Samsung 3.5" hard disk drives Benutzerhandbuch
DISK DRIVE OPERATION
SpinPoint V40 Product Manual
84
6.6.1.1
PIO Read Command
a)
b)
e)
e)
Setup
Issue
Read
Transfer
Read
Transfer
Command
Status
Data
=====
Status
Data
BSY=0
BSY=1 BSY=0
BSY=1
BSY=0
BSY=1
DRDY=1
DRQ=1
DRQ=0
DRQ=1
DRQ=0
Assert
Negate
Assert
Negate
INTRQ INTRQ
INTRQ INTRQ
If Error Status is presented, the drive is prepared to transfer data, and it is at the host's discretion that the data
is transferred.
6.6.1.2
PIO Read Aborted Command
a)
b)
e)
Setup
Issue
Read
Command
Status
BSY=0
BSY=1 BSY=0
DRDY=1
DRQ=1
DRQ=0
Assert
Negate
INTRQ INTRQ
Although DRQ=1, there is no data to be transferred under this condition.
6.6.2 PIO Data Out Commands
This class includes:
•
Download Microcode (92h)
•
Format (50h)
•
SMART Write Log Sector
•
Write Buffer (E8h)
•
Write Long (32h)
•
Write Multiple (C5h)
•
Write Sector(s) (30h)