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The Essential Guide to Serial ATA and SATA Express
book

The Essential Guide to Serial ATA and SATA Express

by David A. Deming
October 2014
Intermediate to advanced content levelIntermediate to advanced
496 pages
15h 38m
English
Auerbach Publications
Content preview from The Essential Guide to Serial ATA and SATA Express
SATA Technical Overview 51
2.5.4 Device Register
The Device Register (previously Device/Head Register) (see Tables 2.17 and 2.18) has two bits that may
be used. You will have to look at each command usage model to determine if these bits need to be set.
Table 2.17 Device Register (ATA-8)
Register 76543210
Error
SENSE KEY (0h-Fh) obsolete ABRT EOM
ILI
CMDTO
Sector Count
LBA Low
LBA Mid
LBA High
Device obsolete LBA obsolete DEV Reserved
Status
BSY DRDY DF/SE DWE DRQ AE 1 CC/ERR
Note: LBA—Used to select LBA or CHS addressing – always 1 in ATA-8.
DEV—Selects master or slave device – ATA emulation mode only.
2.6 CHS and LBA Addressing
2.6.1 CHS Address
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Publisher Resources

ISBN: 9781482243314