Timings; Figure 1. Time-Out Values - Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications

12.0 Timings

The timing of BSY and DRQ in Status Register is shown in the figure below.
Function Interval
Power On Device Busy After
Power On
Device Ready
After Power On
Software Device Busy After
Reset Software Reset
Device Ready
After Software
Reset
Hard Device Busy After
Reset Hard Reset
Device Ready
After Hard Reset
Data In Device Busy After
Command Command Code Out
Interrupt, DRQ
For Data Transfer
In
Device Busy After
Data Transfer In
Data Out Device Busy After
Command Command Code Out
Device Busy After
Data Transfer Out
Interrupt For
Data Transfer Out
Non-Data Device Busy After
Command Command Code Out
Interrupt For
Command Complete
DMA Data
Device Busy After
Transfer
Command Code Out
Command
Figure 183. Time-out values
Command category is referred to in Section 10.0 , "Command Protocol" on page 95.
The abbreviations "ns", "us", "ms," and "sec" mean nanoseconds, microseconds, milliseconds, and
seconds, 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.
Start
Power On
Power On
Device Control
Register RST=1
Device Control
Register RST=0
After RST=1
Bus RESET Signal
Asserted
Bus RESET Signal
Asserted
OUT To Command
Register
Status Register
BSY=1
256th Read From
Data Register
OUT to Command
Register
256th Write From
Data Register
Status Register
BSY=1
OUT to Command
Register
Status Register
BSY=1
OUT to Command
Register
Deskstar 180GXP hard disk drive specifications
229
Stop
Status Register
BSY=1
Status Register
BSY=1 and RDY=1
Status Register
BSY=1
Status Register
BSY=0 and RDY=1
Status Register
BSY=1
Status Register
BSY=0 and RDY=1
Status Register
BSY=1
Status Register
BSY=0 & DRQ=1,
Interrupt
Status Register
BSY=1
Status Register
BSY=1
Status Register
BSY=1
Status Register
BSY=0 and RDY=1
Interrupt
Status Register
BSY=1
Interrupt
Status Register
BSY=1
Time-out
400 ns
31 sec
400 ns
31 sec
400 ns
31 sec
400 ns
30 sec
10 us
400 ns
5 us
30 sec
400 ns
30 sec
400 ns