Western Digital Blue WD20SPZX Technical Reference Manual page 46

WORD FIELD DESCRIPTION
Commands and features sets sup-
ported
Bit 15: Shall be cleared to 0
Bit 14: Shall be set to 1
Bit 13: If set, Flush Cache EXT com-
mand supported
Bit 12: If set, mandatory Flush Cache
command supported
Bit 11: Obsolete
Bit 10: If set, 48-bit Address Feature
Set supported
Bit 9-8: Obsolete
83
Bit 7: Reserved
Bit 6: If set, Set Features subcom-
mand required to spin-up after
power-up
Bit 5: If set, PUIS feature set sup-
ported
Bit 4: Obsolete
Bit 3: If set, APM feature set sup-
ported
Bit 2: If set, CFA feature set sup-
ported
Bit 1: Obsolete
Bit 0: If set, Download Microcode
command supported
Commands and feature sets sup-
ported
Bit 15: Shall be cleared to zero
Bit 14: Shall be set to one
Bit 13: If set, Idle Immediate with
Unload Feature supported
Bit 12-11: Obsolete
Bit 10-9: Obsolete
Bit 8: If set, World wide name sup-
ported
Bit 7: Obsolete
84
Bit 6: If set, Write DMA FUA EXT and
Write Multiple FUA EXT commands
supported
Bit 5: If set, GPL feature set sup-
ported
Bit 4: If set, Streaming Feature Set
supported
Bit 3: Obsolete
Bit 2: Reserved
Bit 1: If set, SMART Self-Test sup-
ported
Bit 0: If set, SMART Error Logging
supported
WESTERN DIGITAL CONFIDENTIAL
ATA Command Set
F=fixed
V=variable
X= not defined
- 46 -
Drive Program
Power-on Default Value
F
F
F
F
X
F
X
7469h
F
F
X
F
F
X
F
F
F
F
X
X
F
X
6123h
F
F
F
X
F
F