Data Sheet

General Feature Set
FLUSH CACHE (E7h)
This command is used by the host to request the device to flush the write cache. If there is data in the write cache, that
data shall be written to the media. The BSY bit shall remain set to one until all data has been successfully written or an
error occurs.
IDENTIFY DEVICE (ECh)
This commands read out 512 Bytes of drive parameter information. Parameter Information consists of the
arrangement and value as shown in the following table. This command enables the host to receive the Identify Drive
Information from the device.
Identify Device Information Default Value
Word Address
Default value
(Hex)
Total Bytes
Data Field Type Information
0
0x044A
2
General configuration
1
0xXXXX
2
Default number of cylinders
2
0x0000
2
Reserved
3
0x00XX
2
Default number of heads
4-5
0x02400000
4
Obsolete
6
0xXXXX
2
Default number of sectors per track
7 - 8
0xXXXXXXXX
4
Number of sectors per card
(Word 7 = MSW, Word 8 = LSW)
9
0x0000
2
Obsolete
10 - 19
0xXXXX
20
Serial number in ASCII (Right justified)
20
0x0002
2
Obsolete
21
0x0002
2
Obsolete
22
0x0000
2
Obsolete
23 - 26
0xXXXX
8
Firmware revision in ASCII.
Big Endian Byte Order in Word
27 - 46
0xXXXX
40
Model number in ASCII (Left justified).
Big Endian Byte Order in Word.
47
0x8001
2
Maximum number of sectors on Read/Write Multiple command
48
0x0000
2
Reserved
49
0x0F00
2
Capabilities
50
0x0000
2
Reserved
51
0x0200
2
PIO data transfer cycle timing mode
52
0x0000
2
Obsolete
53
0x0007
2
Field validity
54
0xXXXX
2
Current numbers of cylinders
55
0xXXXX
2
Current numbers of heads
56
0xXXXX
2
Current sectors per track
57 - 58
0xXXXX
4
Current capacity in sectors (LBAs)
(Word57 = LSW , Word58 = MSW)
59
0x0000
2
Multiple sector setting
60 - 61
0xXXXX
4
Total number of sectors addressable in LBA Mode