User Manual

SanDisk CompactFlash Card OEM Product Manual Identify Device–ECH
02/09, Rev. 1.0 ii © 2007 - 2009 SanDisk Corporation. SanDisk Confidential, subject to all applicable non-disclosure agreements.
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5 Identify Device–ECH
The following table defines the specifics of the Identify Data returned by the CompactFlash card. Specifics of
each word can be found in the CF+ & CF SPECIFICATION REV. 4.1.
Table 5-8 Identify Device Information
Word
Address Default Value Total Bytes Data Field Type Information
848Ah 2 General configuration bit-significant
information
0XXX 2 General configuration – Bit Significant with
ATA-4 definitions.
0
044Ah 2 Fixed Drive
1 XXXXh 2 Default number of cylinders
2 0000h 2 Reserved
3 00XXh 2 Default number of heads
4 0000h 2 Obsolete
5 0000h 2 Obsolete
6 XXXXh 2 Default number of sectors per track
7-8 XXXXh 4 Number of sectors per card (Word 7 = MSW,
Word 8 = LSW)
9 XXXXh 2 Obsolete
10-19 aaaa 20 Serial number in ASCII (right justified)
20 0000h 2 Obsolete
21 0000h 2 Obsolete
22 0004h 2 Number of ECC bytes passed on Read/Write
Long Commands
23-26 aaaa 8 Firmware revision in ASCII (Rev M.ms) set by
code Big Endian Byte Order in Word
27-46 aaaa 40 Model number in ASCII (left justified) Big
Endian Byte Order in Word
47 000Xh 2 Maximum of 1 sector on Read/Write Multiple
command
48 0000h 2 Reserved
49 XX00h 2
Capabilities
50 0000h 2 Reserved