Datasheet

T
T
T
S
S
S
2
2
2
G
G
G
~
~
~
1
1
1
6
6
6
G
G
G
C
C
C
F
F
F
X
X
X
5
5
5
0
0
0
0
0
0
CFast Card
Transcend Information Inc.
V0.5
18
READ DMA (C8h)
Read data from sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify
the mode value. A sector count of zero requests 256 sectors.
READ MULTIPLE (C4h)
This command performs similarly to the Read Sectors command. Interrupts are not generated on each sector, but on
the transfer of a block which contains the number of sectors defined by a Set Multiple command.
READ SECTOR(S) (20h)
This command reads 1 to 256 sectors as specified in the Sector Count register from sectors which is set by Sector
number register. A sector count of 0 requests 256 sectors. The transfer beings specified in the Sector Number register.
READ VERIFY SECTOR(S) (40h/41h)
This command verifies one or more sectors on the drive by transferring data from the flash media to the data buffer in
the drive and verifying that the ECC is correct. This command is identical to the Read Sectors command, except that DRQ
is never set and no data is transferred to the host.
SET FEATURES (EFh)
This command set parameter to Features register and set drive’s operation. For transfer mode, parameter is set to
Sector Count register. This command is used by the host to establish or select certain features.
SET MULTIPLE MODE (C6h)
This command enables the device to perform READ MULTIPLE and WRITE MULTIPLE operations and establishes
the block count for these commands.
WRITE DMA (CAh)
Write data to sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify
the mode value.
WRITE MULTIPLE (C5h)
This command is similar to the Write Sectors command. Interrupts are not presented on each sector, but on the
transfer of a block which contains the number of sectors defined by Set Multiple command.
WRITE SECTOR(S) (30h)
Write data to a specified number of sectors (1 to 256, as specified with the Sector Count register) from the specified
address. Specify “00h” to write 256 sectors.
NOP (00h)
The device shall respond with command aborted. For devices implementing the Overlapped feature set, subcommand
code 00h in the Features register shall abort any outstanding queue. Subcommand codes 01h through FFh in the
Features register shall not affect the status of any outstanding queue.
READ BUFFER (E4h)
The READ BUFFER command enables the host to read a 512-byte block of data.
WRITE BUFFER (E8h)