The Identify Device command requests the device to transfer configuration information to the host. The
device will transfer a sector to the host containing the information described in the following figure.
In the following table the bullet symbol (•) means the word is for vendor specific use.
Capabilities, bit assignments:
15-14 (=0) Reserved
13 Standby timer
(=1) values as specified in ATA standard are
supported
(=0) values are vendor specific
12 (=0) Reserved
11 (=1) IORDY supported
10 (=1) IORDY can be disabled
9 (=1) Reserved
8 (=0) Reserved
7–0 (=0) Reserved
y
xF00H
49
Reserved
0000H
48
per interrupt on Read and Write Multiple commands
15–8 80h
7–0 Maximum number of sectors that can be transferred
8010H
47
Model number in ASCII
XXXX
27-46
Microcode version in ASCII
XXXX
23-26
Number of ECC bytes
(Vendor unique length selected via set feature cmd)
y
0028H
22
Buffer size in 512-byte increments
y
XXXXH
21
Controller type:
0003: dual ported, multiple sector buffer with look-
ahead read
y
0003H
20
Serial number in ASCII (0 = not specified)
XXXX
10-19
Reserved
y
0000H
09
Number of bytes in sync field
y
0000H
08
Number of bytes of sector gap
y
0000H
07
Number of sectors per track in default translate mode
003FH
06
Reserved
y
0
05
Reserved
y
0
04
Number of heads in default translate mode
00xxH
03
Specific Configuration
37C8H: Need Set Feature for spin-up after power-up
Identify Device is incomplete
37C8H
02
Number of cylinders in default translate mode
xxxxH
01
Drive classification, bit assignments:
15(=0): 1=ATAPI device, 0=ATA device
14– 8 : retired
7(=0): 1=removable cartridge drive
6(=1): 1=fixed drive
5– 3 : retired
2(=0): Response incomplete
1 : retired
0(=0): Reserved
045AH
or
045EH
00
Description
Content
Word
Figure 84. Identify Device Information (1 of 6)
Deskstar 60 GXP Hard disk drive specification
112
Содержание IC35L020 - Deskstar 20 GB Hard Drive
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