4
Hard Disk Drive OEM Specification
6.5.4 Heads unload and actuator lock ............................................................................................. 39
Vibration and shock ........................................................................................................................ 40
6.6.1 Operating vibration ................................................................................................................. 40
6.6.2 Nonoperating vibration ........................................................................................................... 41
6.6.3 Operating shock ....................................................................................................................... 41
6.6.4 Nonoperating shock ................................................................................................................. 41
6.6.5 Nonoperating Rotational shock .............................................................................................. 42
Acoustics .......................................................................................................................................... 43
Identification labels ........................................................................................................................ 43
Safety ............................................................................................................................................... 44
6.9.1 UL and CSA standard conformity .......................................................................................... 44
6.9.2 German Safety Mark ............................................................................................................... 44
6.9.3 Flammability ............................................................................................................................ 44
6.9.4 Safe handling ........................................................................................................................... 44
6.9.5 Substance restriction requirements ....................................................................................... 44
6.9.6 Secondary circuit protection ................................................................................................... 44
Electromagnetic compatibility ....................................................................................................... 45
6.10.1 CE Mark ................................................................................................................................... 45
6.10.2 RCM Mark ................................................................................................................................ 45
6.10.3 BSMI Mark............................................................................................................................... 45
6.10.4 KC Mark ................................................................................................................................... 45
Part 2. Interface specification .......................................................................................................................... 46
7 General ................................................................................................................................................................ 47
Introduction ..................................................................................................................................... 47
Terminology ..................................................................................................................................... 47
Deviations From Standard ............................................................................................................. 47
8 Registers.............................................................................................................................................................. 48
Alternate Status Register ............................................................................................................... 48
Command register........................................................................................................................... 48
Cylinder High Register ................................................................................................................... 48
Cylinder Low Register .................................................................................................................... 49
Device Control Register .................................................................................................................. 49
Device/Head Register ...................................................................................................................... 50
Error Register.................................................................................................................................. 50
Features Register ............................................................................................................................ 51
Sector Count Register ..................................................................................................................... 51
Sector Number Register ................................................................................................................. 51
Status Register ................................................................................................................................ 52
9 Normal and Error Output field descriptions ......................................................................................................... 53
Overview .......................................................................................................................................... 53
Status field ...................................................................................................................................... 53
9.2.1 Overview ................................................................................................................................... 53
9.2.2 ALIGNMENT ERROR bit ....................................................................................................... 54
9.2.3 BUSY bit ................................................................................................................................... 54
9.2.4 STREAM ERROR bit ............................................................................................................... 54
9.2.5 DATA REQUEST bit ................................................................................................................ 54
9.2.6 DEVICE FAULT bit ................................................................................................................. 54
9.2.7 DEVICE READY bit ................................................................................................................ 55
9.2.8 ERROR bit ................................................................................................................................ 55
9.2.9 SENSE DATA AVAILABLE bit ............................................................................................... 55
9.2.10 Transport Dependent bits and fields ...................................................................................... 55
ERROR field .................................................................................................................................... 56
9.3.1 Overview ................................................................................................................................... 56
9.3.2 ABORT bit ................................................................................................................................ 56