IBM IC35L020 Hard Drive Specifications - Page 172
Sleep E6h/99h
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15.31 Sleep (E6h/99h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 0 0 1 1 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status see below Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 00000V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 V - 0 -V Figure 118. Sleep Command (E6h/99h) This command causes the device to enter the 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 the Sleep Mode is with a software reset or a hardware reset. Deskstar 60 GXP Hard disk drive specification 158