Silicon Image SSD-P16G(I)-3100 Data Sheet
ATA R
EGISTERS
SSD-P
XXX
(I)-3100 D
ATA
S
HEET
S
ILICON
S
YSTEMS
P
ROPRIETARY
This document and the information contained within it is confidential and proprietary to SiliconSystems, Inc.
All unauthorized use and/or reproduction is prohibited.
3100P-06DSR
P
AGE
54
F
EBRUARY
2, 2009
S
TATUS
R
EGISTER
The Status register provides the device’s current status to the host. The status
register is an 8-bit read-only register. When the contents of the register are
read by the host, the IREQ# bit is cleared.
register is an 8-bit read-only register. When the contents of the register are
read by the host, the IREQ# bit is cleared.
Table 41: Status Register
Operation
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Read/Write
BSY
DRDY
DWF
DSC
DRQ CORR
IDX
ERR
Default Value
0
0
0
0
0
0
0
0
Bit(s)
Description
7
Busy (BSY).
Set when the drive is busy and unable to process any
new ATA commands.
6
Data Ready (DRDY).
Set when the device is ready to accept ATA
commands from the host.
5
Drive Write Fault (DWF).
Always set to 0.
4
Drive Seek Complete (DSC).
Set when the drive heads have been
positioned over a specific track.
3
Data Request (DRQ).
Set when a device is ready to transfer a word
or byte of data to or from the host and the device.
2
Corrected Data (CORR).
Always set to 0.
1
Index (IDX).
Always set to 0.
0
Error (ERR).
Set when an error occurs during the previous ATA
command.