Hitachi 7K80 - Deskstar - Hard Drive - Page 6

Deskstar 7K80 Hard Disk Drive Specification
2
6.6.2 Read DRQ interval time .................................................................39
6.7 Multi-word DMA timings........................................................................41
6.8 Ultra DMA timings..................................................................................42
6.8.1 Initiating Read DMA ......................................................................42
6.8.2 Host Pausing Read DMA................................................................43
6.8.3 Host Terminating Read DMA.........................................................44
6.8.4 Device Terminating Read DMA.....................................................45
6.8.5 Initiating Write DMA .....................................................................46
6.8.6 Device Pausing Write DMA...........................................................47
6.8.7 Device Terminating Write DMA....................................................48
6.8.8 Host Terminating Write DMA........................................................49
6.9 Addressing of registers ............................................................................50
6.9.1 Cabling............................................................................................50
7.0 Specification .......................................................................................................53
7.1 Jumper settings ........................................................................................53
7.1.1 Jumper pin location.........................................................................53
7.1.2 Jumper pin identification ................................................................53
7.1.3 Jumper pin assignment....................................................................54
7.1.4 Jumper positions .............................................................................54
7.2 Environment.............................................................................................58
7.2.1 Temperature and humidity..............................................................58
7.2.2 Corrosion test..................................................................................59
7.3 DC power requirements...........................................................................59
7.3.1 Input voltage ...................................................................................59
7.3.2 Power supply current (typical)........................................................60
7.3.3 Power supply generated ripple at drive power connector...............60
7.4 Reliability.................................................................................................61
7.4.1 Data integrity ..................................................................................61
7.4.2 Cable noise interference..................................................................61
7.4.3 Start/stop cycles..............................................................................61
7.4.4 Preventive maintenance..................................................................61
7.4.5 Data reliability ................................................................................61
7.4.6 Required power-off sequence .........................................................61
7.5 Mechanical specifications........................................................................62
7.5.1 Physical dimensions and weight.....................................................62
7.5.2 Mounting hole locations .................................................................63
7.5.3 Connector locations ........................................................................63
7.5.4 Drive mounting...............................................................................64
7.5.5 Heads unload and actuator lock......................................................64
7.6 Vibration and shock.................................................................................65
7.6.1 Operating vibration.........................................................................65
7.6.2 Nonoperating vibration...................................................................65
7.6.3 Operating shock..............................................................................66
7.6.4 Nonoperating shock........................................................................66
7.6.5 Nonoperating rotational shock........................................................67