Datasheet

Travelstar 80GN Hard Disk Drive Specification
193
14.0 Time-out values
The timing of BSY and DRQ in Status Register are shown in the table below.
The abbreviations "ns", "µs", "ms" and "sec" mean nanoseconds, microseconds, milliseconds and seconds,
respectively.
Table 131: 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=0
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 µs
Data Out Com-
mand
Device Busy After Com-
mand Code Out
OUT to Command Reg-
ister
Status Register BSY=1 400 ns
Data Request For Data
Transfer Out
Status Register BSY=1 Status Register BSY=0
and DRQ=1
700 µs
(Note 3)
Device Busy After Data
Transfer Out
256th Write From Data
Register
Status Register BSY=1 5 µs
Interrupt For Data
Transfer Out
Status Register BSY=1 Status Register BSY=0
and RDY=1 Interrupt
30 sec
(Note 1)
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
(Note 2)
DMA Data
Transfer Com-
mand
Device Busy After Com-
mand Code Out
OUT to Command Reg-
ister
Status Register BSY=1 400 ns