IBM IC35L020 - Deskstar 20 GB Hard Drive - Figure 84. Identify Device Information (1 of 6)

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
xF00H49
Reserved0000H
48
per interrupt on Read and Write Multiple commands
15–8 80h
7–0 Maximum number of sectors that can be transferred
8010H47
Model number in ASCIIXXXX27-46
Microcode version in ASCIIXXXX23-26
Number of ECC bytes
(Vendor unique length selected via set feature cmd)
y
0028H22
Buffer size in 512-byte increments
y
XXXXH21
Controller type:
0003: dual ported, multiple sector buffer with look-
ahead read
y
0003H20
Serial number in ASCII (0 = not specified)XXXX10-19
Reserved
y
0000H09
Number of bytes in sync field
y
0000H08
Number of bytes of sector gap
y
0000H07
Number of sectors per track in default translate mode003FH06
Reserved
y
005
Reserved
y
004
Number of heads in default translate mode00xxH03
Specific Configuration
37C8H: Need Set Feature for spin-up after power-up
Identify Device is incomplete
37C8H02
Number of cylinders in default translate modexxxxH01
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
DescriptionContentWord
Figure 84. Identify Device Information (1 of 6)
Deskstar 60 GXP Hard disk drive specification
112