Hitachi IC25N040ATCS04-0 Specifications - Page 136
Note 1. See
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Word Content Description 00 01 02 03 04 05 06 07 08 09 10-19 20 21 22 23-26 27-46 47 045AH drive bit assignments classification 15(=0) 1=ATAPI device, 0=ATA device * 14(=0) 1=format speed tolerance gap required * 13(=0) 1=track offset option available * 12(=0) 1=data strobe offset option available * 11(=0) 1=rotational speed tolerance > 0.5% * 10(=1) 1=disk transfer rate > 10 Mbps * 9(=0) 1=disk transfer rate > 5 Mbps but
![](/manual_guide/products/hitachi-ic25n040atcs040-specifications-54d9fdf/136.png)
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.
8010H
47
Model number in ASCII
(Note 1)
27-46
Micro code version in ASCII
XXXX
23-26
Number of ECC bytes as currently selected via the set
feature command
*
00XXH
22
Buffer size in 512-byte increments
*
(
Note 1)
21
Controller type:
0003: dual ported, multiple sector buffer with look-
ahead read
*
0003H
20
Serial number in ASCII (0 = not specified)
XXXX
10-19
Reserved
*
0000H
09
Reserved
0
08
Reserved
0
07
Number of sectors per track in default translate mode
003FH
06
Reserved
*
0
05
Reserved
*
0
04
Number of heads in default translate mode
(Note 1)
03
SET FEATURES subcommand is not required to spin-up and
IDENTIFY DEVICE response is complete
C837H
02
Number of cylinders in default translate mode
(Note 1)
01
Reserved
0(=0)
1=hard sectored
1(=1)
*
1=identify data incomplete
2(=0)
1=not MFM encoded
3(=1)
*
1=head switch time > 15
ยต
s
4(=1)
*
1=spindle motor control option
implemented
5(=0)
*
1=fixed drive
6(=1)
1=removable cartridge drive
7(=0)
1=disk transfer rate <= 5 Mbps
8(=0)
*
1=disk transfer rate > 5 Mbps but <= 10 Mbps
9(=0)
*
1=disk transfer rate > 10 Mbps
10(=1)
*
1=rotational speed tolerance > 0.5%
11(=0)
*
1=data strobe offset option available
12(=0)
*
1=track offset option available
13(=0)
*
1=format speed tolerance gap required
14(=0)
*
1=ATAPI device, 0=ATA device
15(=0)
bit assignments
drive
classification
045AH
00
Description
Content
Word
* in Content field indicates the use of those parameters that are vendor
specific.
Note 1. See Figure 93.
Figure 86. Identify device information. (Part 1 of 7)
Hitachi Travelstar 60GH & 40GN hard disk drive specifications
123