Western Digital Purple PR1000M, Technical Reference Manual

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PR1000M
ATA C
OMMAND
S
ET
2679-800020-A03 RELEASED 5/8/17 (WD CONFIDENTIAL) 31
4.3 Identify Device (ECh)
The Identify Device command transfers 512 bytes of data that specify the drive’s
parameters. Table 4-7 lists the parameters read by the host
Table 4-7. Identify Device Command
WORD FIELD DESCRIPTION VALUE
0 General Configuration
427A
H
1 Obsolete
0
2 Specific Configuration
XXXX
3 Obsolete
0
4-5 Retired
0
6 Obsolete
0
7-8 Reserved for assignment by the CompactFlash™
Association
0
9 Retired
0
10-19 Serial Number (ATA String)
WD
NNNNNNNN
20-21 Retired
0
22 Obsolete
0
23-26 Firmware Revision (ATA String) NNNN
27-46 Model Numbers (ATA String)
“WDC WD30PURX-
NNN-
NNN
”
“WDC WD20PURX-
NNN-
NNN
”
“WDC WD30PURZ-NNN-
NNN”
“WDC WD20PURZ-NNN-
NNN
“WDC WD30EVRX-NNN-
NNN”
“WDC WD20EVRX-NNN-
NNN
47 READ/WRITE MULTIPLE support
Bit 15-8: 80h
Bit 7-0: 00h: Reserved
01h-FFh = Maximum number of logical sectors that shall be
transferred per DRQ data block on READ/WRITE
MULTIPLE commands
8010
H
48 Trusted Computing feature set options
Bit 15: Shall be cleared to zero
Bit 14: Shall be set to one
Bit 13-1: Reserved for the Trusted Computing Group
Bit 0: If set, Trusted Computing feature set is supported
0
49 Capabilities
Bit 15-14: Reserved for the IDENTIFY PACKET DEVICE
command.
Bit 13: If set, Standby timer values as specified in this
standard are supported.
0 = Standby timer values shall be managed by the device
Bit 12: Reserved for the IDENTIFY PACKET DEVICE
command
Bit 11: If set, IORDY supported
Bit 10: If set, IORDY may be disabled
Bit 9: If set, LBA supported
Bit 8: If set, DMA supported
Bit 7-2: Reserved
Bit 1: Current Long Physical Alignment Setting 2F00
H