Datasheet

Word
Address
Default
Value
Total
Bytes
Data Field Type Information
69-79
0000h
20
Reserved
80-81
0000h
4
Reserved – CF cards do not return an ATA version
82
702Bh
2
Command sets supported 0
83
500Ch
2
Command sets supported 1
84
4000h
2
Command sets supported 2
85
0000h
2
Command sets enabled 0
86
0000h
2
Command sets enabled 1
87
0000h
2
Command sets enabled 2
88
003Fh
2
Ultra DMA Mode Supported and Selected
89
0001h
2
Time required for Security erase unit completion
90
0000h
2
Time required for Enhanced security erase unit completion
91
0000h
2
Current Advanced power management value
92
0000h
2
Master Password Revision Code
93
604Fh
6F00h
603Fh
2
- Hardware reset result (Master)
- Hardware reset result (Slave)
- Hardware reset result (Master w/ slave present)
94-127
0000h
68
Reserved
128
0001h
2
Security status
129-159
0000h
64
Vendor unique bytes
160
81F4h
2
Power requirement description
161
0000h
2
Reserved for assignment by the CFA
162
0000h
2
Key management schemes supported
163
0092h
2
CF Advanced True IDE Timing Mode Capability and Setting
164
0000h
2
CF Advanced PC Card I/O and Memory Timing Mode Capability
165-175
0000h
22
Reserved
176-255
0000h
160
Reserved
 Word 0: General Configuration
This field indicates the general characteristics of the device. When Word 0 of the Identify drive information
is 848Ah then the device is a CompactFlash Storage Card and complies with the CFA specification and
CFA command set. It is recommended that PCMCIA modes of operation report only the 848Ah value as
they are always intended as removable devices.
Bits 15-0: CF Standard Configuration Value
Word 0 is 848Ah. This is the recommended value of Word 0.
Some operating systems require Bit 6 of Word 0 to be set to 1 (Non-removable device) to use the card as
the root storage device. The Card must be the root storage device when a host completely replaces
conventional disk storage with a CompactFlash Card in True IDE mode. To support this requirement and
provide capability for any future removable media Cards, alternatehandling of Word 0 is permitted.
Bits 15-0: CF Preferred Alternate Configuration Values
044Ah: This is the alternate value of Word 0 turns on ATA device and turns off Removable Media and
Removable Device while preserving all Retired bits in the word.
0040h: This is the alternate value of Word 0 turns on ATA device and turns off Removable Media and
Removable Device while zeroing all Retired bits in the word