Hitachi HTS541680J9SA00 Specifications - Page 132
Sleep E6h/99h
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Travelstar 5K160 (SATA) Hard Disk Drive Specification 14.39 Sleep (E6h/99h) Command Block Output Registers Register 76543210 Data -------- Feature -------- Sector Count -------- LBA Low -------- LBA Mid -------- LBA High -------- Device -------- Command 11100110 Command Block Input Registers Register 76543210 Data -------- Error ...See Below... Sector Count -------- LBA Low -------- LBA Mid -------- LBA High -------- Device -------- Status ...See Below... Error Register 7 6 5 4 3 2 1 0 CRC UNC 0 IDN 0 ABT T0N AM N 000 0 0V0 0 Figure 79 Sleep Command (E6h/99h) Status Register 7 6543 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0V0V - 0 0V 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. Then the device is spun down, and the interface becomes inactive. The only way to recover from Sleep Mode is with a software reset a COMRESET. If the device is already spun down, the spin down sequence is not executed. 132/167