Hitachi HDS725050KLA360 - 13 Time-Out Values

Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
237
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 101.
The abbreviations "ns", "
µs", "ms," and "sec" mean nanoseconds, microseconds, milliseconds, and sec-
onds, respectively.
If the host detects a time-out while waiting for a response from the device, we recommend that the host
system execute a Soft reset and then retry the command.
.
Table 175: 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 Register
RST=1
Status Register BSY=1 400 ns
Device Ready After Soft-
ware Reset
Device Control Register
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 Reg-
ister
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
Device Busy After Data
Transfer Out
256th Write From Data
Register
Status Register BSY=1 5 µs
Interrupt For Data Trans-
fer 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 Com-
mand
Device Busy After Com-
mand Code Out
OUT to Command Reg-
ister
Status Register BSY=1 400 ns