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ATA Command Description
Class
1
Translate Sector (Note 1)
1
Wear Level (Note 1)
2
Write Buffer
2
Write Long Sector
3
Write Multiple
3
Write Multiple w/o Erase (Note 2)
2
Write Sector(s)
2
Write Sector(s) w/o Erase (Note 2)
2
Write Verify Sector(s)
Note 1:
These commands are not standard PC Card ATA commands but provide additional functionality.
Note 2:
These commands are not standard PC Card ATA commands and these features are no longer supported with the
introduction of 256 Mbit Flash Technology. If one of these commands is issued, the sectors will be erased but there will
be no net gain in write performance when using the Write Without Erase command.
Definitions: FR = Features Register, SC = Sector Count Register, SN = Sector Number Register, CY = Cylinder Registers, DH =
Card/Drive/Head Register, LBA = Logical Block Address Mode Supported (see command descriptions for use).
Y—The register contains a valid parameter for this command. For the Drive/Head Register Y means both the
CompactFlash Card and head parameters are used; D—only the CompactFlash Card parameter is valid and not the head
parameter.
5.1.1. Check Power Mode—98H, E5H
Bit ->
Command (7)
C/D/H (6)
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
This command checks the power mode.
If the CompactFlash Memory Card is in, going to, or recovering from the sleep mode, the CompactFlash Card sets
BSY, sets the Sector Count Register to 00h, clears BSY and generates an interrupt.
If the CompactFlash Memory Card is in Idle mode, the CompactFlash Card sets BSY, sets the Sector Count Register
to FFh, clears BSY and generates an interrupt.
5-2
COMMAND
Code
87h
F5h
E8h
32h or 33h
C5h
CDh
30h or 31h
38h
3Ch
Table 5-2. Check Power Mode
7
6
5
X
®
CompactFlash
FR
SC
-
Y
-
-
-
-
-
-
-
Y
-
Y
-
Y
-
Y
-
Y
4
3
E5H or 98H
Drive
X
X
X
X
X
Memory Card Product Manual, Rev. 10.0 © 2002 SANDISK CORPORATION
SN
CY
DH
Y
Y
Y
-
-
Y
-
-
D
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
2
1
0
X
LBA
Y
-
-
Y
Y
Y
Y
Y
Y
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