Hitachi HTS541680J9AT00 Specifications - Page 114

Travelstar 5K160 (PATA) Hard Disk Drive Specification 14.10 Idle Immediate (E1h/95h) Default Function Command Block Output Registers Register 76543210 Data -------- Feature -------- Sector Count -------- LBA Low -------- LBA Mid -------- LBA High -------- Device - - -D- - - - Command 11100001 Command Block Input Registers Register 76543210 Data -------- Error ...See Below... Sector Count -------- LBA Low -------- LBA Mid -------- LBA High -------- Device -------- Status ...See Below... Unload Feature Command Block Output Registers Register 76543210 Data -------- Feature 01000100 Sector Count 01000100 LBA Low 01001100 LBA Mid 01001110 LBA High 01010101 Device - - -D- - - - Command 11100001 Command Block Input Registers Register 76543210 Data -------- Error ...See Below... Sector Count -------- LBA Low 11000100 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 62 Idle Immediate Command (E1h/95h) Status Register 7 6543 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0V0V - 0 -V The Idle Immediate command causes the device to enter performance Idle mode. The device is spun up to operating speed. If the device is already spinning, the spin up sequence is not executed. During Idle mode the device is spinning and ready to respond to host commands immediately. The Idle Immediate command will not affect the auto power down timeout parameter. Unload Feature: The UNLOAD FEATURE of the IDLE IMMEDIATE command allows the host to immediately unload the heads. The device stops read look-ahead if it is in process. If the device is performing a write operation, the device suspends writing cached data onto the media as soon as possible. The data in the write cache is retained, and the device resumes writing the cached data onto the media after receiving a Software Reset, a Hardware Reset, or any new command except IDLE IMMEDIATE with UNLOAD FEATURE. 114/188