SDCFH-2048-388-J SanDisk, SDCFH-2048-388-J Datasheet - Page 53
![COMPACT FLASH 2GB ULTRA II](/photos/7/83/78342/mfg_sdcfh_series_sml.jpg)
SDCFH-2048-388-J
Manufacturer Part Number
SDCFH-2048-388-J
Description
COMPACT FLASH 2GB ULTRA II
Manufacturer
SanDisk
Datasheet
1.SDCFH-1024-388.pdf
(108 pages)
Specifications of SDCFH-2048-388-J
Memory Size
2GB
Memory Type
CompactFLASH
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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© 2007 SanDisk Corporation
SanDisk CompactFlash Card OEM Product Manual
Card (Drive) Address Register (con’t)
Bit
D7
D6
D5
D4
D3
D2
D1
D0
-nDS1
-nDS0
Name
-WTG
-HS3
-HS2
-HS1
-HS0
X
This bit is unknown.
Implementation Note:
Conflicts may occur on the host data bus when this bit is provided by a
Floppy Disk Controller operating at the same addresses as the
CompactFlash Memory Card. Following are some possible solutions to this
problem for the PCMCIA implementation:
1. Locate the CompactFlash Memory Card at a non-conflicting address,
i.e., Secondary address (377) or in an independently decoded Address
Space when a Floppy Disk Controller is located at primary addresses.
2. Do not install a Floppy and a CompactFlash Memory Card in the system
at the same time
3. Implement a socket adapter that can be programmed to (conditionally)
tri-state D7 of I/0 address 3F7/377 when a CompactFlash Memory Card is
installed and conversely to tri-state D6-D0 of I/O address 3F7/377 when a
floppy controller is installed
4. Do not use the card's Drive Address Register. This may be accomplished
by either a) If possible, program the host adapter to enable only I/O
addresses 1F0-1F7, 3F6 (or 170-177, 176) to the card or
b) if provided use an additional primary/secondary configuration in the card
that does not respond to accesses to I/O locations 3F7 and 377. With either
of these implementations, the host software must not attempt to use
information in the Drive Address Register.
This bit is 0 when a write operation is in progress, otherwise, it is 1.
This bit is the negation of bit 3 in the Drive/Head Register.
This bit is the negation of bit 2 in the Drive/Head Register.
This bit is the negation of bit 1 in the Drive/Head Register.
This bit is the negation of bit 0 in the Drive/Head Register.
This bit is 0 when drive 1 is active and selected.
This bit is 0 when the drive 0 is active and selected.
4-9
Description
ATA Register Set and Protocol
Rev. 12.0, 02/07
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