Datasheet

T
T
T
r
r
r
a
a
a
n
n
n
s
s
s
c
c
c
e
e
e
n
n
n
d
d
d
I
I
I
n
n
n
d
d
d
u
u
u
s
s
s
t
t
t
r
r
r
i
i
i
a
a
a
l
l
l
C
C
C
F
F
F
C
C
C
a
a
a
r
r
r
d
d
d
T
T
T
S
S
S
1
1
1
2
2
2
8
8
8
M
M
M
~
~
~
1
1
1
6
6
6
G
G
G
C
C
C
F
F
F
2
2
2
0
0
0
0
0
0
I
I
I
Transcend Information Inc.
V1.2
76
Word
Address
Default
Value
Total
Bytes
Data Field Type Information
67 0078h 2 Minimum PIO transfer cycle time without flow control
68 0078h 2 Minimum PIO transfer cycle time with IORDY flow control
69-79 0000h 20 Reserved
80-81 0000h 4 Reserved – CF cards do not return an ATA version
82-84 702Bh 2 Command sets supported
83 500Ch 2 Command sets supported
84 4000h 2 Command sets supported
85-87 XXXXh 6 Features/command sets enabled
88 001Fh 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 140 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