Western Digital Blue WD20SPZX Technical Reference Manual page 53

WORD FIELD DESCRIPTION
Reserved for the CompactFlash™
160-167
Association
Device Nominal Form Factor
Bit 15-4: Reserved
168
Bit 3-0: Device Nominal Form Factor
Data Set Management Command
Bit 15-1: Reserved
169
Bit 0: if set, the Trim bit in the Data
Set Management command sup-
ported
170-173 Additional Product Identifier
174-175 Reserved
176-205 Current Media Serial number
SCT Command Transport
Bit 15-12: Vendor Specific
Bit 11-8: Reserved
Bit 7: Reserved for Serial ATA
Bit 6: Reserved
Bit 5: If set, SCT Data tables com-
mand supported
206
Bit 4: If set, SCT Features Control
command supported
Bit 3: If set, SCT Error Recovery Con-
trol command supported
Bit 2: If set, SCT Write Same com-
mand supported
Bit 1: If set, Obsolete
Bit 0: If set, SCT Command Transport
supported
207-208 Reserved
Alignment of logical blocks within a
physical block
Bit 15: Shall be cleared to zero
209
Bit 14: Shall be set to one
Bits 13-0: Logical sector offset within
the first physical sector where the
first logical sector is placed.
Write-Read-Verify Sector Count
210-211
Mode 3
Write-Read-Verify Sector Count
212-213
Mode 2
214-216 Obsolete
217 Nominal media rotation rate
218 Reserved
219 Obsolete
Bit 15-8: Reserved
220
Bit 7-0: Write-Read-Verify feature set
current mode
221 Reserved
WESTERN DIGITAL CONFIDENTIAL
ATA Command Set
F=fixed
V=variable
X= not defined
F
F
F
V
X
F
F
F
F
F
X
F
F
F
F
V
F
X
F
X
V
- 53 -
Drive Program
Power-on Default Value
0000h
0003h
0001h
0000h
0000h
0000h
3035h
0000h
4000h
0000h
0000h
0000h
1518h
0000h
0000h
0000h
0000h