Hitachi Deskstar 7K250, Технические характеристики

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Deskstar 7K250 Hard Disk Drive Specification
221
13.0 Time-out values
The timing of BSY and DRQ in Status Register are shown in the table below.
Command category is referred to in section 11.0, "Command protocol" on page 99.
The abbreviations "ns", "
µ
s
", "ms," and "sec" mean nanoseconds, microseconds, milliseconds, and sec-
onds, respectively.
Table 141: Time-out values
INTERVAL START STOP TIME-OUT
Power On Device Busy After
Power On Power On Status Register BSY=1 400 ns
Device Ready After
Power On Power On Status Register BSY=1
and RDY=1 31 sec
Software
Reset Device Busy After Soft-
ware Reset Device Control Regis-
ter RST=1 Status Register BSY=1 400 ns
Device Ready After
Software Reset Device Control Regis-
ter RST=0 After RST=1 Status Register BSY=0
and RDY=1 31 sec
Hard Reset Device Busy After Hard
Reset Bus RESET Signal
Asserted Status Register BSY=1 400 ns
Device Ready After
Hard Reset Bus RESET Signal
Asserted Status Register BSY=0
and RDY=1 31 sec
Data In Com-
mand Device Busy After Com-
mand Code Out OUT To Command
Register Status Register BSY=1 400 ns
Interrupt, DRQ For Data
Transfer In Status Register BSY=1 Status Register BSY=0
and DRQ=1, Interrupt 30 sec
Device Busy After Data
Transfer In 256th Read From Data
Register Status Register BSY=1 10
µ
s
Data Out
Command Device Busy After Com-
mand Code Out OUT to Command Reg-
ister Status Register BSY=1 400 ns
Device Busy After Data
Transfer Out 256th Write From Data
Register Status Register BSY=1 5
µ
s
Interrupt For Data
Transfer Out Status Register BSY=1 Status Register BSY=0
and RDY=1 Interrupt 30 sec
Non-Data
Command Device Busy After Com-
mand Code Out OUT to Command Reg-
ister Status Register BSY=1 400 ns
Interrupt For Command
Complete Status Register BSY=1 Interrupt 30 sec
DMA Data
Transfer
Command Device Busy After Com-
mand Code Out OUT to Command Reg-
ister Status Register BSY=1 400 ns