Silicon Image SSD-D16G(I)-3600 Manual Do Utilizador
ATA C
OMMAND
B
LOCK
AND
S
ET
D
ESCRIPTION
SSD-D
XXX
(I)-3600 D
ATA
S
HEET
S
ILICON
S
YSTEMS
P
ROPRIETARY
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All unauthorized use and/or reproduction is prohibited.
3600D-04DSR
P
AGE
44
F
EBRUARY
2, 2009
Read Sector — 20h, 21h
The Read Sector command allows the host to read sectors 1 to 256 as
specified in the Sector Count register. If the sector count is set to 0h, all 256
sectors of data are made available. When the command code is issued and
the first sector of data has been transferred to the buffer, the DRQ bit is set.
The Read Sector command is terminated by writing the cylinder, head, and
sector number of the last sector read in the task file. On error, the read
operation is aborted in the errant sector.
The Read Sector command allows the host to read sectors 1 to 256 as
specified in the Sector Count register. If the sector count is set to 0h, all 256
sectors of data are made available. When the command code is issued and
the first sector of data has been transferred to the buffer, the DRQ bit is set.
The Read Sector command is terminated by writing the cylinder, head, and
sector number of the last sector read in the task file. On error, the read
operation is aborted in the errant sector.
Table 43: Read Sector — 20h, 21h
Register
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Feature
X
Sector Count
Sector Count
Sector Number
Sector Number (LBA7-0)
Cylinder Low
Cylinder Low (LBA15-8)
Cylinder High
Cylinder High (LBA23-16)
Drive Head
1
LBA
1
Drive
Head Number (LBA27-24)
Command
20h or 21h