Status Register; Table 24: Status Register - Silicon Systems SiliconDrive SSD-D16G(I)-3600 Datasheet

ATA R
EGISTERS
S R
TATUS 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.
Operation
Read/Write
Default Value
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.
This document and the information contained within it is confidential and proprietary to SiliconSystems, Inc.
3600D-04DSR

Table 24: Status Register

D D D
7 6
BSY DRDY DWF
0 0
S S
ILICON YSTEMS
All unauthorized use and/or reproduction is prohibited.
P 23
AGE
SSD-D
XXX
D D
5 4 3
DSC DRQ
0 0 0
P
ROPRIETARY
(I)-3600 D S
ATA HEET
D D D
2 1 0
CORR IDX ERR
0 0 0
F 2, 2009
EBRUARY