IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive - Figure 86. Identify Device Information (1 of 7)

Maximum number of sectors that can be transferred per
interrupt on Read and Write Multiple commands
15-8(=80h)
7-0 : Maximum number of sectors that can be
transferred per interrupt.
8010H47
Model number in ASCIINote 127-46
Micro code version in ASCIIXXXX23-26
Number of ECC bytes as currently selected via the set
feature command
*00XXH22
Buffer size in 512-byte increments*Note 121
Controller type:
0003: dual ported, multiple sector buffer with look-
ahead read
*0003H20
Serial number in ASCII (0 = not specified)XXXX10-19
Reserved*0000H09
Reserved008
Reserved007
Number of sectors per track in default translate mode003FH06
Reserved*005
Reserved*004
Number of heads in default translate modeNote 103
SET FEATURES subcommand is not required to spin-up and
IDENTIFY DEVICE response is complete
C837H02
Number of cylinders in default translate modeNote 101
Reserved0(=0)
1=hard sectored1(=1)*
1=identify data incomplete2(=0)
1=not MFM encoded3(=1)*
1=head switch time > 15 us4(=1)*
1=spindle motor control option implemented5(=0)*
1=fixed drive6(=1)
1=removable cartridge drive7(=0)
1=disk transfer rate <= 5 Mbps8(=0)*
1=disk transfer rate > 5 Mbps but <= 10 Mbps
9(=0)*
1=disk transfer rate > 10 Mbps10(=1)*
1=rotational speed tolerance > 0.5%11(=0)*
1=data strobe offset option available12(=0)*
1=track offset option available13(=0)*
1=format speed tolerance gap required14(=0)*
1=ATAPI device, 0=ATA device15(=0)
Bit assignments
Drive
classification
045AH00
DescriptionContentWord
Figure 86. Identify device information (1 of 7)
Note. The '
*
' mark in the 'Content' field indicates the use of those parameters that are vendor specific.
Note 1. See Figure 87 on page 133.
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
126