Hitachi 100GB 7200 RPM HTE721010G9SA00 Benutzerhandbuch

Travelstar E7K100 (Serial ATA) Hard Disk Drive Specification

187 

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 67.

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.

Power On and
COMRESET
Device Busy 
After Power 
On

Devince Ready After 
Power On

Power on and COMRE-
SET

The Device sets BSY 
(=0) and RDY (=1) to 
the Register and 
requests to send the 
Register FIS to the 
Host.

31 sec

Software 
Reset

Device Busy 

After Software Reset

 Device Control Regis-
ter
RST=1 and sends the 
Register FIS to the 
Device. 

The Host Adapter sets  
BSY(=1) to the Status 
Register.

400 ns

Device Ready After 
Software Reset

Device Control Register
RST=0 and sends a 
Register FIS to the 
Device.  After RST=1 
and sends a Register 
FIS to the Device. 

Status Register
BSY=0 and RDY=1 and 
requests to send a Reg-
ister FIS to the host.

31 sec

COMRESET

Device Ready

After COMRESET

COMRESET Signal

 Asserted

Status Register
BSY=0 and RDY=1 and 
sends a Register FIS to 
the Host.

31 sec

Data In Com-
mand

Device Busy 

After a register FIS to 
issue a Command.

Sets proper values in 
the registers and sends 
a Register FIS.

Status Register BSY=1

400 ns

PIO Setup FIS for data-
in transfer

Status Register BSY=1

Status Register. BSY=0 
and DRQ=1 and sends 
a PIO Setup FIS to the 
host. 

30 sec