Western Digital Purple PR1334M, Technical Reference Manual

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WD Purple PR1334M ATA Command Set
2679-800084-A04 RELEASED 5/3/17 (WD CONFIDENTIAL) 31
4.3 Identify Device (ECh)
The Identify Device command transfers 512 bytes of data that specify the drives
parameters. Table 11 lists the parameters read by the host
Table 11. Identify Device Command
WORD FIELD DESCRIPTION VALUE
0 General Configuration 427Ah
1 Obsolete 3FFFh
2 Specific Configuration XXXX
3 Obsolete 0010h
4-5 Retired 0
6 Obsolete 003Fh
7-8 Reserved for assignment by the CompactFlash™
Association
0
9 Retired 0
10-19 Serial Number (ATA String) WDnnnnnnnn
20-21 Retired 0
22 Obsolete 0
23-26 Firmware Revision (ATA String) nnnn
27-46 Model Numbers (ATA String) “WDC WD40PURX-nnnnnn”
“WDC WD40PURZ-nnnnnn”
“WDC WD40EVRX-nnnnnn”
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
8010h
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
4000h
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
2F00h
50 Capabilities
Bit 15: Shall be cleared to zero.
Bit 14: Shall be set to one.
Bit 13-2: Reserved.
Bit 1: Obsolete
Bit 0: Shall be set to one to indicate a device specific
Standby timer value minimum
4001h
51-52 Obsolete 0
53 Additional Words Valid
Bit 8-15: Free-fall Control Sensitivity
00h = Vendor’s recommended setting
01h-FFh = Sensitivity level. A larger number is a
more sensitive setting.
Bit 7-3: Reserved
Bit 2: If set, the fields reported in word 88 are valid
Bit 1: If set, the fields reported in words 70-64 are valid
Bit 0: Obsolete
0006h
54-58 Obsolete 0