error see below
Sector Count - - - - - - - - Sector Count - - - - - - - -
Sector Number - - - - - - - - Sector Number - - - - - - - -
Cylinder Low - - - - - - - - Cylinder Low - - - - - - - -
Cylinder High - - - - - - - - Cylinder High - - - - - - - -
Device/Head 1 - 1 D - - - - Device/Head - - - - - - - -
Command 1 1 1 0 0 1 1 0 Status see below
Error Register Status Register
7654321 0 76543 21 0
CRC UNC 0 IDN 0 ABT T0N AMN BSY RDY DF DSC DRQ COR IDX ERR
00000V0 0 0V0V- 0- V
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