Identify Device (Ech) - SanDisk CompactFlash Extreme III Product Manual

SanDisk CompactFlash Card OEM Product Manual
5.1.5 Identify Device–ECH
The Identify Drive command enables the host to receive parameter information from a
CompactFlash Memory Card. This command has the same protocol as the Read Sector(s)
command. The parameter words in the buffer have the arrangement and meanings defined in
Table 5-8. All reserved bits or words are "0".
Table 5-7
Command (7)
C/D/H (6)
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
Table 5-8 is the definition for each field in the Identify Device Information.
Table 5-8
Word
Address
0
1
2
3
4
5
6
7-8
9
10-19
20
21
22
23-26
27-46
47
48
49
50
© 2007 SanDisk Corporation
Identify Device
Bit 7 6
X X
Identify Device Information
Default Value Total Bytes
848Ah 2
XXXXh 2
0000h 2
XXXXh 2
0000h 2
0000h 2
XXXXh 2
XXXXh 4
0000h 2
aaaa 20
0000h 2
0000h 2
0004h 2
aaa 8
aaaa 40
000Xh 2
0000h 2
a 2
0X00h
0000h 2
5-5
ATA Command Description
5 4 3 2
ECH
X Drive X
X
X
X
X
X
Data Field Type Information
General configuration bit-significant
information
Default number of cylinders
Reserved
Default number of heads
Number of unformatted bytes per track
Number of unformatted bytes per sector
Default number of sectors per track
Number of sectors per card (Word 7 = MSW,
Word 8 = LSW)
Reserved
Serial number in ASCII (right justified)
Buffer type (dual ported)
Buffer size in 512 byte increments
Number of ECC bytes passed on Read/Write
Long Commands
Firmware revision in ASCII (Rev M.ms) set by
code Big Endian Byte Order in Word
Model number in ASCII (left justified) Big
Endian Byte Order in Word
Maximum No. of Sectors on Read/Write Multiple
command
Double-word not supported
Capabilities: DMA Supported (bit 8), LBA
supported (bit 9)
Reserved
1 0
Rev. 12.0, 02/07