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THNCF032MBA Datasheet(PDF) 23 Page - Toshiba Semiconductor |
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THNCF032MBA Datasheet(HTML) 23 Page - Toshiba Semiconductor |
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23 / 48 page  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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