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THNCFXXXBAI Datasheet(PDF) 23 Page - Toshiba Semiconductor

Part No. THNCFXXXBAI
Description  The THNCFxxxMBA/BAI series CompactFlash card is a flash technology based with ATA interface flash memory card.
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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THNCFXXXBAI Datasheet(HTML) 23 Page - Toshiba Semiconductor

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THNCFxxxMBA/BAI Series
2002-10-20
23/48
Preliminary
1. Data register
This register is a 16-bit register that has read/write ability, and it is used for transferring 1 sector data
between the card and the host. This register can be accessed in word mode and byte mode. This register
overlaps the Error or Feature register.
bit15
bit14
bit13
bit12
bit11
bit10
bit9
bit8
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
D0 to D15
2. Error register
This register is a read only register, and it is used for analyzing the error content at the card accessing. This
register is valid when the BSY bit in Status register and Alternate Status register are set to “0”(Ready).
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
BBK
UNC
0
IDNF
0
ABRT
0
AMNF
bit
Name
Function
7
BBK(Bad Block detected)
This bit is set when a Bad Block is detected in requester ID field.
6
UNC(Data ECC error)
This bit is set when Uncorrectable error is occurred at reading the card.
4
IDNF(ID Not Found)
The requested sector ID is in error or cannot be found.
2
ABRT(ABoRTed command)
This bit is set if the command has been aborted because of the card status
condition.(Not ready, Write fault, Invalid command, etc.)
0
AMNF(Address Mark Not Found)
This bit is set in case of a general error.
3. Feature register
This register is write-only register, and provides information regarding features of the drive that the host
wishes to utilize.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Feature byte
4. Sector count register
This register contains the numbers of sectors of data requested to be transferred on a read or write operation
between the host and the card. If the value of this register is zero, a count of 256 sectors is specified. In
plural sector transfer, if not successfully completed, the register contains the number of sectors, which need to
be transferred in order to complete, the request.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Sector count byte
5. Sector number register
This register contains the starting sector number, which is started by following sector transfer command.
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Sector number byte


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